These 3Com 3C16980A Lite-On Type 32320 Power Supply T32320 PSU (Open Frame) are used but each one was pulled from a working unit. I have tested each and every one of these power supplies and they all work as they should. These power supplies will come to you packed in static protective bubble wrap and padded as necessary. Each one will be covered under my FREE 30 day return/refund guarantee (replace or refund). If you have any questions about this or any item I am selling here on eBay please do not hesitate to contact me.