Wheel for easy scrolling - Roll the wheel forward or backward instead of clicking on a scroll bar or arrow. It's a fast and easy way to move through your documents - and it works in Windows 98 and Windows NT based applications.
Easy setup - Just plug Microsoft Wheel Mouse into a serial or PS/2 port and it's ready to use! To take advantage of its scroll wheel features, simply install the IntelliPoint software.
Microsoft Reliability - Built to meet strict standards, Wheel Mouse is solid and reliable - just what you'd expect from a Microsoft product. Two-Year Hardware Warranty