• Two-layer PoE Ethernet switch • MAC auto study and aging, MAC address list capacity is 1K • Conform IEEE802.3, IEEE802.3u and IEEE802.3X standards • Default Mode: The device works as a general switch and all ports support 10/100Mbps auto-negotiation. • Extend Mode: VLAN isolation is enabled. Ports 1-4 will be isolated respectively (10Mbps auto-negotiation), but they can communicate with the Uplink port. Besides, the transmission distance of power and network data is up to 250m.