Each major revision of the Serial ATA interface specification has doubled the maximum data transfer rate. The latest SATA Revision 3.0 allows for data transfer speeds of up to 6 Gbps. 
While the cables for all three revisions appear to be similar and will physically fit into the connectors on all SATA drives and controllers, the higher data transfer rate of SATA 6 Gbps requires higher quality materials and closer tolerances than the previous two revisions required. 
STC  SATA 6 Gbps cables are certified to provide maximum speeds from your SATA system, up to 6 Gbps when used with equivalent devices and controllers. 

Technical Specifications

· SATA revision 3.0 (aka SATA III) provides up to 6 Gbps data throughput

· Straight-through connector on one end, 90-degree connector on the other

· Includes locking latch on each end of the cable to ensure it doesn't work itself loose

· Backwards compatible with SATA revision 1 and 2 (aka SATA I and SATA II)

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