22 + 2 + 2 Port Gigabit Switch with 22x 100/1000 Mbps SFP slots to accommodate standard SFP, 2x Gigabit Combo ports optional SFP / RJ45, 2x 10G SFP + slots for inserting SFP / SFP + modules (dual speed), 1x expansion slot with dual SFP + ports, 1x USB port, fan, management via CLI (Console, Telnet), Web and SNMP, supports Spanning Tree (STP, RSTP, MSTP), IPv6, VLAN, LACP, IGMP, QoS, OAM to IEEE802.3ah and IEEE802.3ag, incl. 19'-Mounting