HP Compaq dx6050 MT - 4 Serial and Parallel ATA Drive Guidelines and Features; PATA and SATA Device Information; ATA Cables; SATA Data Cable

Service Reference Guide, d300, dx6050 319865-008 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