Linksys EtherFast 3124 24-Port 10/100 Ethernet Switch for Europe. Switching protocols: Ethernet, Data link protocols: Ethernet, Fast Ethernet. Operating relative humidity range: 20 - 95 %, Operating temperature range (T-T): 0 - 50 °C. LED indicators: Link activity. Data transfer rate: 100 Mbit/s, Dimensions (WxDxH): 430 x 180 x 45 mm, Connectivity technology: Wired