This is a Microsoft genuine AC adapter, 135W, that matches the main unit with "12V-10.83A" written on the back of the 360S. It can also be used for 12V-9.6A (120W main unit). Operation has been confirmed on the actual device. ・Packing materials are reused. ・This item is also listed on other flea market sites. If purchased simultaneously, we may have to decline the sale to one of the buyers. Thank you for your understanding.