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Power over Ethernet – Connection methods for cameras with PoE support and without PoE

The connection method of the cameras depends on the fact whether or not the cameras and routers support the Power over Ethernet (power through Ethernet).

1. The camera supports Power over Ethernet (PoE) and is directly connected to the port of a switch or a router with PoE.

Fig.1

This method is used when both the camera and the network equipment support Power over Ethernet (PoE). Typically, this power supply method is used when the local network includes more than 4-5 cameras.

Advantages:

  • simple connection;
  • does not require additional sockets, and power supply units.

2. The camera does not support Power over Ethernet (PoE) and is directly connected to the port of a switch or a router with PoE.

Fig. 2

This method is used when cameras do not support PoE, and the network equipment (a switch or a router) supports Power over Ethernet (PoE). In this case a PoE splitter should be used for each camera. Typically, this method is used when there are no power supply sockets near the installation place of the cameras and when there is more than 4-5 cameras within the local network.

Advantages:

  • simple connection of cameras;
  • there is no need to put a wire for power supply of each camera.

Disadvantages:

  • additional PoE splitters are required for each camera.

3. The camera supports Power over Ethernet (PoE) and is directly connected to the port of a switch or a router which does not support PoE.

Fig.3

This method is used when cameras support PoE, and the network equipment (a switch or a router) does not support Power over Ethernet (PoE). In this case PoE injectors should be used for each camera. Typically, this method is used when there are no power supply sockets near the installation place of the cameras and the number of cameras is up to 4 pcs.

Advantages:

  • simple connection of cameras;
  • there is no need to put a wire for power supply of each camera.

Disadvantages:

  • additional PoE injectors are required for each camera;
  • for each PoE injector an additional power supply socket is required.

4. The camera supports Power over Ethernet (PoE) and is directly connected to the port of a switch or a router which does not support PoE.

Fig. 4

This method is used when cameras support PoE, and the network equipment (a switch or a router) does not support Power over Ethernet (PoE). In this case a multiport PoE injector should be used. Typically, this method is used when there are no power supply sockets near the installation place of the cameras and the number of cameras is more than 4 pcs.

Advantages:

  • simple connection of cameras;
  • there is no need to put a wire for power supply of each camera.
  • only one injector socket is required.

Disadvantages:

  • an additional PoE injector is required.

5. The camera does not support Power over Ethernet (PoE) and is directly connected to the port of a switch or a router which does not support PoE.

Fig. 5

This method is used when cameras do not support PoE, and the network equipment (a switch or a router) does not support Power over Ethernet (PoE). In this case separate power supply units for cameras should be used. Typically, this method is used when there are sockets near the installation place of the cameras.

Advantages:

  • simple connection of cameras;
  • no additional equipment is required;
  • there is no need to put a wire for power supply of each camera.

6. The camera does not support Power over Ethernet (PoE) and is directly connected to the port of a switch or a router which does not support PoE.

Fig.6

This method is used when cameras do not support PoE, and the network equipment (a switch or a router) does not support Power over Ethernet (PoE). In this case separate pairs of a PoE splitter and injector should be used for connection of each camera. Typically, this method is used when there is no power supply socket near the installation place of the cameras.

Disadvantages:

  • additional equipment is required for each camera;
  • additional socket is required for each PoE injector.

7. The camera does not support Power over Ethernet (PoE) and is directly connected to the port of a switch or a router which does not support PoE.

Fig.7

This method is used when cameras are connected to the network using Wi-Fi. In this case separate power supply units for cameras should be used. Typically, this method is used when there are sockets near the installation place of the cameras but it is impossible to connect the camera to the wired network.

Advantages:

  • simple connection of cameras;
  • no additional equipment is required;
  • there is no need to put a data cable.

Disadvantages:

  • a socket is required for each camera;
  • the quality of the radio signal not always allows to transfer a high-quality video signal.

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