24 + 4 + 1-port Fast Ethernet standalone switch with 24x 10/100 Mbps RJ45 ports, 4x Gigabit combo ports (RJ45 / SFP) and 1x RS232 port consoles, Management via CLI (Console, Telnet), Web and SNMP, supports IPv6, Spanning Tree, VLAN (Q-in-Q), LACP, IGMP snooping, QoS, RADIUS, TACACS +, SSH and SSL, powered by internal power supply 100V -. 240V AC, 19 'Mounting