Our new, refurbished and used Cisco Unified IP Phone Power Injector is a single-port midspan power injector with an integrated power supply that has been specifically designed and tested for use with all Cisco Unified IP Phones (including Gigabit versions). This product may be used asan alternative to the existing Cisco phone power supply (CP-PWR-CUBE-3=) , and can support a maximum distance of 100 meters between an unpowered switch and a Cisco Unified IP Phone.