wieNET IP Switch, 4-Port Managed Gigabit PoE Switch, 8 Ports 10/100BaseT (X) RJ45 with PoE based on IEEE 802.3 af/at , ERPS Ring (recovery time < 20 ms @ 40 switches), STP/RSTP/MSTP for network redundancy, Remote Man agement with Web browser, Telnet console, serial console and Windows Uti lity, Profinet v2 Class B compatible, GSDML device description file for integration in Profinet-Networks, IP30 housing vertical design, Power su pply 45-57 VDC in PoE-802.3af mode/51-57 VDC in PoE-802.3at mode