ZyXEL ES-3148 - 48-port Managed L2+ Fast Ethernet Switch. Maximum data transfer rate: 1 Gbit/s, Supported data transfer rates: 10/100/1000 Mbps, Packet transfer speed: 148800pps. MAC address table: 16000 entries. Switch layer: L2+, Switch type: Managed. Copper ethernet cabling technology: 10Base-T, 100Base-TX, 1000Base-TX. Weight: 4200 g