The Cisco CP-PWR-CUBE-3 is a refurbished power transformer designed for use with Cisco 7900 series IP Phones. This unit provides the necessary power supply for compatible VoIP phones, ensuring operational readiness for business communication systems. It is suitable for organizations requiring replacement or spare power adapters for their existing Cisco 7900 IP Phone infrastructure. This refurbished component offers a cost-effective solution for maintaining phone system functionality without the need to purchase new power equipment. It addresses common issues such as lost or damaged power supplies, enabling IT departments to quickly restore service to individual phone units.