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.