This Microsoft IntelliMouse Explorer 3.0A USB -PS/2 Compatible Mouse is a reliable gaming mouse that comes in a stylish gray color with a red base. It has a total of 5 buttons and an ergonomic design that makes it comfortable to use for long hours. The tracking method used by this mouse is optical and it can be connected using a PS/2, or USB wired connectivity options. The mouse is made in China and is compatible with computers and tablets.