Mediasonic HND1-SU3 Black USB 3.0 Single docking 2.5 / 3.5 SATA HDD support USB 3.0 Sata 3 6.0 Gbps & UASP Dimensions: 5.71 x 3.03 x 2.26 Power: Input: 100 ~ 240V, 50~60Hz, 0.7A Output: 12V, 2A, 24W Over current protection, over voltage protection Operating Systems Supported: Windows 7 / 8.1 Mac OSX 10.8 or later Weight: 0.49 lb.