Nortel DR4001B80E5. Maximum data transfer rate: 0 Gbit/s. Switch type: Managed. Weight: 4.99 kg. Safety: UL 60950, TUV/GS (EN 60 950), CSA 22.2 NO. 60950. Operating relative humidity range: 10 - 95 %, Operating temperature range (T-T): 0 - 50 °C, Storage temperature range (T-T): -20 - 70 °C