This product is a tubular imaging system consisting of an optical lens an image sensor an illumination mechanism and an image transfer control circuit connected to a computer. You can display the images captured by the USB PEN MICROSCOPE on the computer screen store them on the computer print them or send them over the Internet. SYSTEM REQUIREMENTS For best picture quality the following specifications are recommended: 1. IBM PC compatible computer 2. Intel Pentium III processor or above 3. 128M RAM or above 4. At least two USB ports (For best effect USB 2.0 port is recommended). 5. Windows XPVista and Windows 7 & MAC CD: http://m5.img.dxcdn.com/CDDriver/CD/sku.309040.rar