HP Compaq dc7800 Series User Manual

Technical Reference Guide www.hp.com 5-3
Input/Output Interfaces
5.3 PATA Interface
The USDT system board includes a SATA-to-PATA bridge and slim IDE connector that supports
an IDE-type optical disk drive. The pinout for this connector is listed in Table 5-2
The 44-pin slim IDE connector is shown in the figure below.
Figure 5-2. 44-pin Slim IDE Connector (P21on system board).
Table 5-2.
44-Pin Slim IDE Connector Pinout
Pin Signal Pin Signal Pin Signal Pin Signal
1 RESET# 2 GND 23 DIOW# 24 GND
3 DD7 4 DD8 25 DIOR# 26 GND
5 DD6 6 DD9 27 IORDY 28 CSEL
7 DD5 8 DD10 29 DMACK# 30 GND
9DD4 10DD1131INTRQ 32NC
11 DD3 12 DD12 33 DA1 34 PDIAG#
13 D D 2 14 D D 13 35 D A 0 3 6 D A 2
15 D D 1 16 D D 14 37 C S 0 # 3 8 CS 1 #
17 DD0 18 DD15 39 IDEACT# 40 GND
19 G N D 20 Key ( n o pi n ) 41 5 V 42 5V
21 D MA RQ 22 G ND 43 GND 44 Res er ve d
2
44
43
1

HP Compaq dc7800 Series Specifications

General

Processor	Intel Core 2 Duo, Intel Pentium Dual-Core, Intel Celeron
Chipset	Intel Q35 Express
Memory	Up to 8 GB DDR2 SDRAM
Audio	Integrated High Definition Audio
Form Factor	Ultra-slim desktop, Small form factor, Convertible minitower
Storage	80GB to 500GB SATA HDD
Graphics	Integrated Intel Graphics Media Accelerator 3100
Optical Drive	DVD-ROM, DVD+/-RW
Network	Integrated Gigabit Network Connection
Ports	USB 2.0, VGA, serial, parallel, audio in/out
Operating System	Windows Vista, Windows XP, FreeDOS
Expansion Slots	1 low-profile PCI, 1 low-profile PCI Express x16
Power Supply	240W