Experience the superior precision of high-performance laser! Delivering extraordinary control on virtually any surface, Logitech laser technology makes optical obsolete. The Logitech MX 400 Performance Laser Mouse is ready to use in seconds.The MX400 moves flawlessly on surfaces where optical mice can't go. Performance Laser Tracking provides state-of-the-art laser technology for unmatched precision and control; Experience the unique comfort grip. With gently contoured sides and soft rubber grips; the MX400 is designed for enhanced support and comfort; View digital photos and spreadsheets. Instantly zoom in and out, scroll horizontally or vertically with the Tilt Wheel plus Zoom; Speed-browse on the web and navigate more easily with the MX400's universal Forward/Back buttons; Just plug and play! The MX400 is extremely simple to install; simply connect the mouse to the USB or PS/2 port and it's ready to use.