Gigabit Ethernet installation switch 45x45 horizontal installation, 4x10/100/1000T with 1x 1000LX uplink and 10/100/1000T downlink, horizontal installation, 1310nm monomode ST, 44..57 VDC power supply connection, management capable (web/Telnet/SNMP/optional NMP -Software), VLANs, QoS, Security, 5x Power-over-Ethernet+ (PSE)