24-port Gigabit switch base unit with a total of 3x module slots to accommodate KS-2422 switch modules, installation of up to 3x 8-port Gigabit and Fast Ethernet modules on the front, Layer 3 management via SNMP, console, Telnet and web browser, supports spanning tree , IGMP, RMON, VLAN, port trunking, port mirroring, QoS, ToS, SSH and HTTPS, full and half duplex on all ports, universal and flexible use through different module variants, power supply via internal power supply 100 to 240V AC, incl .19' mounting kit