HikVision DS-3E0318P-E M(C) - Intelligent PoE Management When the power supply exceeds the limit, PoE ports intelligently manage the power supply, which extends the switch lifetime, Up to 300 m Long Range PoE Transmission The distance between IPCs and switch can reach maximum 300 meters, 4 8-Core Adaptive Power Supply with Less Power Loss 8-core power supply reduces the power loss on cables 6 KV Surge Protection to Improve Reliability in Harsh Environment The built-in surge protection device protects the switch from the sudden lightning surge in harsh environment, Design for Video Transmission VIP port ensures important data transmission when network congestion occurs.