The serial ATA, or SATA computer bus, is a storage-interface for connecting host bus adapters to mass storage devices such as hard disk drives and optical drives. The following diagram shows the 7-pin Serial ATA (SATA) Cable Diagram and Connector.7-pin sata connector

Pin#
1
2
3
4
5
6
7
Function
Ground
A+ (Transmit)
A− (Transmit)
Ground
B− (Receive)
B+ (Receive)
ground


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