24 PORT 10/100/1000MPBS WITH 2 PORTSFP WEBSMART SWITCH WITH POEL2, Web Management, Port AggrEgation, VLAN, 19" Rackmount, Internal PSU, 802.11af PoE PRODUCT : Dlink Web Smart 24-Port Gig PoE Switch with 4 Combo SFP SlotsPORTS : 24 x 10/100/1000BASE-T PoE Auto-negotiating, Auto MDI-MDI/X ports with 802.3 Flow Control COMBO PORTS : 4 (SFP) SWITCH CAPACITY : 48Gbps PACKET FOWARDING RATE : 35.7Mpps MAC ADDRESS TABLE SIZE : 8K MAC ADDRESS UPDATE : Up to 256 static MAC entries Enable/disable auto-learning of MAC addresses PACKET BUFFER : 512KB JUMBO FRAME : 10,240 Bytes L2 FEATURES : IGMP v1/2 Snooping: supports 64 multicast groups 802.1D Spanning Tree ; Static Port Trunk (Link Aggregation)Up to 6 groups per device, Up to 8 ports per group VLAN : 802.1Q VLAN (VLAN Tagging); Up to 256 static VLAN groups Management VLAN ; Asymmetric VLAN SECURITY : 802.1X Port-based Access Control ; Broadcast Storm Control D-Link Safeguard Engine ; Trusted HostCabl