Power AC100-240V50/60Hz Ethernet 24x Gigabit PoE Ports 2x Uplink Gigabit Ports 2x Gigabit SFP Ports Chipset EN8850DH, RTL8238B Bandwidth 56 Gbps Pack forward rate 41.644 Mpps Packet Buffer 3 Mbit MAC Address 8K Forwarding Mode Store and forward Network Protocol IEEE802.3 (Ethernet) IEEE802.3u (Fast Ethernet) IEEE802.3ab (Gigabit Ethernet) IEEE802.3x (Flow Control) IEEE 802.3z (Gigabit Ethernet Fiber Standard) PoE protocol IEEE802.3af (15.4W) IEEE802.3at (30W) POE port output voltage: DC 44~57V POE power supply core: 1/2+; 3/6- Industry Standard EMS: EN61000-4-2 (ESD) EN61000-4-5 (Surge)