Qty 1 Piece Color Silver Material PVC Type For Laptops Compatible Model Laptop computer with USB 3.0 / USB 2.0 port Application External USB 3.0 CD-ROM or external USB 3.0 hard disk Other Features USB 3.0 backward compatible with USB 2.0; Support 5Gbps data transmission rate; Support Window 2K / XP / 2003 / Vista / 7 Linux Mac 10 OS system; Support 1.5Gbps SATA-I interface; Support up to 3.0Gbps SATA-II interface; Support power saving sleep mode USB 3.0 mini type interface with 3.5 x 1.3mm DC interface; Aluminum alloy housing material; Suitable for 12.7mm SATA movement and 12.7mm SATA hard-disk cartridge Packing List 1 x USB 3.0 DVD-RW drive 1 x USB data cable (55cm) 1 x Power cable (55cm) 1 x Chinese / English manual