This product is either discontinued or we cannot get that from suppliers.
Dahua DH-PFS3106-4ET-60 Switch Unmanaged, Port 1100/1000 Base-X, 110/100/1000 Base-T, 410/100 Base-T (PoE power supply), Capacity 6.8G, Forwarding Rate 3.57Mpps, Buffer Memory 1Mb, MAC 18K, DC 48~57V power adapter.
DH-PFS3106-4ET-60 is a layer two Hardened PoE Switch, which provides 410/100Mbps PoE ports, 1100/1000 Mbps optical port and 110/100/1000Mbps Ethernet uplink port.