Genuine cisco 48v power supply adapter. The item "Cisco IP Phone PSU Power Supply for 7900 Phone Series All Models" is in sale since Friday, July 27, 2018. This item is in the category "Computers/Tablets & Networking\Enterprise Networking, Servers\Other Enterprise Networking". The seller is "royal-technology" and is located in West Midlands, West Midlands. This item can be shipped worldwide.