TP-LINK TL-SG1024D, Port-24, Protocols IEEE 802.3i, IEEE 802.3u, IEEE 802.3ab , IEEE 802.3x, Interface 24 10/100/1000Mbps RJ45 Ports (Auto Negotiation/Auto MDI/MDIX), Power 100-240VAC, 50/60Hz, Rack Mountable, Max Power Consumption 13.62W(220V/50Hz), Max Heat Dissipation 46.44BTU/h, Capacity 48Gbps, Jumbo Frame 10Kb. The TL-SG1024D 24-Port Gigabit switch provides an easy way to make the transition to Gigabit Ethernet. All 24 ports support auto MDI/MDIX, no need to worry about the cable type, simply plug and play.