Product features: Conform to IEEE802.3ah standard Support Ethernet service layer 2 switchingand wire-speed forwarding of uplink and downlink services Support frame filtering and suppression Support standard 802.1Q Vlan function,support VLAN conversion Support 4094 VLANs (802.1Q) Support Dynamic Bandwidth Allocation (DBA)function Support QoS, including traffic flowclassification, priority marking, queue and dispatch, traffic shaping andtraffic control, etc Single ONU supports up to 1 LLID. Support IGMP Snooping Support Ethernet port ratelimit loopdetection Support power failure alarm Support lightning protection for powersupply and lightning protection for service port Port features : 1 PON ports (1.25G) 1 10/100/1000M port         Physical features: Power supply: 12VDC Power consumption: 6W Working temperature:0 ～ 55 ℃ Storage temperature: -30 ～ 60 ℃ Relative humidity: 10 ～ 90% (non-condensing) More details:pls contact with me by Skype:marietang88 or email:marie@szxdk.com