The Stonet ST3116GS Gigabit Ethernet Rackmount Switch provides 16 10/100/1000Mbps Auto-Negotiation RJ45 ports .It is ideal for the small and medium office use. All ports support Auto MDI/MDIX function, eliminating the need for crossover cables or uplink ports. The 16 Port Gigabit Ethernet Rackmount Switch provides you with high-performance, seamless and standard upgrade to improve your old network to a 1000Mbps network.16 10/100/1000M RJ45 ports. Supports 8K MAC address self-learning and auto MDI/MDIX Green Ethernet technology link down power saving and link on various cable length power saving Supports 2K MAC address 32 Gbps Switching Capacity Fanless design to make sure it works quietly without disturbing your family Desktop , expendable to rachmountable Plug and play, no configuration required