FOXCONN E124936 Serial ATA 381868-004 10013908 Sata II AWM 2725 3Gpbs VW-1 80C 30V 7-Pin Sata Cable - 13" Long, 1 In Stock, Pulled From Working Computers, 90 Day Warranty

SATA I  and SATA II

First there was a Serial ATA organization working group that authored the SATA 1.0a specification, which supports a first generation (Gen 1) PHY at 1.5Gbps. After this Gen 1 effort, the second generation (Gen 2) effort defined a whole series of optional features to enhance and improve the first SATA specification. One of these enhanced optional features was the Gen 2 PHY, which has double the speed of first generation and is 3Gbps.

This Gen 2 PHY began to be called SATA II by the press in the market. Some of the other key enhanced SATA features were published by the SATA II working group in several specifications and included Native Command Queuing (NCQ), Port Multiplier, Staggered Spin Up, Port Selector, External SATA, and Hot Plug.