• Optional 820 ft (250 m) Extended Transmission Mode • 4 x 10/100 Mbps Auto-MDIX Ports • IEEE 802.3at/af PoE Compliant • 30 Watts per PoE Port, PoE Power Budget 58 W • 4 kV Surge Protection • IEEE 802.3x Flow Control Support • Plug-and-Play Installation • 1 Gbps Switching Fabric • 448 Kbits RAM Data Buffer • K MAC Address Entries • Sturdy Metal Enclosure