Compaq dx2250 HP Compaq dx2250 Business PC, Service Reference Guide, 1st Editi - Page 53
Serial and Parallel ATA Drive Guidelines and Features, SATA Hard Drives, SATA Data Cable
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5 Serial and Parallel ATA Drive Guidelines and Features NOTE: Serial ATA = SATA Parallel ATA = PATA HP only supports the use of SATA hard drives on these models of computer. No PATA drives are supported. SATA Hard Drives Serial ATA Hard Drive Characteristics Number of pins/conductors in data cable Number of pins in power cable Maximum data cable length Data interface voltage differential Drive voltages Jumpers for configuring drive Data transfer rate 7/7 15 39.37 in (100 cm) 400-700 mV 3.3 V, 5 V, 12 V N/A 3.0 Gb/s 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. ENWW SATA Hard Drives 47
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