No additional power supply is required. The power for the CamIO is provided over the ethernet cable. The CamIO-PoE has 2 input contacts, 2 output contacts, one audio line-in and an amplified audio output channel. With the integrated strip terminal you can easily access the audio interface and the contacts of the camera. The integrated amplifier and the CamIO-speaker in the wall mount offer an improved audio quality. For example, using the CamIO-PoE with a MOBOTIX-M12 camera, you can obtain the full performance of your CamIO. Order number: MX-CAMIO-POE