CoolMax HD-360B-U2 USB 2.0 3.5" Aluminum External Hard Drive Enclosure 3.5-inch USB 2.0 external hard drive enclosure for Mac and PC Up to 480 Mbps transfer rate Compact design for easy portability; anti-shock design protects hard disk from damage Includes DC 12-volt transformer 32 x 220 x 120 millimeters (HxWxL)