The 8 port 10/100Mbps PoE switch with 48V/2A external power, provides a easier installation way for your PoE devices (IP cameras,VoIP,wireless AP,etc.).And it can detect your PoE devices according to PoE standard.So the users do not need to worry about the PoE switch will damage their PoE devices.The max transmission distance is 100 meters with Cat5 cables.Ideally,shorter cable would reduce the power degradation over the cables; with high quality cables also can reduce power loss.Plug & play design make the installation quite easy,users do not need any configuration,which make this PoE switch a very good choice for IP cameras,wireless AP,VoIP users.