HP Compaq dc7100 DT User Manual

4–2 361288-003 Service Reference Guide, dc7100
Serial and Parallel ATA Drive Guidelines and Features
4.2 ATA Cables
4.2.1 SATA Data Cable
The SATA data cable is a thin, 7-pin cable designed to transmit data for only a single drive. As
shown in the table, each cable has 3 grounds, and 4 transmit/receive pins.
SATA data cables are susceptible to damage if overflexed. Never crease a SATA data cable and
never bend it tighter than a 30 mm (1.18 in) radius.
4.2.2 SATA Power Cable
Pin Number Usage Device Plug Host Plug
P1 Ground Ground Ground
P2* A+ Transmit data Receive data
P3* A- Transmit data Receive data
P4 Ground Ground Ground
P5** B- Receive data Transmit data
P6** B+ Receive data Transmit data
P7 Ground Ground Ground
*P2 and P3 differential signal pair
**P5 and P6 differential signal pair
Pin Usage Notes Pin Usage Notes
P1 V3.3 3.3 V power P9 V5 5 V power
P2 V3.3 3.3 V power P10 Ground
P3 V3.3 3.3 V power P11 Reserved
P4 Ground P12 Ground
P5 Ground P13 V 12 12 V power
P6 Ground P14 V12 12 V power
P7 V5 5 V power P15 V12 12 V power
P8 V5 5 V power

HP Compaq dc7100 DT Specifications

General

Processor Speed	Up to 3.8 GHz
Chipset	Intel 915G
Memory	Up to 4 GB DDR2 SDRAM
Operating System	Windows XP Professional
Form Factor	Desktop
Processor	Intel Pentium 4
Storage	40 GB to 160 GB SATA
Graphics	ATI Radeon X300 SE
Optical Drive	DVD-ROM
Audio	Integrated audio
Network	Integrated Gigabit Ethernet
Expansion Slots	1 PCI Express x16
Ports	1 Parallel, 1 Serial, 2 PS/2, 1 VGA