Acomdata 509 Hard Drive Enclosure. Hard drive interface: USB 2.0. Minimum processor: 233 MHz, Minimum system requirements: Windows XP/2000/Me/98SE Mac OS 91/S X. Operating relative humidity range: 5 - 95 %, Operating temperature range (T-T): 5 - 35 °C. Colour of product: Grey. Dimensions (WxDxH): 205 x 116 x 35 mm, Weight: 780 g