HP D530 HP Compaq Business Desktop d500 Service Reference Guide, 5th Edition - Page 53

Serial and Parallel ATA Drive Guidelines and Features, 4.1 PATA and SATA Device Information

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4 Serial and Parallel ATA Drive Guidelines and Features 4.1 PATA and SATA Device Information Characteristic Number of pins/conductors in data cable Number of pins in power cable Maximum data cable length Data interface voltage differential Drive motor voltages Jumpers for configuring drive Data transfer rate PATA 40/80 4 18 in (45.7 cm) 5 V 5 V, 12 V Required up to 100 MB/s SATA 7/7 15 39.37 in (100 cm) 600 mV 3.3 V, 12 V N/A 150 MB/s 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. Pin Number Usage P1 Ground P2* A+ P3* A- P4 Ground P5** B- P6** B+ P7 Ground *P2 and P3 differential signal pair **P5 and P6 differential signal pair Device Plug Ground Transmit data Transmit data Ground Receive data Receive data Ground Host Plug Ground Receive data Receive data Ground Transmit data Transmit data Ground Service Reference Guide, d500 336492-005 4-1

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Service Reference Guide, d500
336492-005
4–1
4
Serial and Parallel ATA Drive Guidelines and
Features
4.1
PATA and SATA Device Information
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.
Characteristic
PATA
SATA
Number of pins/conductors in data cable
40/80
7/7
Number of pins in power cable
4
15
Maximum data cable length
18 in (45.7 cm)
39.37 in (100 cm)
Data interface voltage differential
5 V
600 mV
Drive motor voltages
5 V, 12 V
3.3 V, 12 V
Jumpers for configuring drive
Required
N/A
Data transfer rate
up to 100 MB/s
150 MB/s
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