Trendnet 4-port High Speed USB Hub. Data transfer rate: 480 Mbit/s. Weight: 10 g. Operating temperature range (T-T): 0 - 45 °C, Storage temperature range (T-T): -20 - 70 °C, Operating relative humidity range: 0 - 90 %. Safety: FCC, CE. Dimensions (WxDxH): 80 x 35 x 10 mm, Compliance industry standards: OHCI, EHCI, Power requirements: 5V DC, 2A