Get optical reliability at an affordable price. Microsoft Wheel Mouse Optical features a convenient scroll wheel, customizable buttons, and stylish design. Optical technology refers to the use of an optical sensor to track mouse movement, rather than the traditional use of mechanical parts.As a result, optical mouse products work on most surfaces and offer you better durability, increased speed and accuracy, and consistent performance. Ambidextrous design makes working more comfortable, whether you mouse with your left or right hand.Customize the mouse to work your way by reassigning any button or the wheel to open a file or Web page, or to perform a common command. Navigate documents and Web pages effortlessly without using the on-screen scroll bar, saving time and effort.

PC:

• Microsoft Windows XP Home Edition or Professional with a Pentium 233 MHz or higher processor and 128MB of RAM
• Microsoft Windows 2000 Professional or Server with a Pentium 133 MHz or higher processor and 128 MB of RAM
• Microsoft Windows Me or Windows 98 with a Pentium 133 MHz or higher processor and 32 MB of RAM
• Microsoft Windows NT 4.0 Workstation or Server with Service Pack 6 or later (no USB support) with a Pentium 133 MHz or higher processor and 64 MB of RAM

Mac:

• Mac OS X version 10.1 to 10.1.3 (excluding 10.0)
• Mac OS 8.6 to 9.x