Note: No software installation is required. You need 2 AA batteries ( included) and a memory card (not included) to use it directly. Scan mode: Press and hold "Scan" for 2 seconds to turn on the device, and then press "Scan", the green light is on. The scanner moves to scan the file until the green light turns off automatically . Portable Scanner scans images or pictures quickly: Store JPEG/PDF files within seconds, scan images or pictures quickly, plug and play, no need any software preinstalled. Compatible with Windows XP/7/Vista/Mac OS 10.4 or above version. Lightweight and travel-friendly: Stored in Micro SD card directly, support read data on your computer or phone with USB connected. Powered by 2pcs AA batteries, Compact Design, it is convenient to carry outside.