Forty-eight (48) 10/100/1000BASE-T PoE/PoE+ Ports Four (4) Gigabit SFP Ports Supports PoE and PoE+ (802.3af and 802.3at) with 370W PoE power budget Supports 802.1Q VLAN, Auto Voice VLAN and Auto Surveillance VLAN Advanced features include QoS, Bandwidth Limiting, Link Aggregation, Port Mirroring, Spanning Tree and IGMP Snooping Security features include Access Control List (ACL), 802.1X / RADIUS, ARP Spoofing Prevention, and D-Link Safeguard Engine Easily managed using intuitive GUI, D-Link Network Assistant Utility, D-View 7, Compact CLI or SNMP