3com SuperStack 3 Switch 3300 24 10/100. Supported data transfer rates: 10/100 Mbps. MAC address table: 48000 entries. Copper ethernet cabling technology: typr 5 network cable. Management protocols: SNMP,telnet. Operating relative humidity range: 10 - 90 %, Operating temperature range (T-T): 5 - 45 °C