The Stonet ST3124GS Gigabit Ethernet Rackmount Switch provides 24 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 24 Port Gigabit Ethernet Rackmount Switch provides you with high-performance, seamless and standard upgrade to improve your old network to a 1000Mbps network.24 10/100/1000M RJ45 ports Supports MAC address self-learning and auto MDI/MDIX Supports 16K MAC address 48 Gbps Switching Capacity 3.5Mbit SDRAM Packet buffer Fanless design to make sure it works quietly without disturbing your family Desktop, expendable to rachmountable Plug and play, no configuration required