... ,USB power supply,no extral AC power required. 2.Scanning target: file,book,magzine,bill,photo,picture,documnet ... second 6.Power supply: USB power 7.Interface:USB 2.0 8.Image storage:static storage. 9.Format:JPG,TIF ... ,512MB or higher memory,CD-ROM; 2.USB 2.0 Connector,Microsoft DirectX 9.0 Runtime environment 3.Support Operating system:windows ... . 3 million pixels portable book scanner,usb 2.0 interface