Make use of your existing four-pair CAT5 copper cabling with this Amer Networks SGD5 5-Port desktop switch to give your network the boost it needs. Video streaming, high-speed backbone connections, and bandwidth intensive applications become possible when you upgrade to this gigabit over copper switch. The SGD5 supports full/half-duplex for 10/100 Mbps and full duplex for 1000 Mbps, auto-negotiation for speed and duplex mode, and back pressure flow control for half-duplex to ensure your network is stable and reliable.