Pros: good look and feel, good price, quick delivery, because its 800 DPI it will scoot across a big screen when the mouse control panel is tweaked, wheel responds well, optical (so no mouse pad required)
Summary: Middle button did not work until mouse driver was installed from the website. Excellent mouse.
Pros: Very comfortable for long hours of gaming, tracks accurately and has responsive keys. Rugged feel of both mouse and cord, I expect this mouse to last a long time. Would purchase again.
Cons: Middle scrolling appears to react differently to separate applications, going from very sensitive in photoshop to moderate for web browsing. The good news is this can be adjusted in the Mouse Control Panel.
Excellent PS2 mouse. Being symmetrical it works perfectly well with left or right hands.
R. F. Stevens "richard23491", Amazon
12 January 2015
Summary: A PS2 wired mouse will always work (if not physically broken) because it does not need to fight for wi-fi or blue-tooth bandwidth nor contend with sharing a USB resource, does not need batteries, and the driver is so basic it is part of the OS.