Targus Ultra Mini 4-Port USB Hub. Weight: 85 g. Operating temperature range (T-T): 5 - 35 °C. Dimensions (WxDxH): 95 x 40 x 20 mm, Compliance industry standards: CE, FCC, Class A and B. Minimum system requirements: 1 USB v1.1, Compatible operating systems: Windows 98/2000/Me/XP or Mac