Compatible with 2 5 3 5 5 25 ide and sata drives 6tb max and optical simultaneously sata iii 6gbps sata gen2i 3gbps gen1i 1 5gbps compliant operates with one ide and one sata hdd simultaneously plug and play no drivers needed supports usb 3 0 hi speed backward compatible with usb 2 0 and usb 1 1 connectors dual head ide connector 40pin and 44pin plus sata iii usb mini b power jack