The Cisco Unified IP Phone Power Injector is a midspan power injector designed & tested for use with Cisco Unified IP phones. The Cisco Unified IP Phone Power Injector sits between a switch port & the Cisco Unified IP phone, providing inline power capability to an unpowered switch port. It supports Cisco midspan power, IEEE 802.3af modes for supplying power to the attached phone, & 10/100/1000BASE-T Ethernet connections.