Serial and Parallel ATA Drive Guidelines and Features

4.2 SATA Hard Drive Cables

4.2.1 SATA Data Cable

Always use an HP approved SATA 3.0 Gb/s cable as it is fully backwards compatible with the SATA 1.5 Gb/s drives.

Current HP desktop products ship with SATA 3.0 Gb/s hard drives.

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.

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.

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

4.2.2 SATA Power Cable

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

Ground

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

4–2

433612-001

Service Reference Guide, dc7700