10 x 10/100Mbps Auto-negotiation Fast Ethernet RJ-45 ports with 16 Port PoE function Mode-B Unsolicited Power(4, 5+/7, 8-) Supports PoE power up to 250W for all PoE ports, Per port Max 30 Watt Supports PoE IEEE 802.3 af compliant Powered Device (PD) Each port supports auto MDI/MDIX, so there is no need to use cross-over cables. Full/half duplex transfer mode for each port.