D-Link Stackable 48-Port 10/100 Switch + 2 combo Gib copper/SFP uplinks. Maximum data transfer rate: 1 Gbit/s, Switching capacity: 13.6 Gbit/s. MAC address table: 8000 entries. Copper ethernet cabling technology: 10BASE-T, 100BASE-TX, 1000BASE-T. Management protocols: Telnet, RMON, SNMPv1/v2c/v3, Switching protocols: IGMP, Data link protocols: Ethernet, Fast Ethernet, Gigabit Ethernet. Weight: 4.4 kg