Overview: In line with the SATA I & SATA II specifications SATA II transfer rate of 3 Gbps The 4P power output 12V 5V/2 A No need to drive, easy to install Compatible with Win 98/ME/2000/XP/VISTA/WIN 7 / MAC OS 9.X/10.X / Linux Specification:3.94in*3.74in*0.98in 2.48oz