Connect two IP/PoE devices to a PoE switch or NVR using one Cat5/6 cable. Supports up to 15.4W (IEEE 802.3af) and 25.5W (IEEE 802.3at) per device. Switchable Type A (USA/Asia) & Type B (UK/Europe) modes ensure compatibility. Easy plug-and-play setup with no extra power supplies needed. Reduces installation costs and supports Hikvision PoE NVRs.