This is the charging station for an early model Roomba, the 560 (the model with the silver top). I am selling it because I replaced the main unit due to a malfunction. I thought the adapter might be the problem, so I bought a new one, but it seems the issue was with the main unit. If you can use it, please consider purchasing it. Below is information about the adapter: 【iRobot Roomba AC Adapter / Charging Adapter Compatible with iRobot Roomba 500 600 700 Series 22.5V 1.25A XENONSHOP】 Returns are accepted if there is a problem with charging.