HP 5850 Service Reference Guide: HP Compaq dc5850 Business PC - Page 62
SATA Hard Drive Cables, SATA Data Cable, SATA Power Cable
UPC - 844844844303
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SATA Hard Drive Cables 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 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 SATA Power Cable Pin Usage P1 V3.3 P2 V3.3 P3 V3.3 P4 Ground P5 Ground P6 Ground P7 V5 P8 V5 Notes 3.3 V power 3.3 V power 3.3 V power 5 V power 5 V power Pin Usage Notes P9 V5 5 V power P10 Ground P11 Ground P12 Ground P13 V12 12 V power P14 V12 12 V power P15 V12 12 V power 50 Chapter 5 Serial and Parallel ATA Drive Guidelines and Features