TP-LINK 24-Port Gigabit L2 Fully Managed Switch with 4 SFP Slots . Maximum data transfer rate: 1 Gbit/s, Supported data transfer rates: 10/100/1000 Mbps. Switch type: Managed. Operating relative humidity range: 10 - 90 %, Operating temperature range (T-T): 0 - 40 °C, Storage temperature range (T-T): -40 - 70 °C. Dimensions (WxDxH): 440 x 230 x 44 mm