This is a used document scanner I was using personally. It was working normally until recently. It supports scanning up to A3 size. Included items: Main unit (scanner), USB cable, black mat, CD-ROM, USB memory, manual Please refer to the photos for the compatible PC specifications. The OS is up to Win10, but I was personally using it with Win11 (this is not guaranteed). Please note that I cannot provide guidance on how to use it or its performance.