ZyXEL GS-3012F 12-port Managed Layer 2 Gigabit Fiber Ethernet Switch. Maximum data transfer rate: 1 Gbit/s, Supported data transfer rates: 10/100/1000 Mbps, Switching capacity: 24 Gbit/s. MAC address table: 16000 entries. Switch type: Managed. Weight: 3.1 kg. Operating relative humidity range: 10 - 90 %, Operating temperature range (T-T): 0 - 45 °C, Storage temperature range (T-T): -25 - 70 °C