Dell Precision 7920 Tower User Manual

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Dell Precision 7920 Tower

Owner's Manual

Reg ula tor y M ode l: D04 X Reg ula tor y T ype : D 04X 001 May 20 20 Rev . A 04

Notes, cautions, and warnings

NOTE: A NOTE indicates important information that helps you make better use of your product.

CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid

the problem.

WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

subsidiaries. Other trademarks may be trademarks of their respec tiv e o wne rs.

Contents

Chapter 1: Chassis.........................................................................................................................7

Front view..............................................................................................................................................................................7

Back view...............................................................................................................................................................................8

Internal view..........................................................................................................................................................................9

Major components of your system ............................................................................................................................... 12

Chapter 2: Working on your computer..........................................................................................14

Safety instructions.............................................................................................................................................................14

Turning off your computer — Windows.......................................................................................................................14

Before working inside your computer........................................................................................................................... 15

After working inside your computer.............................................................................................................................. 15

Chapter 3: Removing and installing components.......................................................................... 16

Screw size list..................................................................................................................................................................... 16

Recommended tools.......................................................................................................................................................... 17

Power supply unit (PSU)..................................................................................................................................................18

Removing the PSU.......................................................................................................................................................18

Installing the PSU.........................................................................................................................................................18

Side cover............................................................................................................................................................................ 18

Removing the side cover............................................................................................................................................ 18

Installing the side cover.............................................................................................................................................. 19

Air shroud............................................................................................................................................................................ 20

Removing the air shroud............................................................................................................................................20

Installing the air shroud fan assembly.................................................................................................................... 20

Removing the air shroud fan.................................................................................................................................... 20

Installing the air shroud fan.......................................................................................................................................22

Front bezel.......................................................................................................................................................................... 22

Removing the front bezel.......................................................................................................................................... 22

Installing the front bezel............................................................................................................................................ 23

PCIe holder......................................................................................................................................................................... 24

Removing PCIe card holder ..................................................................................................................................... 24

Installing the PCIe card holder................................................................................................................................. 25

Intrusion switch................................................................................................................................................................. 25

Removing the intrusion switch.................................................................................................................................25

Installing the intrusion switch................................................................................................................................... 27

Front system fan assembly............................................................................................................................................. 28

Removing the front system fan assembly............................................................................................................. 28

Installing the front system fan assembly................................................................................................................ 31

Internal chassis speaker....................................................................................................................................................31

Removing the internal chassis speaker...................................................................................................................31

Installing the internal chassis speaker.................................................................................................................... 32

Hard disk drive and the Optical disk drive bezel........................................................................................................33

Removing the HDD bezel...........................................................................................................................................33

Installing the HDD bezel............................................................................................................................................. 33

Contents 3

Hard disk drive assembly................................................................................................................................................. 34

Removing the HDD carrier........................................................................................................................................ 34

Installing the HDD carrier.......................................................................................................................................... 35

Removing the HDD..................................................................................................................................................... 35

Installing the HDD........................................................................................................................................................36

NVMe Flexbay.................................................................................................................................................................... 37

Removing the NVMe Flexbay................................................................................................................................... 37

Installing the NVMe flexbay....................................................................................................................................... 41

Front input and output bezel..........................................................................................................................................43

Removing the front input and output bezel..........................................................................................................43

Installing the front input and output bezel............................................................................................................45

Front input and output panel..........................................................................................................................................45

Removing the front input and output panel..........................................................................................................45

Installing the front input and output panel............................................................................................................48

Removing the input and output panel bracket.....................................................................................................49

Installing the input and output panel...................................................................................................................... 50

Rear system fan.................................................................................................................................................................50

Removing the rear system fan.................................................................................................................................50

Installing the rear system fan................................................................................................................................... 52

Right side cover.................................................................................................................................................................52

Removing the right side cover................................................................................................................................. 52

Installing the right side cover................................................................................................................................... 52

Hard disk drive and optical disk drive frame...............................................................................................................53

Removing the HDD and ODD frame....................................................................................................................... 53

Installing the HDD and ODD frame..........................................................................................................................56

Slim Optical Disk Drive..................................................................................................................................................... 56

Removing the slim ODD and ODD latch.................................................................................................................56

Installing the slim ODD and ODD latch...................................................................................................................58

5.25-inch optical drive..................................................................................................................................................... 59

Removing the 5.25-inch optical drive.................................................................................................................... 59

Installing the 5.25-inch optical drive...................................................................................................................... 60

Power distribution and fan control board.................................................................................................................... 61

Removing the power distribution and fan control board.................................................................................... 61

Installing the power distribution and fan control board..................................................................................... 62

Front HDD cable and fan assembly...............................................................................................................................63

Removing the front HDD cable and fan assembly...............................................................................................63

Installing the front HDD cable and fan assembly.................................................................................................64

Fan and sensor cable assembly................................................................................................................................ 64

Fan bracket......................................................................................................................................................................... 69

Removing the fan from the fan bracket................................................................................................................ 69

Installing the fan into the fan bracket.................................................................................................................... 70

Graphical processing unit(GPU)..................................................................................................................................... 71

Removing the GPU...................................................................................................................................................... 71

Installing the GPU........................................................................................................................................................72

Memory................................................................................................................................................................................72

Removing the memory module................................................................................................................................. 72

Installing the memory module................................................................................................................................... 73

Coin cell battery................................................................................................................................................................. 73

Removing the coin cell battery.................................................................................................................................73

Processor heat sink module............................................................................................................................................ 74

Contents

Removing the processor heat sink module............................................................................................................74

Installing the processor heat sink module..............................................................................................................75

Removing the CPU......................................................................................................................................................76

Installing the CPU........................................................................................................................................................ 77

System board..................................................................................................................................................................... 80

System board components....................................................................................................................................... 80

Removing system board............................................................................................................................................. 81

Installing the system board....................................................................................................................................... 84

RAID controller battery.................................................................................................................................................... 85

Removing the RAID controller battery................................................................................................................... 85

Installing the RAID controller battery......................................................................................................................87

RAID controller battery bracket.....................................................................................................................................87

Removing the RAID controller battery bracket.................................................................................................... 87

Installing the RAID controller battery bracket......................................................................................................88

VROC module..................................................................................................................................................................... 88

Removing the VROC module.................................................................................................................................... 88

Installing the VROC module...................................................................................................................................... 89

Chapter 4: Technology and components...................................................................................... 90

Memory configuration...................................................................................................................................................... 90

Technologies list................................................................................................................................................................. 91

MegaRAID 9440-8i and 9460-16i controller............................................................................................................... 92

Teradici PCoIP................................................................................................................................................................... 94

Chapter 5: System specifications................................................................................................ 98

System specifications.......................................................................................................................................................98

Memory specifications ....................................................................................................................................................98

Video specifications.......................................................................................................................................................... 99

Audio specifications.......................................................................................................................................................... 99

Network specifications...................................................................................................................................................100

Card Slots..........................................................................................................................................................................100

Storage specifications.................................................................................................................................................... 100

External connectors........................................................................................................................................................100

Power specifications........................................................................................................................................................101

Physical specifications.................................................................................................................................................... 101

Environmental specifications.........................................................................................................................................101

CPU utilization matrix for AEP DIMM.........................................................................................................................102

Chapter 6: System Setup........................................................................................................... 103

General options................................................................................................................................................................ 103

System configuration......................................................................................................................................................104

Video................................................................................................................................................................................... 106

Security.............................................................................................................................................................................. 106

Secure boot....................................................................................................................................................................... 107

Performance..................................................................................................................................................................... 108

Power management........................................................................................................................................................ 109

POST behavior.................................................................................................................................................................. 110

Virtualization support...................................................................................................................................................... 110

Maintenance...................................................................................................................................................................... 110

Contents

System logs........................................................................................................................................................................110

Engineering configurations..............................................................................................................................................111

Updating the BIOS in Windows .................................................................................................................................... 111

Updating BIOS on systems with BitLocker enabled............................................................................................111

Updating your system BIOS using a USB flash drive.........................................................................................112

Updating the Dell BIOS in Linux and Ubuntu environments.............................................................................112

Flashing the BIOS from the F12 One-Time boot menu......................................................................................112

MegaRAID controller options.........................................................................................................................................115

System and setup password..........................................................................................................................................116

Assigning a system setup password...................................................................................................................... 116

Deleting or changing an existing system setup password................................................................................ 116

Chapter 7: Software................................................................................................................... 118

Supported operating systems........................................................................................................................................118

Downloading drivers.........................................................................................................................................................118

Chipset driver.................................................................................................................................................................... 119

Graphics controller driver............................................................................................................................................... 119

USB drivers........................................................................................................................................................................ 119

Network drivers............................................................................................................................................................... 120

Audio drivers..................................................................................................................................................................... 120

Ports................................................................................................................................................................................... 120

Storage controller drivers.............................................................................................................................................. 120

Other drivers......................................................................................................................................................................121

Chapter 8: Troubleshooting........................................................................................................122

Dell Enhanced Pre-Boot System Assessment — ePSA Diagnostic 3.0............................................................. 122

Running the ePSA Diagnostics............................................................................................................................... 122

Testing memory using ePSA................................................................................................................................... 122

Preboot blinking power button codes................................................................................................................... 123

Hard drive indicator codes............................................................................................................................................ 126

Chapter 9: Contacting Dell......................................................................................................... 128

Contents

Chassis

This chapter illustrates the multiple chassis views along with the ports and connectors and also explains the FN hot key combinations.

Topics:

• Front view

• Back view

• Internal view

• Major components of your system

Front view

1. Power button/Power light 2. HDD Activity LED

3. SD card slot 4. USB 3.1 Gen 1 ports

5. USB 3.1 Gen 1 Type-C port with PowerShare 6. USB 3.1 Gen 1 Type-C port

7. Universal audio jack 8. Front bezel release latch

9. 5.25" ODD Bay 10. Slimline optical bay

Chassis 7

Back view

1. Power supply unit 2. Line-out port

3. Microphone/Line-in port 4. Serial port

5. PS/2 Mouse port 6. PSU BIST LED

7. PS/2 Keyboard port 8. Network Port (AMT Enabled - Optional)

9. Network Port 10. USB 3.1 Gen 1 ports

11. USB 3.1 Gen 1 Type-C port with PowerShare 12. Mechanical expansion slot

13. PCIe expansion slots 14. Side cover release latch

15. PCIe expansion slots (CPU1 required)

8 Chassis

Internal view

1. System board 2. CPU and Memory Air shroud

3. Intrusion switch 4. Front system fan assembly

5. Front Bezel lock/unlock button 6. Auxiliary PCIe power cables

7. Powered graphical processing unit (GPU) 8. PCIe release latches

9. Rear HDD Bezel lock/unlock button 10. Rear Fans

Chassis 9

1. CPU1 socket 2. CPU0 Heatsink

3. PCIe holder 4. CPU0 Memory Slots

5. CPU0 Memory Slots 6. Coin cell battery

7. Half length PCIe graphics card 8. CPU1 Memory Slots

9. CPU1 Memory Slots

10 Chassis

1. Flex 2 (default is 5.25" and Slim ODD Bay) 2. Data cable and power cable for the Slim ODD

3. HDD fan bracket 1 4. Intrusion switch

5. Power distribution and fan control board 6. PSU

7. Flex 3 (optional) 8. Flex 4 (optional)

9. HDD fan bracket 0 10. Flex 1 enclosure

11. Flex 0 enclosure

Chassis 11

Major components of your system

This section illustrates the major components of your system along with its location.

1. Side cover

2. Air shroud

3. PCIe holder

4. Front system fan assembly

5. Slim Optical Disk Drive

6. Memory bracket

7. 5.25 inch Optical Disk Drive

8. NVMe Flexbay

9. Front input and output panel

10. Front bezel

11. Front input and output bezel

12. Hard disk drive and optical disk drive frame

13. Hard Disk Drive bezel

14. Backpane and Drop cables

15. Right side cover

16. Computer chassis

17. System board

18. Expansion card

19. Memory

20. Processor

21. CPU locking clip

Chassis

22. Processor heat sink module

23. Front System fan

24. System fan

25. Power Distribution Board

26. Power supply unit (PSU)

NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These

parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for

purchase options.

Chassis 13

Working on your computer

Topics:

• Safety instructions

• Turning off your computer — Windows

• Before working inside your computer

• After working inside your computer

Safety instructions

Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that the following conditions exist:

● You have read the safety information that shipped with your computer.

● A component can be replaced or, if purchased separately, installed by performing the removal procedure in reverse order.

NOTE: Disconnect all power sources before opening the computer cover or panels. After you finish working inside the

computer, replace all covers, panels, and screws before connecting to the power source.

WARNING: Before working inside your computer, read the safety information that shipped with your computer.

For additional safety best practices information, see the Regulatory Compliance Homepage

CAUTION: Many repairs may only be done by a certified service technician. You should only perform

troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or

telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by

your warranty. Read and follow the safety instructions that came with the product.

CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically

touching an unpainted metal surface at the same time as touching a connector on the back of the computer.

CAUTION: Handle components and cards with care. Do not touch the components or contacts on a card. Hold a

card by its edges or by its metal mounting bracket. Hold a component such as a processor by its edges, not by

its pins.

CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab, not on the cable itself. Some

cables have connectors with locking tabs; if you are disconnecting this type of cable, press in on the locking

tabs before you disconnect the cable. As you pull connectors apart, keep them evenly aligned to avoid bending

any connector pins. Also, before you connect a cable, ensure that both connectors are correctly oriented and

aligned.

NOTE: The color of your computer and certain components may appear differently than shown in this document.

CAUTION: System will shut down if side covers are removed while the system is running. The system will not

power on if the side cover is removed.

Turning off your computer — Windows

CAUTION:

computer or remove the side cover.

1. Click or tap .

14 Working on your computer

To avoid losing data, save and close all open files and exit all open programs before you turn off your

2. Click or tap and then click or tap Shut down.

NOTE: Ensure that the computer and all attached devices are turned off. If your computer and attached devices did not

automatically turn off when you shut down your operating system, press and hold the power button for about 6 seconds

to turn them off.

Before working inside your computer

To avoid damaging your computer, perform the following steps before you begin working inside the computer.

1. Ensure that you follow the Safety Instruction.

2. Ensure that your work surface is flat and clean to prevent the computer cover from being scratched.

3. Turn off your computer.

4. Disconnect all network cables from the computer.

CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the

cable from the network device.

5. Disconnect your computer and all attached devices from their electrical outlets.

6. Press and hold the power button while the computer is unplugged to ground the system board.

NOTE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an

unpainted metal surface at the same time as touching a connector on the back of the computer.

After working inside your computer

After you complete any replacement procedure, ensure that you connect any external devices, cards, and cables before turning on your computer.

1. Connect any telephone or network cables to your computer.

CAUTION:

computer.

2. Connect your computer and all attached devices to their electrical outlets.

3. Turn on your computer.

4. If required, verify that the computer works correctly by running ePSA diagnostics.

To connect a network cable, first plug the cable into the network device and then plug it into the

Working on your computer

Removing and installing components

Topics:

• Screw size list

• Recommended tools

• Power supply unit (PSU)

• Side cover

• Air shroud

• Front bezel

• PCIe holder

• Intrusion switch

• Front system fan assembly

• Internal chassis speaker

• Hard disk drive and the Optical disk drive bezel

• Hard disk drive assembly

• NVMe Flexbay

• Front input and output bezel

• Front input and output panel

• Rear system fan

• Right side cover

• Hard disk drive and optical disk drive frame

• Slim Optical Disk Drive

• 5.25-inch optical drive

• Power distribution and fan control board

• Front HDD cable and fan assembly

• Fan bracket

• Graphical processing unit(GPU)

• Memory

• Coin cell battery

• Processor heat sink module

• System board

• RAID controller battery

• RAID controller battery bracket

• VROC module

Screw size list

Table 1. Screw list

Component Screw Type Quantity

PSU extended card #6-32X1/4 inches 3

FIO board #6-32X1/4 inches 2

Slim ODD cable for blind mate M3X5.0mm 2

Slim ODD cable for blind mate with ODD bracket

FIO bracket #6-32X1/4 inches 1

Right Side Cover #6-32 UNC X7.0mm 2

16 Removing and installing components

#6-32 UNC X5.45mm 1

Table 1. Screw list (continued)

Component Screw Type Quantity

Up-Bottom air shroud M3X5.0mm 3

Down-Bottom air shroud M3X5.0mm 2

Motherboard #6-32X1/4 inches 12

Front Fan Bracket-MB tray #6-32X1/4 inches 2

Front Fan Bracket-Front wall #6-32X1/4 inches 2

Intruder holder #6-32X1/4 inches 1

Rear Fan bracket #6-32X1/4 inches 2

Rear HDD cover #6-32 UNC X7.0mm 2

Flex0 HDD bay bracket #6-32 UNC X5.45mm 4

Flex0 6025fan bracket for cable attached

Flex0 6025fan bracket for hot plug #6-32 UNC X5.45mm 2

Flex0 and Flex1 HH ODD bracket #6-32 UNC X5.45mm 4

Flex1 HDD bay bracket #6-32 UNC X5.45mm 4

Flex1 6025fan bracket for cable attached #6-32 UNC X5.45mm 2

Flex1 6025fan bracket for hot plug #6-32 UNC X5.45mm 2

Flex2 HDD bay bracket #6-32 UNC X5.45mm 4

Flex2 6025fan bracket for cable attached

Flex3 HDD bracket #6-32 UNC X5.45mm 4

Flex3 6025fan bracket for cable attached

Flex4 HDD bracket #6-32 UNC X5.45mm 4

Flex4 6025fan bracket for cable attached

HH ODD holder M3X5.0mm 4

HSBP board #6-32 UNC X5.45mm 3

#6-32 UNC X5.45mm 2

CPU0 cooler/CPU0 Liquid Cooler T-30 torx bolt 4

CPU1 cooler/CPU1 Liquid Cooler T-30 torx bolt 4

Liquid Cooler Bracket #6-32 UNC X5.45mm 12

Recommended tools

The procedures in this document require the following tools:

● Phillips #0 screwdriver

● Phillips #1 screwdriver

● Philips #2 screwdriver

● Plastic scribe

● T-30 torx screwdriver

NOTE: The #0 screw driver is for screws 0-1 and the #1 screw driver is for screws 2-4.

Removing and installing components 17

Power supply unit (PSU)

Removing the PSU

1. Follow the procedure in Before working inside your computer.

2. Disconnect the power cable from the system.

3. Press the PSU release latch [1] and slide the power supply away from the system [2].

NOTE: If the PSU cannot be removed then remove the right side cover of the system and check if the PSU is secured

with a screw.

Installing the PSU

1. Slide in the power supply unit to the PSU slot on the system.

2. Connect the power cable to the system.

3. Follow the procedure in After working inside your computer

Side cover

Removing the side cover

1. Follow the procedure in Before working inside your computer.

CAUTION:

side cover is removed while the system is on.

2. To remove the side cover:

3. Press the latch

Removing and installing components

The system will not power on while the side cover is off. Also, the system will shut down if the

4. Pull the latch [1] upward and rotate it to release the cover [2].

5. Lift the cover to remove it from the system.

Installing the side cover

1. First hold and align the bottom of the side cover to the chassis.

2. Ensure that the hook on the bottom of the side cover snaps into the notch on the system.

3. Press the system cover until it clicks into place.

Removing and installing components

CAUTION: The system will not power on without the side cover. Also, the system will shut down if the side

cover is removed while the system is on.

4. Follow the procedure in After working inside your computer .

Air shroud

Removing the air shroud

1. Follow the procedure in Before working inside your computer.

2. Remove the side cover.

3. To remove the air shroud Fan assembly:

a. Disconnect the fan connector cable from the system board [1]. b. Lift the shroud away from the system [2].

Installing the air shroud fan assembly

1. Place the shroud into its position and ensure that the tab fits into the system.

2. Press down the shroud until it locks with a click.

3. Reconnect the fan connector cable to the system board.

4. Install the side cover.

5. Follow the procedure in After working inside your computer.

Removing the air shroud fan

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a. side cover

Removing and installing components

b. removing air shroud (Top)

3. Flip-over the shroud to see the fan.

4. To remove the fan, release the fan connector cable from the latches [1] and [2].

5. Remove the screws that secures the fan to the air shroud [1], and lift the fan away from the air shroud [2].

NOTE: The shroud will need to be flexed open slightly in order to be removed.

Removing and installing components 21

Installing the air shroud fan

1. Place the fan into its position inside the air shroud .

2. Replace the screws that secure the fan to the air shroud.

3. Route back the fan connector cable through the latches on the air shroud and flip over.

4. Install the:

a. air shroud (top) b. side cover

5. Follow the procedure in After working inside your computer.

Front bezel

Removing the front bezel

1. Follow the procedure in Before working inside your computer.

2. Remove the side cover.

3. To remove the front bezel:

a. Press the latch and pry the retention tabs to release the front bezel from the system.

Removing and installing components

b. Rotate the bezel forward and lift the front bezel away from the system.

Installing the front bezel

1. Hold the bezel and ensure that the hooks on the bezel snap into the notches on the system.

2. Rotate the bezel forward and press the front bezel until the tabs click into place.

3. Follow the procedure in After working inside your computer.

Removing and installing components

PCIe holder

Removing PCIe card holder

1. Follow the procedure in Before working inside your computer.

2. Remove the following:

a. side cover b. air shroud

3. To remove the PCIe card holder:

NOTE: If full length cards are installed, you will need to remove these cards before removing the holder.

NOTE: If MegaRAID 9460 is installed, disconnect the Super CAP from the card before removing the PCIe card holder

from the system.

a. Disconnect the power cables on either side of the card holder by pressing the tab and pulling it out of the cable slot in

the PCIe holder [1] and [2].

b. Release the dual cables passing through the clip on the card holder [3].

4. Release the latches connecting the front system fan assembly, and lift the PCIe card holder away from the chassis.

Removing and installing components

Installing the PCIe card holder

1. Align the PCIe card holder to the slot in front of the system fan assembly, and press down until it clicks in place.

2. Route the dual cables back through the clip on the PCIe card holder.

3. Connect the power cables on either side to the cable slots in the PCIe card holder.

4. Reinstall the full length cards if they were removed.

5. If the MegaRAID 9460 was removed, please connect the Super CAP back to the card.

6. Install the:

a. air shroud b. side cover

7. Follow the procedure in After working inside your computer.

Intrusion switch

Removing the intrusion switch

1. Follow procedure in Before working inside your computer.

2. Remove the right side cover.

3. To remove the intrusion switch that is located at the bottom of the system board:

NOTE: The system will not power on when the intrusion switch is uninstalled.

a. Press the knob of the intrusion switch toward the bottom of the chassis [1, 2]. b. Pull the intrusion switch down to remove it from the slot [3].

Removing and installing components

4. Install the right side cover

5. Flip the system back with the system cover facing up where the release latch is available.

6. Remove the following components :

a. side cover b. air shroud c. PCIe card holder

7. To remove the intrusion switch module:

a. Pull the bottom intrusion switch cable up toward the chassis [1]. b. Press the tab to disconnect the intrusion switch cable from the system board [2]. c. Unroute the intrusion switch cables from the clip on the chassis [3]. d. Remove the screw on the intrusion module [4]. e. Lift the intrusion module from the front system fan assembly [5].

Removing and installing components

Installing the intrusion switch

1. Place the intrusion switch module into the slot in the front system fan assembly.

2. To secure the intrusion switch module to the front system fan chassis, replace the single screw on the module.

3. Route the intrusion switch cables through the clip on the chassis.

4. Connect the intrusion switch cable to the system board.

5. Push the bottom intrusion switch cable down toward the bottom chassis.

6. Replace the following components:

a. PCIe graphics card holder b. air shroud c. side cover

7. Remove the right side cover.

8. Pull the intrusion switch cable up from the top chassis.

9. Insert and slide the intrusion switch into the slot in the chassis to secure it.

10. Follow the procedure in After working inside your computer.

Removing and installing components

Front system fan assembly

Removing the front system fan assembly

1. Follow the procedure in Before working inside your computer.

2. Remove the following:

a. side cover b. front bezel c. air shroud d. PCIe card holder

3. To remove the system fan assembly:

a. Remove the single screw on the intrusion switch module [1], and lift it away from the system fan chassis [2]. b. Disconnect the internal chassis speaker cable from the connector, unroute it from the clip on the system fan chassis [3],

and lift it away from chassis [4].

4. Disconnect the four system fan cables from the connectors on the system board.

CAUTION:

connector end. Pulling the cable wires may loosen them from the connector.

28 Removing and installing components

Do not pull the connector by the cable wires. Instead, disconnect the cable by pulling on the

5. Remove the two screws securing the fan chassis to the system [1], and the two screws securing the fan chassis in front of the system [2].

Removing and installing components

6. Rotate and lift the fan assembly away from the system.

Removing and installing components

Installing the front system fan assembly

1. Hold the system fan by the sides with the cable end facing the bottom of the chassis.

2. Replace the two screws securing the system fan assembly in front of the system.

3. Replace the two screws securing the system fan assembly in the system.

4. Connect the four system fan cables to the system board.

5. Route back the internal chassis speaker cable through the clip on the system fan assembly, and connect the internal chassis speaker to the connector.

6. Replace the intrusion switch module to the slot on the fan assembly and insert the screw to secure it with the system fan assembly.

7. Install the following components:

a. PCIe graphics card holder b. air shroud c. front bezel d. side cover

8. Follow the procedure in After working inside your computer.

Internal chassis speaker

Removing the internal chassis speaker

1. Follow the procedure in Before working inside your computer.

2. Remove the following:

Removing and installing components

a. side cover b. front bezel

3. To remove the internal chassis speaker:

a. Disconnect one end of the internal chassis speaker cable from the connector on the system fan assembly [1]. b. Unroute the internal chassis speaker cable from the clip on the system fan assembly.

4. Press and hold the tabs [2] on either side of the internal chassis speaker, to slide and remove it out of the system [3].

Installing the internal chassis speaker

1. Press and hold the tabs on either side of the internal chassis speaker, and slide the speaker module into the slot to secure it to the system.

2. Route the internal chassis speaker cable through the clip on the system fan assembly.

3. Connect the one end of the internal chassis speaker cable to the connector on the system fan assembly.

4. Install the following components:

a. air shroud b. front bezel c. side cover

5. Follow the procedure in After working inside your computer

Removing and installing components

Hard disk drive and the Optical disk drive bezel

Removing the HDD bezel

1. Follow the procedure in Before working inside your computer.

2. Remove the following components:

a. side cover b. front bezel

3. To remove the HDD bezel:

a. Press the blue unlock button [1], which is located near the front system fan assembly. b. Slide the latch [2] on the front I/O bezel, to release the HDD bezel from the chassis [3].

c. Rotate and lift the HDD bezel out from the chassis [3].

4. Optional: Remove the ODD bezel from the chassis by prying the edges of the bezel and lift it away.

Installing the HDD bezel

1. If the ODD bezel is removed, install it by aligning the notch of the bezel into the slot on the chassis (Optional).

2. Align the HDD bezel onto its slots on the chassis and press the HDD bezel towards the chassis.

3. Press the blue lock button located near the front system fan assembly, to secure the HDD bezel to the chassis.

4. Install the following components:

a. front bezel b. side cover

5. Follow the procedure in After working inside your computer

Removing and installing components

Hard disk drive assembly

Removing the HDD carrier

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a. side cover

NOTE: Do not remove the side cover, if the front I/O bezel is unlocked.

b. HDD bezel

NOTE: Remove only the HDD bezel.

3. To remove the HDD carrier:

a. Press the release button [1] to unlock the latch [2].

b. Pull the latch to slide the carrier out of the HDD slot.

Removing and installing components

Installing the HDD carrier

1. Slide the carrier into the drive bay until it clicks into place.

CAUTION: Ensure that the latch is open before installing the carrier.

2. Lock the latch.

3. Install the following components:

a. HDD bezel b. side cover

4. Follow the procedure in After working inside your computer.

Removing the HDD

1. Follow the procedure in Before working inside your computer.

2. Remove the following:

a. side cover b. HDD bezel c. HDD carrier

3. To remove the 3.5 inch HDD:

a. Expand one side of the carrier.

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b. Lift the hard drive out of the carrier.

Installing the HDD

1. Insert the HDD to its slot in the HDD bracket with the connector end of the hard drive towards the back of the HDD carrier.

2. Slide the HDD carrier back into the hard drive bay.

3. Install the following:

a. HDD carrier

Removing and installing components

b. HDD bezel c. side cover

4. Follow the procedure in After working inside your computer

NVMe Flexbay

Removing the NVMe Flexbay

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a. side cover

NOTE: Do not remove the side cover, if the front I/O bezel is unlocked.

b. HDD bezel

NOTE: Remove only the HDD bezel.

3. To remove the NVMe flexbay:

a. Press the release button [1] to unlock the latch [2].

b. Pull the latch to slide the carrier out of the HDD slot.

Removing and installing components

4. To remove the SSD carrier from the NVMe flexbay:

a. Press the release button to slide the M.2 SSD carrier out of the NVMe flexbay.

b. Pull the M.2 SSD carrier out of the NVMe flexbay.

Removing and installing components

5. To remove the SSD from the SSD carrier:

a. Remove the screws on either side of the SSD.

b. Remove the screw from the top of the SSD carrier.

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c. Slide the SSD cover from the top of the carrier.

d. Slide the SSD out of the M.2 slot on the carrier.

Removing and installing components

Installing the NVMe flexbay

1. To install the SSD in the carrier:

a. Remove the dummy SSD blank from the SSD carrier.

b. Peel off the tape from the SSD carrier.

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c. Peel off the adhesive tape from the SSD carrier cover.

2. Install the SSD in the carrier

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3. Replac the two side screws and the central screw.

4. To install the SSD carrier slide the carrier in the NVMe flexbay until it clicks in place.

5. Slide the carrier into the drive bay until it clicks into place.

CAUTION: Ensure that the latch is open before installing the carrier.

6. Lock the latch.

7. Install the following components:

a. HDD bezel b. side cover

8. Follow the procedure in After working inside your computer.

Front input and output bezel

Removing the front input and output bezel

1. Follow the procedure in Before working inside the computer.

2. Remove the:

a. side cover b. front bezel c. HDD and ODD bezel

3. To remove the front Input/Output (I/O) bezel, pry the edges of the panel [1].

Removing and installing components

4. Slightly slide the panel, and lift it away from the chassis.

Removing and installing components

Installing the front input and output bezel

1. Align and press the bezel toward the front chassis on the system.

2. Install the:

a. HDD and ODD bezel b. front bezel c. side cover

3. Follow the procedure in After working inside your computer

Front input and output panel

Removing the front input and output panel

1. Follow the procedure in Before working inside your computer.

2. Remove the following:

a. side cover b. air shroud c. front bezel d. PCIe holder e. front system fan f. HDD and ODD bezel

Removing and installing components

g. input and output bezel

3. To remove the front Input/Output (I/O) panel:

a. Disconnect the following cables from the connectors on the I/O panel.

● Front panel cable [1]

● Front USB 3.1 cable [2]

● Front USB 3.1 cable [3]

● Front panel audio cable [4]

b. Remove the single screw that secures the I/O panel to the chassis.

Removing and installing components

4. Slide the I/O panel toward the left of the system to release it, and then remove the I/O panel out of the system.

Removing and installing components

Installing the front input and output panel

1. Insert the I/O panel into the slot on the front of the chassis.

2. Slide the I/O panel toward the right of the system to secure it to the chassis.

3. Replace the screw to secure the I/O panel to the chassis.

4. Connect the following cables to the connectors on the I/O panel:

● Front panel cable

● Front USB 3.1 cable

● Front panel audio cable

NOTE: The color of the cable matches the color of the connector.

5. Install the following:

a. input and output bezel b. HDD and ODD bezel c. front system fan d. PCIe holder e. front bezel

Removing and installing components

f. air shroud g. side cover

6. Follow the procedure in After working inside your computer

Removing the input and output panel bracket

1. Follow the procedure in Before working inside your computer.

2. Remove the following:

a. side cover b. air shroud c. front bezel d. PCIe holder e. front system fan f. HDD and ODD bezel g. input and output bezel h. input and output panel

3. To remove the Input/Output (I/O) panel bracket:

a. Remove the two screws that secure the I/O panel to the bracket.

b. Release and remove the I/O panel out of the bracket.

Removing and installing components

Installing the input and output panel

1. Insert the Input/Output (I/O) panel into the metal bracket.

2. Replace the two screws to secure the I/O panel to the I/O bracket.

3. Install the:

a. input and output panel b. input and output bezel c. HDD bezel d. front system fan e. PCIe holder f. front bezel g. air shroud h. side cover

4. Follow the procedure in After working inside your computer

Rear system fan

Removing the rear system fan

1. Follow the procedure in Before working inside your computer.

2. Remove the following:

a. side cover b. air shroud

3. To remove the rear system fan assembly:

a. Remove the two screws [1], and press the tab [2] to rotate the rear system fan into the chassis and remove it from

holder.

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b. Disconnect the system fan cables from the system board [1, 2].

CAUTION:

connector end. Pulling on the cable wires may loosen them from the connector.

Do not pull the connector by the cable wires. Instead, disconnect the cable by pulling on the

4. Lift the system fan assembly from the system.

Removing and installing components

Installing the rear system fan

1. Hold the rear system fan by the sides with the cable end facing the bottom of the chassis.

2. Connect the two system fan cables to the system board.

3. Replace the two screws to secure the fan with the chassis.

4. Install the:

a. air shroud b. side cover

5. Follow the procedure in After working inside your computer.

Right side cover

Removing the right side cover

1. Follow the procedure in Before working inside your computer.

2. Place the system chassis on the side with the right side cover facing upward.

3. Remove the two screws [1], that secure the right side cover to the chassis.

4. Slide the side cover back with the handle, and then lift it away from the system [2].

Installing the right side cover

1. Slide the cover forward and ensure that the hooks on the cover snap into the notches on the system.

2. Replace the two screws that secure the right side of the cover to the chassis.

3. Follow the procedure in After working inside your computer.

Removing and installing components

Hard disk drive and optical disk drive frame

Removing the HDD and ODD frame

1. Follow the procedure in Before working inside the computer.

2. Remove the:

a. side cover b. front bezel c. HDD and ODD bezel d. front i/o bezel

3. To remove the front HDD and ODD frame, gently pry on the latches of the frame.

4. Slightly pull the panel, and lift it away from the chassis.

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5. Flip the frame.

6. Gently press the release tab on the plastic filler and lift it out of the frame.

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7. Holding the blue tag, gently pull the optical drive metal filler out of the slot.

Removing and installing components

Installing the HDD and ODD frame

1. Install the plastic filler and metal blank if the optical drive is not installed.

2. Align and place the HDD and ODD frame on the system.

3. Gently press down on the frame to secure it to the system.

4. Install the:

a. front I/O bezel b. HDD and ODD bezel c. front bezel d. side cover

5. Follow the procedure in After working inside your computer.

Slim Optical Disk Drive

Removing the slim ODD and ODD latch

1. Follow the procedure in Before working inside the computer.

2. Remove the right side cover

3. To remove the ODD:

a. Disconnect the data cable and power cable [1] from the optical drive connector. b. Slide the blue latch towards the left of the chassis, and push the drive forward [2].

Removing and installing components

4. Remove the ODD out of the drive bay.

5. To remove the ODD bracket from the ODD drive:

a. Push the optical drive latch inwards so that the latch disconnects from the optical drive.

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b. Remove the latch from the optical drive.

Installing the slim ODD and ODD latch

1. Place the ODD latch into its position on the ODD drive and lock it.

2. Slide the optical drive into the drive bay from the front of the system until it fits in to place.

3. Connect the data cable and power cable to the connectors on the optical drive.

4. Install the right side cover

5. Follow the procedure in After working inside your computer

Removing and installing components

5.25-inch optical drive

Removing the 5.25-inch optical drive

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a. side cover

3. To remove the 5.25-inch optical drive:

a. Disconnect the power cable and the SATA cable from the optical drive.

b. Push down on the release latch [1]. c. Slide the optical drive out of the system [2].

Removing and installing components

Installing the 5.25-inch optical drive

1. Remove the:

a. side cover b. front bezel c. HDD and optical drive bezel d. front I/O bezel e. HDD and optical drive frame

2. Align the screw holes on the bracket with the holes on the optical drive.

3. Install the four screws that secure the plastic optical drive bracket to the optical drive.

Removing and installing components

4. Slide the optical drive into the slot, until it locks into place.

5. Connect the power cable and the SATA cable to the optical drive.

6. Install the:

a. HDD and optical drive frame b. front I/O bezel c. HDD and optical drive bezel d. front bezel e. side cover

7. Follow the procedure in After working inside your computer.

Power distribution and fan control board

Removing the power distribution and fan control board

1. Follow the procedure in Before working inside the computer.

2. Remove the:

a. PSU b. right side cover

3. To remove the power distribution and fan control board:

a. Press the tab on both sides of the connector and disconnect the power cable on the control board [1]. b. Disconnect the fan cables from the connectors on the control board [2]. c. Disconnect the power, PDB, and power VGA cables from the connectors on the control board [3].

Removing and installing components

4. Remove the three screws that secure the control board to the chassis [1, 2]. Lift the control board away from the chassis.

Installing the power distribution and fan control board

1. Replace the control board into its slot on the chassis and secure it with the three screws to the chassis.

2. Connect the two power cables, fan cables, PDB, power VGA cables, to the connectors on the control board.

3. Install the:

a. right side cover

Removing and installing components

b. PSU

4. Follow the procedure in After working inside your computer

Front HDD cable and fan assembly

Removing the front HDD cable and fan assembly

1. Follow the procedure in Before working inside the computer.

2. Remove the right side cover

3. To remove the front HDD cable and fan assembly:

a. Remove the four screws securing both the fan brackets to the chassis [1]. b. Press the tabs of the connector to disconnect the SATA 0 cable from the connector on the system board [2]. c. Press the tabs to disconnect the power cable and remove it from the plug [3]. d. Disconnect the fan cables from the connectors on the power distribution and fan control board [4].

CAUTION: Do not pull the connector by the cable wires. Instead, disconnect the cable by pulling on the

connector end. Pulling on the cable wires may loosen them from the connector.

4. Remove the HDD fan and cable assembly from the chassis.

Removing and installing components

Installing the front HDD cable and fan assembly

1. Connect the fan cables to the connectors on the power distribution and fan control board.

2. Connect the power cable to the connector on the power distribution and fan control board.

3. Connect the SATA 0 cable to the connector on the system board.

4. Replace the front HDD cable and fan assembly into their slots on the chassis and secure them with screws to the chassis.

5. Install the right side cover

6. Follow the procedure in After working inside your computer

Fan and sensor cable assembly

Precision 7920 Tower may have as many as 12 system fans connected to the system board. It is important for technicians to connect these fans to it's assigned connectors on the system board.

Removing and installing components

Figure 1. Mandatory System Fan

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Figure 2. HDD Fans

NOTE: Availability of these fans are dependent on configuration ordered.

Table 2. Fan and Cable Description

Fan Cable Description Silk Screen Fan Installation Guide

CPU 1 Fan CPU 1 fan cable FAN_CPU1 Mandatory

Front System Fans

Rear System Fans

HDD Fans Fan in Flex0 FAN_FLEX0 Depend on shipped configuration

66 Removing and installing components

Fan0 cable FAN_SYS0 Mandatory

Fan1 cable FAN_SYS1 Mandatory

Fan2 cable FAN_SYS2 Mandatory

Fan3 cable FAN_SYS3 Mandatory

Fan0 cable FAN_REAR0 Mandatory

Fan1 cable FAN_REAR1 Mandatory

Fan in Flex1 FAN_FLEX1

Fan in Flex2 FAN_FLEX2

Fan in Flex3 FAN_FLEX3

Fan in Flex4 FAN_FLEX4

Mandatory System Fan

Removing and installing components 67

68 Removing and installing components

NOTE: When HDD# FAN is installed, the HDD fans can be verified in the system setup and individually activated. But when

the HDD# FAN is removed, it needs to manually unchecked in the system setup.

Verify system fan functionality

Onsite Technicians are encouraged to run ePSA after the service is completed to verify if all the fans are detected and working.

Fan bracket

Removing the fan from the fan bracket

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a. side cover b. system fan

3. To remove the fan from the fan bracket:

a. Slide out the four rubber grommets for each fan from the fan chassis [1]. b. Lift the fan and remove it from the fan assembly [2].

Removing and installing components

Installing the fan into the fan bracket

1. Place the fan into the fan bracket.

2. Tighten the grommets that secure the fan to the fan bracket.

3. Install the:

a. system fan b. side cover

4. Follow the procedure in After working inside your computer

Removing and installing components

Graphical processing unit(GPU)

Removing the GPU

1. Follow the procedure in Before working inside your computer.

2. Remove the side cover.

3. To remove the GPU:

a. Disconnect the power cable [1] from the GPU card.

NOTE: Not all GPU cards will have power cable, may not apply to all systems.

b. Press and rotate the blue clips backward [2], to unlock the filler bracket.

c. Lift the GPU from the PCIe slot on the system board.

Removing and installing components

Installing the GPU

1. Align and place the GPU to the PCIe slot on the system board.

2. Press it down so that it is securely seated on the slot.

3. Connect the power cable to the GPU.

4. Lock both the blue clips forward on the filler bracket to secure the GPU to the system board.

5. Install the side cover.

6. Follow the procedure in After working inside your computer.

Memory

Removing the memory module

1. Follow the procedure in Before working inside your computer.

2. Remove the following:

a. side cover b. air shroud

3. Press the memory module retention tabs on each side of the memory module.

4. Lift the memory module out of the memory slot on the system board.

Removing and installing components

WARNING: Rotating the memory module out of the slot will cause damage to the memory module. Ensure to

pull it straight out of the memory module slot.

Installing the memory module

1. Align the notch on the memory module with the tab on the memory module connector.

2. Insert the memory module into the memory module slot.

3. Press the memory module firmly until the retention tabs click into place.

NOTE: Do not pull the retention levers up. Always press down firmly on the module until the levers lock into place

unassisted.

4. Install the:

a. air shroud b. side cover

5. Follow the procedure in After working inside your computer

Coin cell battery

Removing the coin cell battery

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a. side cover b. graphical processing unit(GPU) c. air shroud

3. To remove the coin cell battery:

a. Press the release latch [1] away from the battery to allow the battery to pop-up from the socket [2].

Removing and installing components

b. Lift the coin-cell battery out of the system board.

Installing the coin cell battery

1. Place the coin-cell battery into its slot on the system board.

2. Press the coin-cell battery with positive (+) side facing up until the release latch springs back into place and secures it to the system board.

3. To install:

a. air shroud b. graphical processing unit (GPU) c. side cover

4. Follow the procedure in After working inside your computer.

Processor heat sink module

Removing the processor heat sink module

1. Follow the procedure in Before working inside your computer.

Removing and installing components

NOTE: Ensure that you have Torx 30 screwdriver to remove the processor heat sink module (PHM).

2. Remove the:

a. side cover b. air shroud

3. To remove the heat sink:

a. Remove the four heat sink screws [1], in the diagonal order (4, 3, 2, 1). b. Lift the heat sink away from the CPU slot on the system board.

CAUTION: CPU will be removed with the heat sink.

Installing the processor heat sink module

1. Place the heat sink on the CPU slot.

2. Replace the four screws in the diagonal order (1,2,3,4), to secure the heat sink to the system board.

3. Install the:

a. air shroud b. side cover

4. Follow the procedure in After working inside your computer.

Removing and installing components

Removing the CPU

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a. side cover b. air shroud c. processor heat sink module

3. To remove the central processing unit (CPU):

a. Hold the processor heat sink module upside down. b. Pry the two processor carrier latchs [1] from the processor heat sink module. c. Press the other two carrier latchs [2] of the processor carrier and remove it from the slot in the heat sink.

d. Use a torx screwdriver to pry the CPU off the processor heat sink module. Place the blade between the clip and the

CPU.

NOTE: A flatbed screwdriver or plastic scribe can also be used as well.

e. Unlatch the CPU from the two keying latches on the processor carrier and gently lift the CPU.

NOTE: Avoid touching the CPU contacts with your fingers.

76 Removing and installing components

Installing the CPU

1. Orient the processor carrier so that the smooth (logo-less) side of the carrier is facing up and the triangle mark on the carrier is on the bottom left hand corner.

2. Align the processor with the carrier so that the triangle mark on the top side of the processor is aligned with the triangle mark on the carrier.

Removing and installing components

3. Flip both the processor and the carrier over so that the pins on the processor and the logo side of the carrier are facing up.

4. Carefully insert the processor into the carrier so that it is secured by the hooks on the upper and lower side of the carrier.

NOTE:

After inserting the processor into the carrier, check to see whether the small triangle on the processor aligns

with the triangle on the carrier. If they are not aligned repeat the preceding steps.

5. Align the processor and carrier assembly with the heat sink so that the triangle marks on the processor and carrier are aligned with the triangle mark on the top side of the heat sink (captive screw #2).

Removing and installing components

6. Insert the processor and carrier assembly into the heat sink so that the hooks on the four corners of the carrier are locked into the openings of heat sink.

NOTE: After inserting the processor and carrier assembly into the heat sink, double check to see whether the triangle

on the carrier is located on the bottom right corner of the heat sink (when the bottom side of the heat sink is facing up).

7. Install the processor and heat sink onto the central processing unit (CPU) socket and then secure the four captive screws on the heat sink to the system board in sequential order (1 > 2 > 3 > 4).

Removing and installing components

8. Install the:

a. heat sink b. air shroud c. side cover

9. Follow the procedure in After working inside your computer

System board

System board components

Figure 1. Components of the system board

Removing and installing components

1. PCIe 3*16 (4 slots) and 3*8 ( 1 slot) 2. Rear fan 0 connector

3. CPU1 memory slots 4. CPU1 socket

5. CPU1 memory slots 6. Rear fan 1 connector

7. CPU1 PCIe 3 x16 Slots (2) 8. Front panel audio

9. Piezo speaker 10. Power Control

11. Power 2 12. Intrusion switch connector

13. System Fan 3 14. Internal speaker connector

15. CPU0 memory slots 16. CPU0 socket

17. System Fan 2 18. CPU0 memory slots

19. System Fan 1 20. Power 1

21. CPU fan 1 22. Coin Cell battery

23. ODD connector 24. Front Panel USB

25. USB 2_Int 26. Flex USB

27. Power remote 28. VROC_key

Removing system board

1. Follow the procedure in Before working inside your computer.

2. Remove the:

a. side cover

Removing and installing components

b. front bezel c. air shroud d. PCIe card holder e. front system fan f. memory module g. processor heat sink module h. rear system fan

3. Disconnect the following cables from the system board:

● Front panel audio cable [1]

● Power cable

● Power control cable

● Internal chassis speaker cable

● Intrusion module cable

● System fan 3 cable [2]

4. Disconnect the front panel cables [1], power cable [2], front panel USB 2 cable and DD cable [3]

Removing and installing components

5. Remove the right side cover, to disconnect the SATA 0 cable from system board.

NOTE: Depending on the system configuration, additional cables might need to be disconnected.

6. Remove the twelve screws securing the system board to the chassis.

Removing and installing components

7. Lift the system board away from the chassis.

Installing the system board

1. Align and place the system board onto the chassis and slide it back to its position.

2. Tighten the screws to secure the system board to the chassis.

3. Connect all the cables to the connectors on the system board.

4. Install the:

a. rear system fan b. processor heat sink module c. GPU d. memory module e. front system fan f. PCIe card holder g. air shroud

Removing and installing components

h. front bezel i. side cover

5. Flip the system to connect the SATA 0 cable to the connector on the system board.

6. Install the right side cover

7. Follow the procedure in After working inside your computer

RAID controller battery

Removing the RAID controller battery

1. Follow the procedure in Before working inside your computer.

2. Remove the side cover.

3. To remove the RAID controller battery:

a. Disconnect the RAID controller battery cable from the RAID controller card.

b. Push the securing tab out to release the RAID controller battery.

Removing and installing components

c. Lift and remove the RAID controller battery.

Removing and installing components

Installing the RAID controller battery

1. Slide and place the RAID controller battery into the RAID battery bracket.

2. Press the RAID controller battery into the bracket to secure with the securing clips.

3. Connect the RAID controller battery cable.

RAID controller battery bracket

Removing the RAID controller battery bracket

1. Follow the procedure in Before working inside your computer.

2. Remove the side cover.

3. Remove the RAID controller battery

4. To remove the RAID controller battery bracket:

a. Lift up the securing tab (1), and slide the RAID controller battery bracket out (2).

Removing and installing components

Installing the RAID controller battery bracket

1. Slide and place the RAID controller battery bracket the opposite way it was removed.

2. Ensure the tabs on the bracket fits into the holders on the chassis.

VROC module

Removing the VROC module

Plug-out the VROC module from the system board in the upward direction.

Removing and installing components

Installing the VROC module

Plug-in the VROC module to the system board.

Removing and installing components 89

Technology and components

This chapter details the technology and components available in the system.

Topics:

• Memory configuration

• Technologies list

• MegaRAID 9440-8i and 9460-16i controller

• Teradici PCoIP

Memory configuration

This section provides information about the memory configuration for the Dell Precision Tower 7920 systems.

The following table illustrates the memory configuration and population rules for the Dell Precision Tower 7920:

90 Technology and components

Technologies list

This section provides information about the technologies that comes with the Dell Precision 7920 Tower.

The following table lists the basic of technologies that are available on the Dell Precision 7920 Tower systems for Dell internal users only.

Table 3. Technologies list

No. Category Technology Browser Path

1 Chipset Intel C620 Series Chipset

(C621)

2 Processor

3 Memory DDR4

4 Audio Integrated Realtek ALC3234

● Intel Xeon Platinum 81xx Processor

● Intel Xeon Gold 61xx Processor

● Intel Xeon Gold 51xx Processor

● Intel Xeon Silver 41xx Processor

● Intel Xeon Bronze 31xx Processor

● Intel Xeon Gold 52xx processors

● Intel Xeon Silver 42xx processors

● Intel Xeon Bronze 32xx processors

● Intel Xeon Platinum 82xx processors

● Intel Xeon Gold 62xx processors

High Definition Audio Codec (2 Channel)

5 Network NIC Integrated RJ45

6 Graphics Radeon Pro WX

NVIDIA

● 9100

● 7100

● 5100

● 4100

● 3100

● 2100

● 3200

● Quadro GP100

● Quadro P6000

● Quadro P5000

● Quadro P4000

● Quadro P2000

● Quadro P1000

● Quadro P600

● Quadro P400

● Quadro 8000

● Quadro 2200

Technology and components 91

Table 3. Technologies list (continued)

No. Category Technology Browser Path

● Quadro P620

● Quadro GV100

● NVS 310

● NVS 315

● Quadro RTX 4000

● Quadro RTX 5000/6000

● GeForce RTX 2080 B

7 Storage SATA

SAS

Dell UltraSpeed Quad (PCIE M.2 Interposer)

Dell UltraSpeed Duo (PCIE M.2 Interposer)

9 Remote Solutions 1-1 Teradici PCoIP

● CLIENT: Dell or other Branded Zero Client (TERA Gen 2) (Dell-Wyse P25) DUAL Monitor Support

● HOST: PCIe x1 PCoIP Dual Host Card (TERA Gen 2)

● CLIENT: Dell or other Branded Zero Client (TERA Gen 2)

(Dell-Wyse P45 ) QUAD Monitor Support

● HOST: PCIe x1 PCoIP Quad Host Card (TERA Gen 2)

● Support Dual Terra Card configurations

NOTE: For further information about the Teradici PCoIP

Card host driver installation, see Teradici PCoIP.

MegaRAID 9440-8i and 9460-16i controller

Small and medium businesses (SMBs) deploying entry-level server platforms and workstations need affordable, reliable storage solutions. The MegaRAID Tri-Mode Storage Adapter is a 12Gb/s SAS/SATA/PCIe (NVMe) controller card that addresses these needs by delivering proven performance and RAID data protection for a range of non-business crticial applications. The MegaRAID Tri-Mode storage adapters bring NVMe performance benefits to the storage tier by providing connectivity and data protection for SAS/SATA interfaces. Based on the dual-core SAS3516 or SAS3508 RAID on Chip (ROC) and 72-bit DDR4-2133 SDRAM, these controllers provide bandwidth and IOPS performance increases and are ideal for high-end servers utilizing

internal storage or connecting to large-scale external storage enclosures.

NOTE: The MegaRAID 9440 and 9460 controllers are only supported when using Intel Xeon W Series CPUs.

Tri-Mode SerDes Technology enables operation of NVMe, SAS, or SATA storage devices in a single drive bay. All the 3 modes concurrently serving NVMe, SAS, and SATA drives can be operated by a single controller. The controller negotiates between the

Technology and components

speeds and protocols to seamlessly work with any of the three types of storage devices. Tri-Mode support provides a nondisruptive way to evolve existing data center infrastructure. By upgrading to a tri-mode controller, users can expand beyond SAS/SATA and use NVMe without major changes to other system configurations. The MegaRAID Tri-Mode storage adapters support both REFCLK and SRIS based NVMe x1, x2, and x4 devices.

Key Features:

● Tri-Mode SerDes Technology enables the operation of NVMe, SAS or SATA devices in a single drive bay, allowing for endless design flexibility

● Supports 12, 6, and 3 Gb/s SAS and 6, 3 Gb/s SATA data transfer rates

● Up to 8 PCIe links. Each link supporting x4, x2, or x1 link widths, supporting 8.0 GT/s (PCIe Gen3) per lane

● SFF-9402 Compliant, Connector Pin-out

● SFF-8485 Compliant, SGPIO

● Fits into rack-mounted servers with low-profile form factor and side-mounted SAS connectors

● Support critical, high-bandwidth applications with PCIe 3.1 connectivity

● CacheVault flash back-up at power fail. Supports bad block management

● Balance protection and performance for critical applications with RAID levels 0, 1, 5, 6, 10, 50, and 60

Table 4. Features of MegaRAID 9440-8i and 9460-16i controller

9440-8i 9460-16i

Ports 8 internal 16 internal

Connectors 2 x SFF8643 4 x SFF8643 x4

Storage Interface Support

SATA: Eight x1

SAS: One x8, Two x4, Four x2, Eight x1

NVMe: Two x4, Four x2, Four x1

SATA: Sixteen x1

SAS: Two x8, Four x4, Eight x2, Sixteen x1

NVMe: Four x4, Eight x2, Eight x1

Max Devices Per Controller

Cache Memory N/A 4 GB 2133 MHz DDR4 SDRAM

SAS/SATA: 64

NVMe: 4

SAS/SATA: 240

NVMe: 24

Technology and components 93

Table 4. Features of MegaRAID 9440-8i and 9460-16i controller (continued)

9440-8i 9460-16i

I/O Processor / SAS Controller SAS3408 SAS3516

Host Bus Type PCIe 3.1 x8 PCIe 3.1 x8

Cache Protection N/A

Physical Dimensions 6.127” x 2.712” (155.65 mm x 68.90 mm) 6.127” x 2.712” (155.65 mm x 68.90 mm)

Maximum Operating Conditions

MTBF (Calculated) >3,000,000 hours at 40C >3,000,000 hours at 40C

Operating Voltage +12V +/-8%; 3.3V +/-9% +12V +/-8%; 3.3V +/-9%

Hardware Warranty 3 years; with advanced replacement

MegaRAID Management Suite

Operating:

10°C to 55°C

20 to 80% non-condensing

Airflow: 300 LFM

Storage:

-45°C to 105°C

5 to 90% non-condensing

option

LSI Storage Authority (LSA)

StorCLI (command-line interface), CTRL-R (BIOS configuration utility), HII (UEFI Human Interface Infrastructure)

CacheVault

CVPM05

Operating:

10°C to 55°C

20 to 80% non-condensing

Airflow: 300 LFM

Storage:

-45°C to 105°C

5 to 90% non-condensing

3 years; with advanced replacement option

LSI Storage Authority (LSA)

StorCLI (command-line interface), CTRL-R (BIOS configuration utility), HII (UEFI Human Interface Infrastructure)

Regulatory Certifications

OS Support Microsoft Windows, VMware vSphere/

USA (FCC 47 CFR part 15 Subpart B, class B); Canada (ICES -003, Class B); Taiwan (CNS 13438); Japan (VCCI V-3);

Australia/New Zealand (AS/NZS CISPR

22); Korea (RRA no 2013-24 & 25); Europe (EN55022/EN55024);

Safety: EN/IEC/UL 60950; RoHS; WEEE

ESXi, Red Hat Linux, SuSe Linux, Ubuntu Linux, Oracle Linux, CentOS Linux, Debian Linux, Fedora, and FreeBSD. Contact Oracle support for Oracle Solaris driver or software support.

Teradici PCoIP

This section provides an overview of the host driver installation process.

Installing the Teradici PCoIP Card Host Dual/Quad

Install the PCoIP host driver software from dell.com/support.

USA (FCC 47 CFR part 15 Subpart B, class B); Canada (ICES -003, Class B); Taiwan (CNS 13438); Japan (VCCI V-3);

Australia/New Zealand (AS/NZS CISPR

22); Korea (RRA no 2013-24 & 25); Europe (EN55022/EN55024);

Safety: EN/IEC/UL 60950; RoHS; WEEE

Microsoft Windows, VMware vSphere/ ESXi, Red Hat Linux, SuSe Linux, Ubuntu Linux, Oracle Linux, CentOS Linux, Debian Linux, Fedora, and FreeBSD. Contact Oracle support for Oracle Solaris driver or software support.

Technology and components

NOTE: You cannot upgrade the PCoIP host driver software while a VMware View-brokered PCoIP session is active

between a host workstation or host PC and VMware View client. Doing this will result in losing access to your mouse and

keyboard when the driver software is removed.

To upgrade the PCoIP host driver software in this type of deployment, do one of the following:

● Connect to the host from a zero client.

● Upgrade the software while connecting to the host through another desktop-remoting protocol such as RDP or VNC.

Installing the PCoIP Host Driver Software on a Host PC:

1. Download the PCoIP host driver software from the Teradici Support site (click Current PCoIP Product and Releases).

2. Log in to the administrative web interface for the host card.

3. From the Configuration > Host Driver Function menu, enable the Host Driver Function.

4. Restart the host PC.

5. Install the PCoIP host software package appropriate for the operating system installed on the host PC. You can start the install process by double-clicking the installer:

a. 64 bit: PCoipHostSoftware_x64-v4.3.0.msi (or later)

6. When the Welcome screen appears, click Next.

7. Accept the terms, and then click Next.

8. Ensure that the installation location is correct, and click Next.

9. Click Install.

NOTE: For Windows 7, when the driver is installed, a Windows Security dialog may appear. Click Install to continue

with the installation. To keep this dialog box from appearing in the future, select Always trust software from Teradici

Corporation.

10. If prompted, restart the operating system; otherwise, skip this step. When restarted, the host driver software installation process continues when the OS boots up. Click Install to continue.

11. Click Finish to complete the installation.

Power management cable configuration for Teradici PCoIP Portal and Host Card

If the Dell Precision Workstation comes equipped with the optional Teradici PCoIP Portal and Host Card, make sure the power management cable on the Teradici card is connected properly on the system board. The power management cable from the Teradici card must be plugged into the correct Power remote connection on the system board. Refer the below image for an

Technology and components

example of the Power remote connector labeled 30 on the system board diagram:

Make sure the power management cable from the Teradici card is not plugged into either the two-pin Clear CMOS or Clear PSWD jumpers.

Technology and components

Plugging the power management cable into the Clear CMOS jumper will cause the BIOS to reset when sending a remote restart request to the Teradici card. You will then have to reset the time and BIOS settings.

If the power management cable from the Teradici card is plugged into the Clear PSWD jumper, then the BIOS password will be cleared and a new one will need to be configured.

Technology and components

Topics:

• System specifications

• Memory specifications

• Video specifications

• Audio specifications

• Network specifications

• Card Slots

• Storage specifications

• External connectors

• Power specifications

• Physical specifications

• Environmental specifications

• CPU utilization matrix for AEP DIMM

System specifications

Feature

Processor type Intel Xeon Processor Scalable Family

Total cache Up to 38.5 MB

Specification

● Intel Xeon Platinum 81xx processors

● Intel Xeon Gold 61xx processors

● Intel Xeon Gold 51xx processors

● Intel Xeon Silver 41xx processors

● Intel Xeon Bronze 31xx processors

● Intel Xeon Gold 52xx processors

● Intel Xeon Silver 42xx processors

● Intel Xeon Bronze 32xx processors

● Intel Xeon Platinum 82xx processors

● Intel Xeon Gold 62xx series processors

Memory specifications

Features

Type DDR4 RDIMM ECC

Maximum Frequency

Speed Up to 2933 MHz

Connectors 24 DIMM Slots (12 per CPU)

DIMM capacities 4 GB, 8 GB, 16 GB, 32 GB, 64 GB, 128 GB

Specifications

Up to 2933 MHz

NOTE: Six channel memory up to 1.5 TB 2933 MHz DDR4 ECC memory per CPU with select CPU

SKUs..

98 System specifications

Features Specifications

Minimum memory

Maximum memory

16 GB (2x8 GB) i.e. 2 DIMMs per CPU

3 TB

NOTE: Up to 3 TB with select CPU SKUs

Video specifications

Features Specifications

Graphic cards

● Radeon Pro WX 9100

● NVIDIA Quadro GP100

● NVIDIA Quadro P620

● NVIDIA Quadro P2200

● NVIDIA Quadro GV100

● NVIDIA Quadro P6000

● NVIDIA Quadro P5000

● Radeon Pro WX 7100

● Radeon Pro WX 5100

● Radeon Pro WX 4100

● NVIDIA Quadro P4000

● NVIDIA Quadro P2000

● Radeon Pro WX 3100

● Radeon Pro WX 3200

● Radeon Pro WX 2100

● NVIDIA Quadro P1000

● NVIDIA Quadro P600

● NVIDIA Quadro P400

● NVIDIA NVS 310

● NVIDIA NVS 315

● NVIDIA Quadro RTX 4000

● NVIDIA Quadro RTX 5000/6000/ 8000

● NVIDIA GeForce RTX 2080 B

Audio specifications

Features

Type High Definition Audio Codec (2 Channel)

Controller Integrated Realtek ALC3234

Internal Speaker Power Rating

Internal microphone support

Specifications

System specifications 99

Network specifications

Features Specifications

Integrated Intel i219 and i210 Gigabit Ethernet controllers with Intel Remote Wake UP, PXE and Jumbo frames

support.

Network adaptor 2 (Optional)

● Intel i210 10/100/1000 single port PCIe (Gen 3 x1) gigabit network card.

● Intel X550-T2 10GbE dual port PCIe (Gen 3 x4) network card.

● Aquantia AQN-108 2.5Gbit/5Gbe single port PCIe (Gen3 x4) network card.

Card Slots

Features

Type PCIe Gen 3

Slots

Specifications

● two PCIE Gen 3 x16

● two PCIE Gen 3 x16 (enabled with 2nd CPU)

● one PCIE Gen 3 x8 (open ended connector)

● one PCIE Gen 3 x16 (wired as x4)

● one PCIE Gen 3 x16 (wired as x1)

Storage specifications

Features

Externally Accessible

Internally Accessible

Specifications

DVD-ROM; DVD+/-RW Optional 5.25” bay devices: BD, DVD+/-RW

● M.2 NVMe PCIe SSDs—Up to 8* x 1TB drives on 2 Dell Precision Ultra-Speed Drive Quad x16 cards. Requires dual CPU config

● Front FlexBay M.2 NVMe PCIe SSDs—Up to 4* x 1TB drives, 2 drives per CPU. Requires dual CPU config

● Up to 8 x 3.5" (or 2.5") SATA Drives

● Up to 10 x 3.5" (or 2.5") SATA/SAS Drives with optional controller

External connectors

Features

Audio

Network Rear—2 x RJ45 Network ports

Serial port Rear—1 x Serial port

USB

PS2

100 System specifications

Specifications

● Rear—1 x Audio Line out

● Rear—1 x Audio Line in/Microphone

● Front—1 x Universal Audio Jack

● Front—2 x USB 3.1 Gen 1 and 2 x USB 3.1 Gen 1 Type-C (1 with PowerShare)

● Rear—6 x USB 3.1 Gen 1

● Rear—1 x Keyboard

● Rear—1 x Mouse

Dell Precision 7920 Tower User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Chassis

Front view

Back view

Internal view

Major components of your system

Working on your computer

Safety instructions

Turning off your computer — Windows

Before working inside your computer

After working inside your computer

Removing and installing components

Screw size list

Recommended tools

Power supply unit (PSU)

Removing the PSU

Installing the PSU

Side cover

Removing the side cover

Installing the side cover

Air shroud

Removing the air shroud

Installing the air shroud fan assembly

Removing the air shroud fan

Installing the air shroud fan

Front bezel

Removing the front bezel

Installing the front bezel

PCIe holder

Removing PCIe card holder

Installing the PCIe card holder

Intrusion switch

Removing the intrusion switch

Installing the intrusion switch

Front system fan assembly

Removing the front system fan assembly

Installing the front system fan assembly

Internal chassis speaker

Removing the internal chassis speaker

Installing the internal chassis speaker

Hard disk drive and the Optical disk drive bezel

Removing the HDD bezel

Installing the HDD bezel

Hard disk drive assembly

Removing the HDD carrier

Installing the HDD carrier

Removing the HDD

Installing the HDD

NVMe Flexbay

Removing the NVMe Flexbay

Installing the NVMe flexbay

Front input and output bezel

Removing the front input and output bezel

Installing the front input and output bezel

Front input and output panel

Removing the front input and output panel

Installing the front input and output panel

Removing the input and output panel bracket

Installing the input and output panel

Rear system fan

Removing the rear system fan

Installing the rear system fan

Right side cover

Removing the right side cover

Installing the right side cover

Hard disk drive and optical disk drive frame

Removing the HDD and ODD frame

Installing the HDD and ODD frame

Slim Optical Disk Drive

Removing the slim ODD and ODD latch

Installing the slim ODD and ODD latch

5.25-inch optical drive

Removing the 5.25-inch optical drive

Installing the 5.25-inch optical drive

Power distribution and fan control board

Removing the power distribution and fan control board

Installing the power distribution and fan control board