Product Details   Device Type  Switch - 48 ports - Managed  Enclosure Type  Rack-mountable - 1U  Ports  48 x 10/100/1000 + 4 x SFP  Performance  Switching capacity : 176 Gbps ¦ Forwarding performance (64-byte packet size) : 77.4 Mpps  MAC Address Table Size  8K entries  Remote Management Protocol  SNMP 1, SNMP 2, RMON 1, RMON 2, RMON 3, RMON 9, Telnet, SNMP 3, SNMP 2c, HTTP, HTTPS, TFTP, SSH  Features  Layer 2 switching, auto-sensing per device, dynamic IP address assignment , auto-negotiation, BOOTP support, ARP support, load balancing, VLAN support, auto-uplink (auto MDI/MDI-X), IGMP snooping, Syslog support, DiffServ support, Broadcast Storm Control, IPv6 support, Multicast Storm Control, Unicast Storm Control, Rapid Spanning Tree Protocol (RSTP) support, Multiple Spanning Tree Protocol (MSTP) support, DHCP snooping, Dynamic Trunking Protocol (DTP) support, Port Aggregation Protocol (PAgP) support, Access Control List (ACL) support, Quality of Service (QoS), Link Aggregation Control Protocol (LACP), Port Security, MAC Address Notification, Remote Switch Port Analyzer (RSPAN)  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, IEEE 802.1s, IEEE 802.3ah, IEEE 802.1ab (LLDP)  Power  AC 120/230 V ( 50/60 Hz )  Dimensions (WxDxH)  44.5 cm x 29.9 cm x 4.5 cm  Weight  4.77 kg