The mouse connects via USB, though a PS/2 converter is also supplied. The package comes with Intellipoint 4.1 software and is straightforward to install. It works with Windows 98 and all later versions of Windows. It's also compatible with Mac OS 8.6/9x/10.1. Unlike traditional mice, the Microsoft Blue Optical Mouse doesn't contain a ball. Instead it uses a high intensity LED and optical sensor to detect movement. This negates the need for regular cleaning and also provides greater precision.
During testing, the Microsoft Blue Optical Mouse performed well. It's comfortable to use, and precise. The buttons and wheel are responsive and accurate. Combine this with the durable construction and you have a mouse that is well worth the investment. --Jason Weston