ZyXEL USG 20. Supported network protocols: HTTP/HTTPS, Data link protocols: TCP/IP, Routing protocols: SNMP. Networking features: Gigabie Ethernet, Cabling technology: 10/100/1000Base-T(X). Dimensions (WxDxH): 215.75 x 140 x 33 mm, Weight: 380 g. Power supply: 15 W. Operating temperature range (T-T): 0 - 40 °C, Storage temperature range (T-T): 0 - 40 °C, Operating relative humidity range: 20 - 95 %