Cherry G84-4100. Device interface: USB+PS/2, Purpose: PC/server, Recommended usage: Office. Cable length: 1.75 m. Keyboard dimensions (WxDxH): 282 x 132 x 27 mm, Keyboard weight: 400 g. Operating temperature range (T-T): 0 - 50 °C, Storage temperature range (T-T): -20 - 65 °C. Certification: c-tick, UL, VCCI, CE, FCC, VDE, BSMI