RETSOL PD-3000 Barcode Scanner 2D PLUG-AND-PLAY - Just plug into a standard USB port and start your scan, no drivers required, no need battery; works with Windows, Linux and Mac OS systems. LARGE SCANNING WINDOW - With this large scanning window, this scanner is your go to presentation barcode reader featuring a hands-free design and a small footprint. 1D/2D Barcode Scanner: easily capture bar codes 1D, 2D on labels, paper, and mobile phone or computer displays in a sensitive and accurate manner. HANDSFREE AND ADJUSTABLE HEAD: No need to grab the scanner, you can hold big goods by two hands. With 30 degree adjustable head, you can change the scanning angle easily.