24 PoE 10/100/1000 Base-T port with 4 x 1000Base-T /SFP ports 8 Queues, 1000Mbps SFP support only, Jumbo, MLD, SSH, "DNA" Utility - 24 x PoE 10/100/1000Mbps Auto-Negotiating Ports - 4 x Combo 1000BaseT/SFP Port - Port 1-4 802.3at up to 30W - Port 5-24 802.3af up to 15.4W - Switching Capacity 56 Gbps - Advance power saving features - Half-/Full-Duplex, auto-negotiation, Auto MDI/MDIX - IEEE 802.3x Flow Control - Jumbo frames up to 9216 bytes - 802.3ad Link Aggregation - 802.1D/802.1w/802.1s Multiple Spanning Tree - Asymmetric VLAN, Auto Voice/Surveillance VLAN - 802.1p QoS with 8 queues - MAC/IP filtering - MAC/IP-based ACL 200 rules (Port List) - 802.1X port-base Access Control, Port Security - MLD Snooping - LLDP, LLDP-MED, Smart Binding, Traffic Segmentation - IPv6 configurations - Static Routing and Default Route - D-Link Safequare Engine - D-Link Network Assistent (DNA) Utility, web based management, compact CLI, SSH - Dual Image - D-View 6.0 support - 19" Rackmount Installation - IEEE 802.3az EEE - Firmware Release 6 not backward compatible to Hardware Version C1.