Ports   24 x 10/100 + 2 x combo Gigabit SFP  Switching features Managed  Power Supply AC 120/230 V ( 50/60 Hz )  Others 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  Compliant Standards IEEE 802.3, IEEE 802.3u, IEEE 802.3z, IEEE 802.1D, IEEE 802.1Q, IEEE 802.3ab, IEEE 802.1p, IEEE 802.3x, IEEE 802.3ad (LACP), IEEE 802.1w, IEEE 802.1x   Connectivity Ports quantity 24  Copper ethernet cabling technology 10BASE-T, 100BASE-TX, 1000BASE-T, 1000BASE-TX  Ethernet LAN (RJ-45) ports quantity 24   Security MAC address filtering Yes  Security algorithms supported 802.1x RADIUS, HTTPS  Static port security Yes   Protocols Management protocols IGMP v1/v2  Supported network protocols IPv4/v6, SNTP, TFTP, HTTP, BOOTP, TFTP, LLDP   Weight 3040g = 3.5kg   Dimensions (W x D x H) 440.7 x 256.5 x 44.2 mm (17.35 x 10.1 x 1.74 ")