48-port 10/100/1000 Gigabit Smart Switch including 4 Combo 1000BaseT/SFP - 44 x 10/100/1000Mbps Auto-Negotiating Ports - 4 x Combo 1000BaseT/Mini-GBIC SFP ports - Jumbo frames up to 13000Bytes - 16K MAC addresses - 802. 3az Energy Efficient Ethernet (EEE) by port power saving in idle mode - dlink|green 3.
