Logitech MX518 Optical Mouse General Features:  Award-winning Logitech MX Optical Engine  USB interface  USB to PS/2 adapter included  Eight (8) buttons  In-game sensitivity switching to 1,600, 800, and 400-dpi resolution  5.8 megapixel/second image processing  Up to 15 g of acceleration  Expanded 16-bit data format supports blazing fast moves with pure precision  Super-slick gaming feet for effortless, precise tracking  Throughput: 16 bit/axis USB data format, and 125/sec USB report rate  Features: Programmable buttons, scrolling wheel, sensitivity adjustment Resolution:  1600-dpi native  Adjustable to 400- and 800-dpi Package Includes:  Logitech USB/PS2 MX-518 Gaming Grade Optical Scroll Mouse  USB to PS/2 adapter