US Robotics USR997724A Courier 24-Port Gigabit Smart Switch. Maximum data transfer rate: 1 Gbit/s, Supported data transfer rates: 10/100/1000 Mbps. Switch type: Managed. Copper ethernet cabling technology: 1000Base-TX, 100Base-TX. Package weight: 4.2 kg. Operating relative humidity range: 10 - 90 %, Operating temperature range (T-T): 0 - 40 °C, Storage temperature range (T-T): -10 - 70 °C