Ports   24 x 10/100/1000 + 2 x combo Gigabit SFP  Switching features Layer 2 switching, DHCP support, BOOTP support, VLAN support, IGMP snooping, Syslog support, port mirroring, DiffServ support, Weighted Round Robin (WRR) queuing, Broadcast Storm Control, IPv6 support, Multicast Storm Control, Unicast Storm Control, SNTP support, Spanning Tree Protocol (STP) support, Trivial File Transfer Protocol (TFTP) support, Quality of Service (QoS), Jumbo Frames support, MLD snooping, fanless  Power Supply Power Device Power supply - internal   Voltage Required AC 120/230 V ( 50/60 Hz )     Others Data transmission Maximum data transfer rate 52 Gbit/s   Supported data transfer rates 10/100/1000 Mbps   Switching capacity 52 Gbit/s     Networking MAC address table 8000 entries   Networking standards EEE 802.3, IEEE 802.3u, IEEE 802.3ab   Number of VLANs 128     Connectivity Ports quantity 26   Copper ethernet cabling technology 10BASE-T, 100BASE-TX, 1000BASE-T   Ethernet LAN (RJ-45) ports quantity 24     Security MAC address filtering Y     Energy management Power over Ethernet (PoE) Support N   Power consumption (typical) - W   Input current 2.5 A     Weight 3270 g   Dimensions (W x D x H) 17.35 x 10.1 x 1.73 "