Some Passive PoE power supply device may supply power to i-PRO camera, but its operation is not guaranteed to work normally due to the following reason.

　1. There is no safety circuit such as erroneous connection protectors (Not conform to IEEE802.3af standard)
　2. It supplies power by using Type B for PoE feeding system without detecting initial operation.
　3. A transmittable distance is only from 30 m to 40 m (IEEE802.3af standard : 100 m).