Power AC100-240V 50/60Hz Ethernet 16x Gigabit PoE Ports, 2x Uplink Gigabit Ports Chipset EN8850DH,RTL8238B Bandwidth 40 Gbps Pack forward rate 29.76 Mpps Packet Buffer 3 Mbit MAC Address 8K Forwarding Mode Store and Forward Network Protocols : IEEE802.3 (Ethernet) IEEE802.3u (Fast Ethernet) IEEE802.3ab (Gigabit Ethernet) IEEE802.3x (Flow Control) IEEE 802.3z (Gigabit Fiber Standard) IEEE802.3af (15.4W) IEEE802.3at (30W) PoE Protocols POE port output voltage: DC 44-57V, POE power supply core: 1/2+; 3/6- Industry Standards EMS: EN61000-4-2 (ESD) EN61000-4-5 (Surge)