ZoneFlex 7055, ZoneFlex 802.11n dual-band concurrent 2.4 GHz & 5 GHz, Wired/Wireless Wall Switch, 1 10/100/1000 & 4 10/100 Ethernet Access Ports, POE in, 802.3af Ethernet out (one port), PBX pass through. Does not include DC power supply. This version is for use in China only. It does not support 48VDC power. This part requires the purchase of WatchDog Support.