HP Compaq dc7900 Service and Maintain
Illustrated Parts & Service Map
HP Compaq dc7900 Ultra Slim Desktop
Business PC
© 2008, 2009, 2010 Hewlett-Packard Development Company, L.P. The infor-
mation contained herein is subject to change without notice. HP shall not be
liable for technical or editorial errors or omissions contained herein. Intel,
Pentium, Intel Inside, and the Intel logo are trademarks or registered trade-
tries.
Document Number 506595-003. 3rd Edition June 2010.
Key Specifications
Processor Type Intel Celeron, Pentium Dual-Core, Core2 Duo, Core2 Quad
RAM Type DDR2-SODIMMs, PC2 6400 (800 MHz) non-ECC
Maximum RAM Supported 4 GB
Expansion Slots PCI Express Mini Card
Graphics Adapter Integrated Intel GMA 3200 graphics
Drive Support • 1 hard drive, 2.5-inch
I/O Interfaces USB 2.0 (8), USB 2.0, internal on system board (2), RJ-45 (1),
Spare Parts
marks of the Intel Corporation and its subsidiaries in the U. S. and other coun-
• 1 Slimline optical
• 1 mini PCIe solid state drive
front and rear audio jacks (2 each), PS/2 ports (2), VGA/DVID connector
Cable and accessory
1 Optical drive cable/connector 499201-001
* Cable cover 451397-001
* Not shown
Keyboards (not illustrated)
PS/2, Basic
USB, Basic
USB SmartCard
Arabic -171 LA Spanish -161
Belgian -181 Norwegian -091
BHCSY -B41
Brazilian Portuguese -201 Portuguese -131
Czech -221 Romanian -271
Danish -081
Finnish -351 Saudi Arabia* -DE1
French -051 Slovakian -231
French Canadian -121
German -041 Spanish -071
Greek -151 Swedish -101
Hebrew -BB1 Swiss -111
Hungarian -211 Taiwanese -AB1
International -B31 Thai -281
International English -L31
Italian -061 U.S. -001
Japanese -291 U.K. -031
*For 435385-xxx only
435302-xxx
435382-xxx
435385-xxx
People’s Republic of China
Russian -251
South Korea -KD1
Turkish -141
-AA1
System Unit
1 Access panel 497738-001
2 Front bezel 451388-001
3 Chassis not spared
4 AC adapter, 135W 482133-001
* Stand 451396-001
* Bezel blank 451394-001
* Not shown
Mass Storage Devices
1 DVD-ROM drive 494353-001
* DVD±RW and CD-RW Super Multi Double-Layer Combo Drive with
LightScribe
* DVD±RW and CD-RW Combo Drive 485604-001
* 250 GB, 7200 RPM hard drive 497730-001
2 160 GB, 7200 RPM hard drive 497729-001
* 80 GB hard drive 497728-001
485603-001
dc7900 Illustrated Parts & Service Map, USDT Chassis 506595-003 page 1
Standard and Optional Boards
System boards with thermal grease, alcohol pad, and CPU socket cover
1 System board 462433-001
* System board, excludes ES/CS 490631-001
Memory modules (SODIMM, PC2-6400, CL6)
*4 GB
*2 GB
21 GB
* 512 MB
Other boards
* Quadro NVS295 256-MB PCIe graphics card 519298-001
* 802.11a/b/g/n WLAN module (include card, antenna, cable, and screw) 502482-001
Intel Celeron Processors with alcohol pad and thermal grease
* 450, 2.2 GHz, 512-KB cache, single core 508256-001
* 440, 2.0 GHz, 512-KB cache, single core 449166-001
* E1500, 2.2 GHz, 512-MB cache, dual core 516899-001
* E1400, 2.0 GHz, 512-MB cache, dual core 491574-001
* E1200, 1.6 GHz, 512-MB cache, dual core 468589-001
Intel Pentium Dual Core Processors with alcohol pad and thermal grease
* E5400, 2.7 GHz, 2-MB L2 cache 531989-001
* E5200, 2.5 GHz, 2-MB L2 cache 503382-001
* E2220, 2.4 GHz, 1-MB L2 cache 480714-001
* E2200, 2.2 GHz, 1-MB L2 cache 465216-001
Intel Core 2 Duo Processors with alcohol pad and thermal grease
* E8600, 3.33 GHz, 6-MB L2 cache 497732-001
* E8500, 3.16 GHz, 6-MB L2 cache 466170-001
* E8400, 3.00 GHz, 6-MB L2 cache 509554-001
* E8300, 2.83 GHz, 6-MB L2 cache 466168-001
* E7500, 2.93 GHz, 3-MB L2 cache 531988-001
* E7400, 2.80 GHz, 3-MB L2 cache 508255-001
* E7300, 2.66 GHz, 3-MB L2 cache 500134-001
* E7200, 2.53 GHz, 3-MB L2 cache 490507-001
* E5300, 2.60 GHz, 2-MB L2 cache 516900-001
* Not shown
497739-001
451400-001
570027-001
571246-001
Miscellaneous Parts
1 Chassis fan with duct 451392-001
2 Chassis fan, rear 499202-001
3 Internal speaker 447085-001
4 Heatsink with alcohol pad and factory-applied thermal grease 490814-001
* USB powered speakers 466618-001
* Mouse, PS2, optical 417966-001
* Mouse, optical 390938-001
* Mouse, laser 459821-001
* Rubber feet, snap in 499204-001
* Hood sensor 392417-001
*Not shown
System Board
System Board Connectors and Jumpers (position of some untitled
components may vary in location)
E49 Password P11 Auxiliary audio connector
J9 Stacked RJ-45/Dual USB P54 Primary serial port
J10 Quad stacked USB P60 First SATA connector
J64 Display port connector P61 Second SATA connector
J68
Stacked keyboard/mouse connector
J69 Video connector P150
J70 Primary single USB port P151
J71 Secondary single USB port P160
J72 Microphone jack SW1 System front power button
J75 Headphone jack SW50 Clear CMOS
J78 Double stacked line-out/line-in XBT1 Real-time-clock battery
J103 DC power input XMM1 DIMM 1
J105 PCIe Mini Card XMM3 DIMM 3
P6 Internal speaker XU1 Processor
P9 Chassis fan
P125 Hood sensor
Media reader
ReadyBoost
SATA power header
dc7900 Illustrated Parts & Service Map, USDT Chassis 506595-003 page 2
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