Use this 6ft Plenum Rated DC power cord to supply power to the TruLink AV Controller. Add flexibility to the installation by powering the Controller from the TruLink Audio Amplifier (#40100) or an alternate power source to save an Additional AC outlet from use. Specifically designed to easily connect to the AV Controllers Multiport Controller Interface Adapter, the power cord is a 5.5mm x 2.1mm DC Barrel plug to stripped and tinned wire . This provides a secure power connection that will remain firmly in place to ensure consistent and reliable performance of the AV Controller.