Switch ST3105GC provides 5 10/100/1000Mbps Auto-Negotiation RJ45 ports. All ports support Auto MDI/MDIX function, eliminating the need for crossover cables or Uplink ports. This Switch provides you with a low-cost, easy-to-use, high-performance, seamless and standard upgrade to improve your old network to a 1000Mbps network. It will boost your network performance with up to 2000Mbps full duplex data transfer speed.5*10/100/1000Mbps RJ45 ports, Auto-Negotiation & Auto MDI/MDIX IEEE 802.3x flow control for Full Duplex mode and backpressure for Half Duplex mode 10Gbps switching fabric capacity/backplane bandwidth Support 9216-byte jumbo packet length forwarding at wired speed Supports 2K MAC address table, MAC address auto-learning & auto-aging Green Ethernet technology for effective power saving LED indicators for simple diagnostics and management Plug and play ,no configuration required