Dlink DGS-1510-52X/A1A / Wireline standards: 802.1p, 802.1q, 802.3 (10BASE-T) Ethernet, 802.3ab (1000BASE-T) Ethernet, 802.3ad (link aggregation), 802.3ae (10GBASE-LR), 802.3u (100BASE-TX) Ethernet, 802.3x (full duplex) / Transmission speed: 1000 Mbps / Ports and interfaces: 48 ports 10/100/1000 Mbit / s, 4 ports 10G SFP + / Noise level: 45.8 dB / Product weight: 2.4 kg