TP-LINK TL-SF1008D, Protocols IEEE 802.3, IEEE 802.3u, IEEE 802.3x CSMA/CD, Interface 8 10/100Mbps Ports, Auto-Negotiation, Auto-MDI/MDIX, External Power Supply100-240VAC, 50/60Hz (Output: 9VDC / 0.6A), Buffer 768Kb, Data Rates 10/100Mbps at Half Duplex ; 20/200Mbps at Full Duplex, Max Heat Dissipation 7.0 BTU/h. The TL-SF1008D Fast Ethernet Switch is designed for SOHO (Small Office/Home Office) or workgroup users. All 8 ports support auto MDI/MDIX, no need to worry about the cable type, simply plug and play.