Please examine the item carefully and bid if you like it. It has been tested and confirmed to be in working order. The power supply is not included. Please ensure you are satisfied with the item before bidding. We are not photography experts, so please carefully review all photos before considering a purchase. We cannot answer inquiries regarding the purchase date or usage period of the item. We lack product knowledge and cannot answer technical questions. Please make your judgment based on the product images. We are listing the item assuming you have viewed all the images. Feel free to bid. Our products are very satisfactory and useful.