Aten 4-Port USB 2.0 Peripheral Switch. Data transfer rate: 480 Mbit/s. Weight: 97 g. Operating temperature range (T-T): 5 - 40 °C, Storage temperature range (T-T): -20 - 60 °C, Operating relative humidity range: 0 - 80 %. Interface: USB, Dimensions (WxDxH): 102 x 75.5 x 23 mm. Compatible operating systems: Windows 2000, Windows XP, Windows Vista, Mac, FreeBSD