Hornettek  HD-308U2SBLK Hover 3.5-Inch USB 2.0 Dual Fan Stylish External Enclosure - Cool Black Universal fitting for 3.5" SATA I / II /III HDD Back panel Power ON/OFF switch Complies with the USB-IF specifications for USB 2.0 Operates at High USB 2.0 (480Mbps) or Full (12Mbps) speed. Power: 24W AC Adapter UL/CSA/TUV/CE AC input: 100-240 VAC. (47Hz~63Hz) DC output: 12V / 2A Material: ABS 94V0 shell (Aluminum Cover and internal metal Shielding)