The information in this User’s Manual has been carefully reviewed and is believed to be accurate.
The vendor assumes no responsibility for any inaccuracies that may be contained in this document,
makes no commitment to update or to keep current the information in this manual, or to notify any
person or organization of the updates.
Please Note: For the most up-to-date version of
this manual, please see our web site at www.supermicro.com.
SUPERMICRO COMPUTER reserves the right to make changes to the product described in this
manual at any time and without notice. This product, including software, if any, and documentation may not, in whole or in part, be copied, photocopied, reproduced, translated or reduced to any
medium or machine without prior written consent.
IN NO EVENT WILL SUPERMICRO COMPUTER BE LIABLE FOR DIRECT, INDIRECT, SPECIAL,
INCIDENTAL, SPECULATIVE OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE
OR INABILITY TO USE THIS PRODUCT OR DOCUMENTATION, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES. IN PARTICULAR, THE VENDOR SHALL NOT HAVE
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Unless you request and receive written permission from SUPER MICRO COMPUTER, you may not
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Information in this document is subject to change without notice. Other products and companies
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holders.
LE 1 Onboard +5V Standby PWR warning LED Indicator
LE3/LE4 BIOS POST Code Indicators (See Appendix A)
*PDSM4 only
5-11
S
UPERSERVER 5025M-4/5025M-i User's Manual
5-9 Connector
Defi nitions
Main ATX Power Supply
Connector
The primary power supply connector
(JPW1) meets the SSI (Superset ATX)
24-pin specifi cation. Refer to the table
on the right for the pin defi nitions of
the ATX 24-pin power connector. You
must also connect the 8-pin (JPW2)
processor power connector to your
power supply (see below).
Processor Power Connector
JPW2 must also be connected to the
power supply to provide power for the
processor. See the table on the right
for pin defi nitions.
ATX Power 24-pin Connector
Pin Defi nitions (JPW1)
Pin# Defi nition Pin # Defi nition
13+3.3V1+3.3V
14-12V2+3.3V
15COM3COM
16PS_ON4+5V
17COM5COM
18COM6+5V
19COM7COM
20Res (NC)8PWR_OK
21+5V95VSB
22+5V10+12V
23+5V11+12V
24COM12+3.3V
+12V 8-pin Power
Pin Defi nitions (JPW2)
Pins Defi nition
1 - 4Ground
5 - 8+12V
Required Connection
PW_ON Connector
The PW_ON connector is on pins 1
and 2 of JF1. This header should
be connected to the chassis power
button. See the table on the right for
pin defi nitions.
Reset Connector
The reset connector is located on pins
3 and 4 of JF1 and attaches to the
reset switch on the computer chas-
sis. See the table on the right for pin
defi nitions.
Power Button
Pin Defi nitions (JF1)
Pin# Defi nition
1PW_ON
2Ground
Reset Button
Pin Defi nitions (JF1)
Pin# Defi nition
3Reset
4Ground
5-12
Chapter 5: Advanced Motherboard Setup
Overheat LED (OH)
Connect an LED to the OH connection
on pins 7 and 8 of JF1 to provide ad-
vanced warning of chassis overheat-
ing. Refer to the table on the right for
pin defi nitions.
NIC2 (JLAN2) LED
The LED connections for JLAN2 are
on pins 9 and 10 of JF1. Attach an
LED cable to display network activ-
ity. See the table on the right for pin
defi nitions.
OH/Fan Fail LED
Pin Defi nitions (JF1)
Pin# Defi nition
7Vcc
8Ground
NIC2 LED
Pin Defi nitions (JF1)
Pin# Defi nition
9Vcc
10Ground
NIC1 (JLAN1) LED
The LED connections for JLAN1 are
on pins 11 and 12 of JF1. Attach an
LED cable to display network activ-
ity. See the table on the right for pin
defi nitions.
IDE/SATA LED
The IDE/SATA LED connection is lo-
cated on pins 13 and 14 of JF1. This
LED is used to display all IDE and
SATA activity. See the table on the
right for pin defi nitions.
NIC1 LED
Pin Defi nitions (JF1)
Pin# Defi nition
11Vcc
12Ground
IDE/SATA LED
Pin Defi nitions (JF1)
Pin# Defi nition
13Vcc
14HD Active
5-13
S
UPERSERVER 5025M-4/5025M-i User's Manual
Power On LED
The Power On LED connector is lo-
cated on pins 15 and 16 of JF1 (use
JLED for a 3-pin connector). This
connection is used to provide LED
indication of power being supplied to
the system. See the table on the right
for pin defi nitions.
NMI Button
The non-maskable interrupt button
header is located on pins 19 and 20
of JF1. Refer to the table on the right
for pin defi nitions.
Power LED
Pin Defi nitions (JF1)
Pin# Defi nition
155V Stby
16Control
NMI Button
Pin Defi nitions (JF1)
Pin# Defi nition
19Control
20Ground
Fan Headers
There are fi ve fan headers on the
motherboard, which are designated
CPU_FAN1 through FAN5. Connect
the fan on your CPU heatsink to the
CPU_FAN1 header. See the table on
the right for pin defi nitions.
ATX PS/2 Keyboard and
PS/2 Mouse Ports
The ATX PS/2 keyboard and the
PS/2 mouse are located on J28. The
mouse port is above the keyboard
port. See the table on the right for
pin defi nitions.
Fan Header
Pin Defi nitions
(FAN1-5)
Pin# Defi nition
1Ground (Black)
2+12V (Red)
3Tachometer
4PWM Control
PS/2 Keyboard and
Mouse Port Pin
Defi nitions (J28)
Pin# Defi nition
1Data
2NC
3Ground
4VCC
5Clock
6NC
5-14
Chapter 5: Advanced Motherboard Setup
Chassis Intrusion
The Chassis Intrusion header is des-
ignated JL1. See the board layout for
the location of JL1 and the table on
the right for pin defi nitions.
Wake-On-LAN
The Wake-On-LAN header is desig-
nated WOL on the motherboard. See
the table on the right for pin defi ni-
tions. You must also have a LAN card
with a Wake-On-LAN connector and
cable to use this feature.
Chassis Intrusion
Pin Defi nitions (JL1)
Pin# Defi nition
1Intrusion Input
2Ground
Wake-On-LAN
Pin Defi nitions (WOL)
Pin# Defi nition
1+5V Standby
2Ground
3Wake-up
Wake-On-Ring
The Wake-On-Ring header is designated
JWOR. This function allows your computer
to receive and be "awakened" by an incom-
ing call when in the suspend state. See the
table on the right for pin defi nitions. You
must also have a WOR card and cable to
use this feature.
LAN (Ethernet Port)
Two Ethernet ports (designated JLAN1
and JLAN2) are located beside the COM
port on the I/O backplane. These ports
accept RJ45 type cables.
Wake-On-Ring
Pin Defi nitions
(JWOR)
Pin# Defi nition
1Ground (Black)
2Wake-up
5-15
S
UPERSERVER 5025M-4/5025M-i User's Manual
Serial Ports
Two serial ports are included on the
motherboard. COM1 is a backpanel
port and COM2 is a header located
near the parallel port connector. See
the table on the right for pin defi ni-
tions.
Power LED
The Power LED header is located on
JLED. This header provides LED in-
dication of power being supplied to the
system. See the table on the right for
pin defi nitions.
Serial Port Pin Defi nitions
(COM1/COM2)
Pin # Defi nitionPin # Defi nition
1CD6 DSR
2RD7 RTS
3TD8 CTS
4DTR9RI
5Ground10NC
Power LED
Pin Defi nitions
(JLED)
Pin# Defi nition
1Anode
2Key
3Cathode
Universal Serial Bus (USB)
There two Universal Serial Bus ports
located on the I/O panel and four ad-
ditional USB headers located on the
motherboard. The headers can be
used to provide front side USB access
(cables not included). See the table on
the right for pin defi nitions.
5-16
Universal Serial Bus
Pin Defi nitions (USB)
USB1/2
Pin # Defi nition
1+5V1+5V
2PO-2PO-
3PO+3PO+
4Ground4Ground
5N/A5Key
USB3/4/5/6
Pin # Defi nition
5-10 Jumper Settings
Explanation of
Jumpers
To modify the operation of the mother-
board, jumpers can be used to choose
between optional settings. Jumpers
create shorts between two pins to
change the function of the connector.
Pin 1 is identifi ed with a square solder
pad on the printed circuit board. See
the motherboard layout pages for
jumper locations.
Note: On a two-pin jumper, "Closed"
means the jumper is on both pins and
"Open" means the jumper is either on
only one pin or completely removed.
Chapter 5: Advanced Motherboard Setup
321
Connector
Pins
Jumper
321
Setting
CMOS Clear
JBT1 is used to clear CMOS (which will also clear any passwords). Instead of pins,
this jumper consists of contact pads to prevent accidentally clearing the contents
of CMOS. To clear CMOS,
1) First power down the system and unplug the power cord(s)
2) With the power disconnected, short the CMOS pads with a metal object such as
a small screwdriver
3) Remove the screwdriver (or shorting device)
4) Reconnect the power cord(s) and power on the system.
Note: Do not use the PW_ON connector to clear CMOS.
Speaker Connector
To use the internal (onboard) speaker,
place a jumper on pins 3-4 of J9. If
you wish to use an external speaker,
Setting Defi nition
Jump pins 3-4Internal Speaker
Connect to 1-4External Speaker
Speaker Jumper
Pin Defi nitions (J9)
connect the speaker header to all four
pins of J9.
5-17
S
UPERSERVER 5025M-4/5025M-i User's Manual
Watch Dog Enable/Disable
JWD enables the Watch Dog function,
a system monitor that takes action
when a software application freezes
the system. Jumping pins 1-2 will
have WD reboot the system if a pro-
gram freezes. Jumping pins 2-3 will
generate a non-maskable interrupt for
the program that has frozen. See the
table on the right for jumper settings.
Watch Dog must also be enabled in
BIOS.
LAN Enable/Disable
Change the setting of jumper JPL1 to
enable or disable the LAN (Ethernet)
port on the motherboard. See the
table on the right for jumper settings.
The default setting is enabled.
Watch Dog
Jumper Settings (JWD)
Jumper Setting Defi nition
Pins 1-2Reset
Pins 2-3NMI
OpenDisabled
Note: when Watch Dog is enabled, the user must
write their own application software to disable the
Watch Dog Timer.
LAN Enable/Disable
Jumper Settings (JPL1)
Jumper Setting Defi nition
Pins 1-2Enabled
Pins 2-3Disabled
SMBus to PCI
Jumpers JP1 and JP2 allow you to
connect PCI/PCI-X slots to the Sys-
tem Management Bus. The default
setting is “Open” to disable the con-
nection. See the table on the right for
jumper settings.
SMBus to PCI
Enable/Disable
Jumper Settings (JP1/JP2)
Jumper Setting Defi nition
ClosedEnabled
OpenDisabled
5-18
Chapter 5: Advanced Motherboard Setup
System Power Force On
Jumper JPF allows you to enable or
disable the Force-Power-On function.
If enabled, system power will always
stay on. If disabled (the normal set-
ting), the user needs to press the power
button to power on the system.
VGA Enable/Disable
JPG1 allows you to enable or disable
the VGA port. The default position is
on pins 1 and 2 to enable VGA. See
the table on the right for jumper set-
tings.
System Power Force On
Jumper Settings
(JPF)
Jumper Setting Defi nition
ClosedForce On
OpenDisabled
VGA Enable/Disable
Jumper Settings (JPG1)
Jumper Setting Defi nition
Pins 1-2*Enabled
Pins 2-3Disabled
SCSI Controller Enable/
Disable (5025M-4)
Jumper JPA1 is used to enable or dis-
able the LSI SCSI controller. The de-
fault setting is on pins 1-2 to enable
SCSI. See the table on the right for
jumper settings.
SCSI Termination Enable/
Disable
Jumper JPA2 is used to enable or dis-
able termination for the SCSI connec-
tor. The default setting is open to en-
able termination. See the table on the
right for jumper settings.
Note: In order for the SCSI drives to
function properly, please do not change
the default setting (enabled) set by the
SCSI Enable/Disable
Jumper Settings (JPA1)
Both Jumpers Defi nition
Pins 1-2Enabled
Pins 2-3Disabled
SCSI Term. Enable/Disable
Jumper Settings (JPA2)
Jumper Setting Defi nition
OpenEnabled
ClosedDisabled
manufacturer.)
5-19
S
UPERSERVER 5025M-4/5025M-i User's Manual
5-11 Onboard Indicators
LAN LEDs
The Ethernet port has two LEDs. The
yellow (right) LED indicates activ-
ity while the left LED may be green,
orange or off to indicate the speed of
the connection. See the table on the
right for the functions associated with
the left (activity speed) LED.
JLAN Left LED
(Connection Speed Indicator
LED Color Defi nition
Off10 MHz
Green100 MHz
Amber1 GHz
5-20
Chapter 5: Advanced Motherboard Setup
5-12 Parallel Port and Peripheral Drive Connections
Use the following information to connect the IDE hard disk drive cables.
• A red mark on a wire typically designates the location of pin 1.
• The 80-wire ATA100/66 IDE hard disk drive cable that came with your system
has two connectors to support two drives. This special cable should be used
to take advantage of the speed this new technology offers. The blue connector
connects to the onboard IDE connector interface and the other connector(s) to
your hard drive(s). Consult the documentation that came with your disk drive
for details on actual jumper locations and settings for the hard disk drive.
Parallel Port Connector
The parallel port is a header on
the motherboard near PCI-X slot
1. See the table at right for pin
defi nitions.
Parallel (Printer) Port Connector
Pin Defi nitions (Printer)
Pin# Defi nition Pin # Defi nition
1Strobe-2Auto Feed-
3Data Bit 04Error-
5Data Bit 16Init-
7Data Bit 28SLCT IN-
9Data Bit 310GND
11Data Bit 412GND
13Data Bit 514GND
15Data Bit 616GND
17Data Bit 718GND
19ACK20GND
21BUSY22Write Data
23PE24Write Gate
25SLCT26NC
LP IPMI
The LP IPMI socket (slot 7) on
the motherboard is included
for the use of a low profile
IPMI (Intelligent Management
Platform Interface) card.
5-21
S
UPERSERVER 5025M-4/5025M-i User's Manual
Floppy Connector
The fl oppy connector is located
near PCI-X slot 1. See the table
at right for pin defi nitions.
Floppy Drive Connector
Pin Defi nitions (J27)
Pin# Defi nition Pin # Defi nition
1Ground2FDHDIN
3Ground4Reserved
5Key6FDEDIN
7Ground8Index
9Ground10Motor Enable
11Ground12Drive Select B
13Ground14Drive Select B
15Ground16Motor Enable
17Ground18DIR
19Ground20STEP
21Ground22Write Data
23Ground24Write Gate
25Ground26Track 00
27Ground28Write Protect
29Ground30Read Data
31Ground32Side 1 Select
33Ground34Diskette
SATA Connectors
There are no jumpers to con-
fi gure the onboard SATA con-
nectors. See the table on the
right for pin defi nitions.
SATA Connector Pin Defi nitions
(SATA0-3)
Pin # Defi nition
1Ground
2TXP
3TXN
4Ground
5RXN
6RXP
7Ground
5-22
IDE Connector
There are no jumpers to confi gure
the onboard IDE interface. See
the table below for pin defi nitions.
Chapter 5: Advanced Motherboard Setup
IDE Drive Connectors
Pin Defi nitions (J3)
Pin# Defi nition Pin # Defi nition
1Reset IDE2Ground
3Host Data 74Host Data 8
5Host Data 66Host Data 9
7Host Data 58Host Data 10
9Host Data 410Host Data 11
11Host Data 312Host Data 12
13Host Data 214Host Data 13
15Host Data 116Host Data 14
17Host Data 018Host Data 15
19Ground20Key
21DRQ322Ground
23I/O Write24Ground
25I/O Read26Ground
27IOCHRDY28BALE
29DACK330Ground
31IRQ1432IOCS16
33Addr134Ground
35Addr036Addr2
37Chip Select 038Chip Select 1
39Activity40Ground
5-23
S
UPERSERVER 5025M-4/5025M-i User's Manual
SCSI Connector
(5025M-4)
Refer to the table at right for
pin defi nitions for the Ultra320
SCSI connector located at
JA1.
Pin# Defi nition Pin # Defi nition
1+DB (12)35-DB (12)
2+DB (13)36-DB (13)
3+DB (14)37-DB (14)
4+DB (15)38-DB (15)
5+DB (P1)39-DB (P1)
6+DB (0)40-DB (0)
7+DB (1)41-DB (1)
8+DB (2)42-DB (2)
9+DB (3)43-DB (3)
10+DB (4)44-DB (4)
11+DB (5)45-DB (5)
12+DB (6)46-DB (6)
13+DB (7)47-DB (7)
14+DB (P)48-DB (P)
Ultra320 SCSI Drive Connector
Pin Defi nitions (JA1)
15Ground49Ground
16DIFFSENS50Ground
17TERMPWR51TERMPWR
18TERMPWR52TERMPWR
19Reserved53Reserved
20Ground54Ground
21+ATN55-ATN
22Ground56Ground
23+BSY57-BSY
24+ACK58-ACK
25+RST59-RST
26+MSG60-MSG
27+SEL61-SEL
28+C/D62-C/D
29+REQ63-REQ
30+I/O64-I/O
31+DB (8)65-DB (8)
32+DB (9)66-DB (9)
33+DB (10)67-DB (10)
34+DB (11)68-DB (11)
5-24
Chapter 6: Advanced Chassis Setup
Chapter 6
Advanced Chassis Setup
This chapter covers the steps required to install components and perform mainte-
nance on the SC822S-400LP/SC822i-400LP chassis. For component installation,
follow the steps in the order given to eliminate the most common problems encoun-
tered. If some steps are unnecessary, skip ahead to the step that follows.
Tools Required
The only tool you will need to install components and perform maintenance is a
Philips screwdriver.
6-1 Static-Sensitive Devices
Electricstatic discharge (ESD) can damage electronic com ponents. To prevent
damage to any printed circuit boards (PCBs), it is important to handle them very
carefully. The following measures are generally suffi cient to protect your equipment
from ESD damage.
Precautions
Use a grounded wrist strap designed to prevent static discharge.
Touch a grounded metal object before removing any board from its antistatic
bag.
Handle a board by its edges only; do not touch its components, peripheral chips,
memory modules or gold contacts.
When handling chips or modules, avoid touching their pins.
Put the motherboard, add-on cards and peripherals back into their antistatic bags
when not in use.
For grounding purposes, make sure your computer chassis provides excellent
conductivity between the power supply, the case, the mounting fasteners and
the motherboard.
Unpacking
The motherboard is shipped in antistatic packaging to avoid static damage. When
unpacking the board, make sure the person handling it is static protected.
6-1
S
UPERSERVER 5025M-4/5025M-i Manual
Figure 6-1. Chassis: Front and Rear Views
5025M-4
5025M-i
CD-ROM DriveFloppy Drive
SCSI Drives (6)5.25" Drive Bay
CD-ROM DriveFloppy Drive
IDE Drives (6)
5.25" Drive Bay
Control Panel
System ResetMain Power
Control Panel
System ResetMain Power
Rear view (both chassis)
Keyboard/Mouse Ports
USB Ports
COM1 Port
VGA Port
6-2
7 Low Profi le PCI Slots
Ethernet Ports
Chapter 6: Advanced Chassis Setup
6-2 Control Panel
The control panel (located on the front of the chassis) must be connected to the
JF1 connector on the motherboard to provide you with system status indications. A
ribbon cable has bundled these wires together to simplify the connection. Connect
the cable from JF1 on the motherboard to the Control Panel PCB (printed circuit
board). Make sure the red wire plugs into pin 1 on both connectors. Pull all excess
cabling out of the airfl ow path. The LEDs inform you of system status. See "Chapter
3: System Interface" for details on the LEDs and the control panel buttons. Details
on JF2 can be found in the "Chapter 5: Advanced Motherboard Installation."
6-3 System Fans
Three 8-cm fans provide all the cooling needed for the SuperServer 5025M-
4/5025M-i. It is very important that the chassis top cover is properly installed and
making a good seal for the cooling air to circulate properly through the chassis and
cool the components. See Figure 6-2.
System Fan Failure
Fan speed is controlled by system temperature via a BIOS setting. If a fan fails,
the remaining fan will ramp up to full speed and the overheat/fan fail LED on the
control panel will turn on. Replace the failed fan at your earliest convenience with
the same type and model (the system can continue to run with a failed fan). Re-
move the top chassis cover while the system is still running to determine which of
the four fans has failed.
Replacing System Cooling Fans
1. Removing a fan
Remove the chassis cover. Press the tab on the top of the fan housing of the failed
fan and remove the entire housing unit. The system power need not be shut down
since the fans are all hot-pluggable.
2.Installing a new fan
Replace the failed fan with an identical 8-cm, 12 volt fan (available from Supermicro,
p/n FAN-044). Position the new fan at its proper place in the chassis by fi tting the
fan with its housing onto the fan mounts in the chassis. A "click" can be heard if the
fan (in its housing) is properly installed. If the system is already powered on, the fan
will activate immediately upon being connected to its header on the motherboard.
6-3
S
UPERSERVER 5025M-4/5025M-i Manual
Motherboard
Power Supply
System Cooling Fans
Figure 6-2. System Cooling Fans
6-4 Drive Bay Installation/Removal
Accessing the Drive Bays
SCSI Drives: You do not need to access the inside of the chassis to replace or
swap SCSI drives. Proceed to the next step for instructions.
Note: You must use standard 1" high, 80-pin SCA SCSI drives in the
SuperServer 5025M-4.
CD-ROM/Floppy Disk Drive: For installing/removing the CD-ROM or fl oppy disk
drive, you will need to gain access to the inside of the server by removing the top
cover of the chassis. Proceed to the "CD-ROM and Floppy Drive Installation" sec-
tion later in this chapter for instructions.
5.25" Drive Bay: For installing/removing a component in the 5.25" drive bay, proceed
to the "5.25" Drive Bay Installation" section later in this chapter for instructions.
6-4
Chapter 6: Advanced Chassis Setup
SCSI Drive Installation (5025M-4 only)
1. Mounting a SCSI drive in a drive carrier
The SCSI drives are mounted in drive carriers to simplify their installation and re-
moval from the chassis. Since these carriers also help promote proper airfl ow for
the SCSI drive bays, even empty carriers without SCSI drives installed must remain
in the chassis. To add a new SCSI drive, install a drive into the carrier with the
printed circuit board side toward the carrier so that the mounting holes align with
those in the carrier. Secure the drive to the carrier with four screws, as shown in
Figure 6-3.
Figure 6-3. Mounting a SCSI Drive in a Carrier
Use caution when working around the SCSI backplane. Do not
touch the backplane with any metal objects and make sure no
!
!
ribbon cables touch the backplane or obstruct the holes, which
aid in proper airfl ow.
Important: Regardless of how many SCSI hard drives are in-
stalled, all SCSI drive carriers must remain in the drive bays for
proper airfl ow.
6-5
S
UPERSERVER 5025M-4/5025M-i Manual
2. Installing/removing hot-swap SCSI drives
The SCSI drive bays are located in the front of the chassis and are hot-swap units,
meaning that they can be installed and removed while the system is running. To
remove a SCSI drive, fi rst push the colored release button located beside the drive's
LEDs, then swing the handle fully out and use it to pull the SCSI drive carrier straight
out (see Figure 6-4).
Release Button
Figure 6-4. Removing SCSI Drives
Important: All of the SCSI drive carriers must remain in the drive
!
bay to maintain proper cooling airfl ow.
6-6
Chapter 6: Advanced Chassis Setup
SCA Backplane
The SCSI drives plug into a SAF-TE compliant SCA backplane (CSE-SCA-822S)
that provides power, SCSI ID and bus termination. A RAID controller can be used
with the SCA backplane to provide data security. The operating system you use
must have RAID support to enable the hot-swap capability of the SCSI drive. The
SCA SCSI backplane is already preconfi gured; there are no jumpers or switches.
Figure 6-5. SCSI SCA Backplane
SCSI ID#0
SCSI ID#1
SCSI ID#2
SCSI ID#3
SCSI ID#4
SCSI ID#5
SCSI ID#6 is used for the SAF-TE Controller
6-7
S
UPERSERVER 5025M-4/5025M-i Manual
IDE Drive Installation (5025M-i only)
1. Mounting an IDE drive in the drive carrier
Like SCSI drives, IDE drives are also mounted in drive carriers to simplify their
installation and removal from the chassis. These carriers also help promote proper
airfl ow. For this reason, even empty carriers without IDE drives installed must
remain in the chassis. To add a new IDE drive, install a drive into the carrier with
the printed circuit board side toward the carrier so that the mounting holes align
with those in the carrier. Secure the drive to the carrier with the four screws.
2. Installing/Removing IDE drives
The two IDE drive bays located in the front of the chassis will each accommodate
up to three IDE drives. IDE drives are not hot-swappable, meaning system power
must be turned off before installing and/or removing them. To install or remove a
drive, fi rst power down the system and then remove the top cover of the chassis.
Unscrew the retention screw at the top center of the drive, then push the drive
carrier out from the back until you can grasp and pull it out through the front of the
chassis. Reverse this procedure when installing a drive carrier, making sure you
screw in the retention screw. Replace the top cover when fi nished.
Installing a Component in the 5.25" Drive Bay
1. Mounting the component in the drive carrier
A component such as an IDE hard drive or an additional SCSI drive that can fi t into
a standard IDE drive bay can be mounted in the 5.25" drive bay. The component
should also be mounted in a drive carrier to simplify its installation and removal
from the chassis. These carriers also help promote proper airfl ow. For this reason,
even empty carriers without a component installed must remain in the chassis. To
add a component such as those noted above, install a drive into the carrier with
the printed circuit board side toward the carrier so that the mounting holes align
with those in the carrier. Secure the drive to the carrier with the four screws.
6-8
Chapter 6: Advanced Chassis Setup
2. Installing/removing a 5.25" drive bay component
A single 5.25" IDE drive bay is located in the front of the chassis, making it eas-
ily accessible for installation and removal. This component is not hot-swappable,
meaning system power must be turned off before installing and/or removing them.
To remove the drive carrier, fi rst power down the system and then remove the top
cover of the chassis. Unscrew the retention screw at the top center of the drive,
then push the drive carrier out from the back until you can grasp and pull it out
through the front of the chassis. Attach the component to the carrier if installing.
Then reverse the drive carrier removal procedure to install the drive, making sure
you screw in the retention screw. Replace the top cover when fi nished.
CD-ROM and Floppy Drive Installation
The top cover of the chassis must be opened to gain full access to the CD-ROM
and fl oppy drive bays. The 5025M-4/5025M-i accomodates only slim CD-ROM
drives. Side mounting brakets are typically needed to mount a CD-ROM drive in
the 5025M-4/5025M-i server.
First, release the retention screws that secure the server unit to the rack. Grasp
the two handles on either side and pull the unit straight out until it locks (you will
hear a "click"). Next, depress the two buttons on the top of the chassis to release
the top cover and at the same time, push the cover away from you until it stops.
You can then lift the top cover from the chassis to gain full access to the inside of
the server. You must power down the system before installing or removing fl oppy
or IDE components.
Drives mount on rails and should "click" into place to be correctly and fully installed
in their bays.
• The fl oppy disk drive cable has seven twisted wires.
• A color mark on a cable typically designates the location of pin 1.
• A single fl oppy disk drive ribbon cable has 34 wires and two connectors to provide
for two fl oppy disk drives. The connector with twisted wires always connects to
drive A, and the connector that does not have twisted wires always connects to
drive B.
6-9
S
UPERSERVER 5025M-4/5025M-i Manual
6-5 Power Supply
The SuperServer 5025M-4/5025M-i has a single 400 watt power supply. This power
supply module has an auto-switching capability, which enables it to automatically
sense and operate at a 100V to 220V input voltage.
Power Supply Failure
If the power supply fails, the system will shut down and you will need to replace the
power supply unit. Replacement units can be ordered directly from Supermicro.
See contact information in Chapter 1.
Removing/Replacing the Power Supply
Replace the failed power supply module with the same model - SP402-2C (p/n
PWS-0027), which can be ordered directly from Supermicro (see Contact Informa-
tion in the Preface).
1. Removing the power supply
First shut down the system, then unplug the power cord. Remove the chassis cover
by pressing the two release buttons on the top of the chassis (near the front) then
push the chassis top rearward about one inch and lift it off. To remove the failed
power supply, remove the screws at the back that secure it to the chassis and pull
the unit straight out with the rounded handle.
2. Installing a new power supply
Replace the failed hot-swap unit with another SP402-2C power supply unit (p/n
PWS-0027). Push the new power supply unit into the power bay until you hear a
*click*. Secure the power supply with the screws you removed previously and fi nish
by plugging in the AC power cord.
6-10
Chapter 7: BIOS
Chapter 7
BIOS
7-1 Introduction
This chapter describes the Phoenix BIOS™ Setup utility for the PDSM4/PDSME.
The Phoenix ROM BIOS is stored in a fl ash chip and can be easily upgraded using
a fl oppy disk-based program.
Note: Due to periodic changes to the BIOS, some settings may have been added or
deleted and might not yet be recorded in this manual. Please refer to the Manual
Download area of the Supermicro web site <http://www.supermicro.com> for any
changes to BIOS that may not be refl ected in this manual.
Warning: Do not shut down or reset the system while updating BIOS to prevent
possible boot failure.
System BIOS
The BIOS is the Basic Input Output System used in all IBM® PC, XT™, AT®, and
®
PS/2
compatible computers. The Phoenix BIOS fl ash chip stores the system pa-
rameters, such type of disk drives, video displays, etc. in the CMOS. The CMOS
memory requires very little electrical power. When the computer is turned off, a
backup battery provides power to the BIOS fl ash chip, enabling it to retain system
parameters. Each time the computer is powered-on the computer is confi gured
with the values stored in the BIOS ROM by the system BIOS, which gains control
at boot-up.
How To Change the Confi guration Data
The CMOS information that determines the system parameters may be changed by
entering the BIOS Setup utility. This Setup utility can be accessed by pressing the
<Delete> key at the appropriate time during system boot, see below.
Starting the Setup Utility
Normally, the only visible POST (Power On Self Test) routine is the memory test.
As the memory is being tested, press the <Delete> key to enter the main menu
of the BIOS Setup utility. From the main menu, you can access the other setup
screens, such as the Security and Power menus. Beginning with Section 7-3,
detailed descriptions are given for each parameter setting in the Setup utility.
Note: fan speed is controlled by the “Auto Fan Control” setting in BIOS. The rec-
ommended setting for the 5025M-4/5025M-i is “4-pin (Server)” (see page 7-16).
7-1
SUPERSERVER 5025M-4/5025M-i User's Manual
7-2 Running Setup
*Default settings are in bold text unless otherwise noted.
The BIOS setup options described in this section are selected by choosing the ap-
propriate text from the main BIOS Setup screen. All displayed text is described in
this section, although the screen display is often all you need to understand how
to set the options (see on next page).
When you fi rst power on the computer, the Phoenix BIOS™ is immediately acti-
vated.
While the BIOS is in control, the Setup program can be activated in one of two
ways:
1. By pressing <Delete> immediately after turning the system on, or
2. When the message shown below appears briefl y at the bottom of the screen dur-
ing the POST (Power On Self-Test), press the <Delete> key to activate the main
Setup menu:
Press the <Delete> key to enter Setup
Note: Please load "System Setup Default" when using the system the fi rst time.
7-3 Main BIOS Setup
All main Setup options are described in this section. The main BIOS Setup
screen is displayed below.
Press the <Esc> key to exit the CMOS Setup Menu. The next section describes in
detail how to navigate through the menus.
Items that use submenus are indicated with the
press the <Enter> key to access the submenu.
After entering the submenu, use the Up/Down arrow keys to move among the different
settings in each menu. Use the Left/Right arrow keys to change the options for each
setting. Press <Tab>, <Shift-Tab>, or <Enter> to select a fi eld.
icon. With the item highlighted,
7-2
Main BIOS Setup Menu
Chapter 7: BIOS
Main Setup Features
System Time
To set the system date and time, key in the correct information in the appropriate
fi elds. Then press the <Enter> key to save the data.
System Date
Using the arrow keys, highlight the month, day and year fi elds and enter the correct
data. Press the <Enter> key to save the data.
BIOS Date
This feature allows BIOS to automatically display the BIOS date.
7-3
SUPERSERVER 5025M-4/5025M-i User's Manual
Legacy Diskette A
This setting allows the user to set the type of fl oppy disk drive installed as diskette A.
The options are Disabled, 360Kb 5.25 in, 1.2MB 5.25 in, 720Kb 3.5 in, 1.44/1.25MB,
3.5 in and 2.88MB 3.5 in.
Parallel ATA
This setting allows the user to enable or disable the Parallel ATA function. The
options are Disabled and Enabled.
Serial ATA
This setting allows the user to enable or disable the Serial ATA function. The
options are Disabled and Enabled.
Native Mode Operation
Select the native mode for ATA. The options are: Serial ATA and Auto.
SATA Controller Mode
Select Compatible to allow the SATA and PATA drives to be auto-detected and
placed in the Legacy Mode. Select Enhanced to allow the SATA and PATA drives
to be auto-detected and placed in the Native IDE Mode.
Note: The Enhanced mode is supported by the Windows 2000 OS or a later
version.
When the SATA Controller Mode is set to "Enhanced", the following items will be
displayed:
Serial ATA (SATA) RAID Enable
Select Enable to enable Serial ATA RAID Functions. (For a Windows OS environment,
use the RAID driver if this feature is set to Enabled. If set to Disabled, use the Non-
RAID driver. When this feature--SATA RAID is set to Enabled, the next item-"SATA
AHCI Enable" will not be available.) The options are Enabled and Disabled.
SATA AHCI Enable
Select Enable to enable the function of Serial ATA Advanced Host Interface. Be
careful when using this function, which for advanced programmers only. The options
are Enabled and Disabled.
7-4
Chapter 7: BIOS
Primary IDE Master/Slave and Secondary IDE Master/Slave
These settings allow the user to set the parameters of Primary IDE Master/Slave
and Secondary IDE Master/Slave slots. Hit <Enter> to activate the following sub-
menu screen for detailed options of these items. Set the correct confi gurations
accordingly. The items included in the sub-menu are:
Type
Selects the type of IDE hard drive. The options are Auto, (which allows BIOS
to automatically determine the hard drive's capacity, number of heads, etc.), a
number from 1-39 to select a predetermined type of hard drive, CDROM and
ATAPI Removable. The option- "User" will allow the user to enter the parameters
of the HDD installed at this connection. The option-"Auto" will allow BIOS to
automatically confi gure the parameters of the HDD installed at the connection.
Choose the option 1-39 to select a predetermined HDD type. Select CDROM if a
CDROM drive is installed. Select ATAPI if a removable disk drive is installed.
Total Sector/Maximum Capacity
When set to the LBA Mode, the items of Total Sector and Maximum Capacity
will be displayed.
7-5
SUPERSERVER 5025M-4/5025M-i User's Manual
Multi-Sector Transfer
This item allows the user to specify the number of sectors per block to be used
in multi-sector transfer. The options are Disabled, 4 Sectors, 8 Sectors and 16
Sectors.
LBA Mode Control
This item determines if the BIOS will access the Primary IDE Master Device via
the LBA mode. The options are Enabled and Disabled.
32 Bit I/O
This feature allows the user to enable or disable the function of 32-bit data
transfer. The options are Enabled and Disabled.
Transfer Mode
This feature allows the user to select the transfer mode. The options are Standard,
Fast PIO1, Fast PIO2, Fast PIO3, Fast PIO4, FPIO3/DMA1 and FPIO4/DMA2.
Ultra DMA Mode
This feature allows the user to select the Ultra DMA Mode. The options are
This display informs you how much system memory is detected in the system.
Extended Memory
This display informs you how much extended memory is detected in the system.
7-6
Chapter 7: BIOS
7-4 Advanced Setup
Choose Advanced from the Phoenix BIOS Setup Utility main menu with the arrow
keys. You should see the following display. The items with a triangle beside them
have sub menus that can be accessed by highlighting the item and pressing <Enter>.
Options for PIR settings are displayed by highlighting the setting option using the
arrow keys and pressing <Enter>. All Advanced BIOS Setup options are described
in this section.
Boot Features
Access the submenu to make changes to the following settings.
Quick Boot Mode
If enabled, this feature will speed up the POST (Power On Self Test) routine by
skipping certain tests after the computer is turned on. The settings are Enabled
and Disabled. If Disabled, the POST routine will run at normal speed.
Quiet Boot
Set to Enabled to display the Diagnostic Screen during POST. The settings are
Enabled and Disabled.
7-7
SUPERSERVER 5025M-4/5025M-i User's Manual
Power Button Behavior
If set to Instant-Off, the system will power off immediately as soon as the user
hits the power button. If set to 4-sec., the system will power off when the user
presses the power button for 4 seconds or longer. The options are instant-off
and 4-sec override.
Resume On Modem Ring
Select On to "wake your system up" when an incoming call is received by your
modem. The options are On and Off.
Power Loss Control
This setting allows you to choose how the system will react when power returns
after an unexpected loss of power. The options are Last State, Stay off, and
Power On.
Watch Dog
If enabled, this option will automatically reset the system if the system is not
active for more than 5 minutes. The options are Enabled and Disabled.
Summary Screen
This setting allows you to Enable or Disable the summary screen which displays
the system confi guration during bootup.
Memory Cache
Cache Memory
Set to enabled to set the state of Cache Memory. The options are Enabled
and Disabled.
Cache System BIOS Area
This setting allows you to designate a reserve area in the system memory to be
used as a System BIOS buffer to allow the BIOS write (cache) its data into this
reserved memory area. Select "Write Protect" to enable this function, and this
area will be reserved for BIOS ROM access only. Select "Uncached" to disable
this function and make this area available for other devices.
7-8
Chapter 7: BIOS
Cache Video BIOS Area
This setting allows you to designate a reserve area in the system memory to be
used as a Video BIOS buffer to allow the BIOS write (cache) its data into this
reserved memory area. Select "Write Protect" to enable the function and this
area will be reserved for Video BIOS ROM access only. Select "Uncached" to
disable this function and make this area available for other devices.
Cache Base 0-512K
If enabled, this feature will allow the data stored in the base memory area: block
0-512K to be cached (written) into a buffer, a storage area in the Static DRM
(SDROM) or to be written into L1, L2 cache inside the CPU to speed up CPU
operations. Select "Uncached" to disable this function. Select "Write Through" to
allow data to be cached into the buffer and written into the system memory at
the same time. Select "Write Protect" to prevent data from being written into the
base memory area of Block 0-512K. Select "Write Back" to allow CPU to write
data back directly from the buffer without writing data to the System Memory for
fast CPU data processing and operation. The options are "Uncached", "Write
Through", "Write Protect", and "Write Back".
Cache Extended Memory
If enabled, this feature will allow the data stored in the extended memory area
to be cached (written) into a buffer, a storage area in the Static DRM (SDROM)
or written into L1, L2, L3 cache inside the CPU to speed up CPU operations.
Select "Uncached" to disable this function. Select "Write Through" to allow data
to be cached into the buffer and written into the system memory at the same
time. Select "Write Protect" to prevent data from being written into the base
memory area of Block 0-512K. Select "Write Back" to allow the CPU to write
data back directly from the buffer without writing data to the System Memory for
fast CPU data processing and operation. The options are "Uncached", "Write
Through", "Write Protect", and "Write Back".
Discrete MTRR Allocation
If enabled, MTRRs (-Memory Type Range Registers) are confi gured as distinct,
separate units and cannot be overlapped. If enabled, the user can achieve
better graphic effects when using a Linux graphic driver that requires the write-
combining confi guration with 4GB or more memory. The options are Enabled
and Disabled.
7-9
SUPERSERVER 5025M-4/5025M-i User's Manual
PCI Confi guration
Access the submenu to make changes to the following settings for PCI devices.
Onboard GLAN1/GLAN2 (Gigabit- LAN) OPROM Confi gure
Enabling this option provides the capability to boot from GLAN. The options
are Disabled and Enabled.
.
Reset Confi guration Data
If set to Yes, this setting clears the Extended System Confi guration Data- (ESCD)
area. The options are Yes and No.
Frequency for PCIX#1-#2/SCSI
This option allows the user to change the bus frequency for the devices installed
in the slots indicated. The options are Auto, PCI 33 MHz, PCI 66 MHz, PCI-X
66 MHz, PCI-X 100 MHz, and PCI-X 133 MHz.
Frequency for PCIX#5-#6
This option allows the user to change the bus frequency of the devices installed
in the slots indicated. The options are Auto, PCI 33 MHz, PCI 66 MHz, PCI-X
66 MHz, PCI-X 100 MHz, and PCI-X 133 MHz.
PCI Devices, Slots #1-#4
Access the submenu for each of the settings above to make changes to the
following:
Option ROM Scan
When enabled, this setting will initialize the device expansion ROM. The
options are Enabled and Disabled.
Enable Master
This setting allows you to enable the selected device as the PCI bus master.
The options are Enabled and Disabled.
Latency Timer
This setting allows you to set the clock rate for Bus Master. A high-priority,
high-throughout device may benefi t from a greater Clock rate. The options
are Default, 0020h, 0040h, 0060h, 0080h, 00A0h, 00C0h, and 00E0h. For
Unix, Novell and other Operating Systems, please select the option: other.
If a drive fails after the installation of a new software , you might want to
change this setting and try again. Different OS requires different Bus Master
clock rate.
7-10
Chapter 7: BIOS
Large Disk Access Mode
This setting determines how large hard drives are to be accessed. The options
are DOS or Other (for Unix, Novelle NetWare and other operating systems).
Advanced Chipset Control
Access the submenu to make changes to the following settings.
*Warning: Take Caution when changing the Advanced set-
tings. Incorrect values entered may cause system malfunction.
Also, a very high DRAM frequency or incorrect DRAM timing
may cause system instability. When this occurs, revert to the
default setting.
Onboard GBE LAN
This feature allows the user to enable this function to allow the BIOS to disable
Gigabit LAN. The options are: Enabled and Disabled.
Route Port 80h to
This feature allows the user to decide which bus to send the debug information
to. The options are PCI and LPC.
Clock Spectrum Feature
If "Enabled", BIOS will monitor the level of Electromagnetic Interference caused
by the components and will attempt to decrease the interference whenever
needed. The options are Enabled and Disabled.
USB Function
If set to Enabled to enable the USB function when the user keys in a value to
a USB item. The options are Enabled and Disabled.
Legacy USB Support
This setting allows you to enable support for the Legacy USB devices. The
settings are Enabled and Disabled.
7-11
SUPERSERVER 5025M-4/5025M-i User's Manual
Advanced Processor Options
Access the submenu to make changes to the following settings.
Hyper-threading
This setting allows you to Enable or Disable the function of hyper-threading.
Enabling hyper-threading results in increased CPU performance. (Applicable for
the XP systems.)
Adjacent Cache Line Prefetch
The CPU fetches the cache line for 64 bytes if Disabled. The CPU fetches both
cache lines for 128 bytes as comprised if Enabled.
Thermal Management 2
If enabled, this feature allows you to select between Thermal Manager 1 and Thermal
Manager 2. The options are Disable or Enable. Note: This feature is available
only when it is supported by the CPU.)
Machine Checking
Enable to allow the operating system to debug a system crash after a reset. The
options are Disabled and Enabled.
C1E Support
Set to Enabled to enable the Enhanced Halt State. The options are Enabled
and Disabled. (*Note: This feature is available only when it is supported by the
CPU.)
No Execute Mode Memory Protection
Enable this feature to enable the functionality of Execute Disable Bit and allow the
processor to classify areas in the memory where an application code can execute
and where it cannot, and thus, preventing a worm or a virus from inserting and
creating a fl ood of codes that will overwhelm the processor or damage the system
during an attack. (*Note: this feature is available when your OS and your CPU
support the function of Execute Disable Bit.) The options are Disabled and Enabled.
(Note: For more information regarding hardware/software support for this function,
please refer to Intel's and Microsoft's web sites.)
Frequency Ratio
This feature allows the user to select the ration for the internal frequency multiplier
of the CPU. The options are Default, X14, X15, and X16.
Processor Power Management
This feature allows the user to determine the processor power management
mode. The options are Disabled and C States Only. If set to Disabled, C States
and GV1/GV3 are disabled. If set to C States only, the processor power will be
controlled through CPU power states in the ACPI setting.
7-12
Chapter 7: BIOS
I/O Device Confi guration
Access the submenu to make changes to the following settings.
KBC Clock input
This setting allows you to set the clock frequency for the Keyboard Clock. The
options are 6MHz, 8MHz, 12 MHz and 16MHz.
Serial Port A
This setting allows you to decide how Serial Port A is controlled. The options
are Enabled (user defi ned), Disabled, and Auto (BIOS- or OS- controlled).
Base I/O Address
Select the base I/O address for Serial Port A. The options are 3F8, 2F8,
3E8 and 2E8.
Interrupt
Set the Interrupt for Serial Port A. The options are IRQ3 and IRQ4.
Serial Port B
This setting allows you to decide how Serial Port B is controlled. The options
are Enabled (user defi ned), Disabled, and Auto (BIOS- or OS- controlled).
Mode
This feature allows the user to set the mode for Serial Port B. The options
are Normal and IR.
Base I/O Address
Select the base I/O address for Serial Port B. The options are 3F8, 2F8,
3E8 and 2E8.
Interrupt
Set the Interrupt for Serial Port B. The options are IRQ3 and IRQ4.
Parallel Port
This setting allows you to assign control of the Parallel Port. The options are
Enabled (user defi ned), Disabled, and Auto (BIOS- or OS- controlled).
Base I/O Address
Select the base I/O address for the Parallel Port. The options are 378, 278,
and 3BC.
Interrupt
Set the Interrupt for the Parallel Port. The options are IRQ5 and IRQ7.
7-13
SUPERSERVER 5025M-4/5025M-i User's Manual
Mode
This feature allows the user to set the mode for the Parallel Port. The options
are Output Only, Bi-Directional, EPP and ECP.
DMA Channel
This feature allows the user to select the DMA Channel for the Parallel Port.
The options are DMA1 and DMA3.
Floppy Disk Controller
This setting allows you to assign control of the fl oppy disk controller. The options
are Enabled (user defi ned), Disabled, and Auto (BIOS and OS controlled).
Base I/O Address
Select the base I/O address for the parallel port. The options are Primary and
Secondary.
DMI Event Logging
Access the submenu to make changes to the following settings.
Event Log Validity
This is a display to inform you of the event log validity. It is not a setting.
Event Log Capacity
This is a display to inform you of the event log capacity. It is not a setting.
View DMI Event Log
Highlight this item and press <Enter> to view the contents of the event log.
Event Logging
This setting allows you to Enable or Disable event logging.
ECC Event Logging
This setting allows you to Enable or Disable ECC event logging.
Mark DMI Events as Read
Highlight this item and press <Enter> to mark the DMI events as read.
Clear All DMI Event Logs
Select Yes and press <Enter> to clear all DMI event logs. The options are Yes
and No.
7-14
Chapter 7: BIOS
Console Redirection
Access the submenu to make changes to the following settings.
COM Port Address
This item allows you to specify to redirect the console to Onboard COM A or
Onboard COM B. This setting can also be Disabled.
BAUD Rate
This item allows you to select the BAUD rate for console redirection. The options
are 300, 1200, 2400, 9600, 19.2K, 38.4K, 57.6K and 115.2K.
Console Type
This item allows you to choose from the available options to select the console
type for console redirection. The options are VT100, VT100,8bit, PC-ANSI, 7bit,
PC ANSI, VT100+,
VT-UTF8.
Flow Control
This item allows you to choose from the available options to select the fl ow control
for console redirection. The options are: None, XON/XOFF, and CTS/RTS.
Console Connection
This item allows you to decide how Console Redirection is to be connected:
either Direct or Via Modem.
Continue CR after POST
Choose whether to continue with console redirection after the POST routine.
The options are On and Off.
Hardware Monitoring
7-15
SUPERSERVER 5025M-4/5025M-i User's Manual
This feature allows the user to set the PCI-E Jitter Tolerance Level. The
options are: 4 to 12.
PCI-E Port A Device 2/PCI-E Port B Device 4
If enabled, the feature allows you to set the device selected to be compliant
with the PCI-Express Compliance 1.0 Mode. The options are: Disabled,
Enabled and Auto.
Hardware Monitor Logic
CPU Temperature Threshold
This option allows the user to set a CPU temperature threshold that will activate
the alarm system when the CPU temperature reaches this pre-set temperature
threshold. The options are 75
Highlight this and hit <Enter> to see the data for the following items:
Temperature: This items displays the Temperature status of the following items.
o
C, 80oC, 85oC and 90oC.
CPU Temperature
System1 Temperature
System2 Temperature
Fan Speed Control Modes
This feature allows the user to decide how the system controls the speeds of the
onboard fans. If the option is set to "3-pin fan", the fan speed is controlled based
upon the CPU die temperature. When the CPU die temperature is higher, the fan
speed will be higher as well. If the option is set to "4-pin", the fan speed will be
controlled by the Thermal Management Settings pre-confi gured by the user at this
feature. Select "3-pin" if your chassis came with 3-pin fan headers. Select "4-pin" if
your chassis came with 4-pin fan headers. Select "Workstation" if your system is
used as a Workstation. Select "Server" if your system is used as a Server. Select
"Disable" to disable the fan speed control function to allow the onboard fans to run
at the full speed (12V) at all time. The Options are: 1. Disable, 2. 3-pin (Server),