4*1000M POE Port+2*1000M Uplinked +1SFP DC48-56V Redundant dual power supply voltage Support ring network and network storm protection 1st ports support the 250 meters extend Support the Vlan for the 1-4 ports Support the AI watchdog Anti-Surge Protection: 6kv Port Anti-Static: 8kv (contact). 15kv (Air) Working temperature: -40℃ ~ +75℃
