Guys designed for use by younger students, the animal mouse will help captivate and engage beginning computer users with its bright colors and fun theme. Roller button functioning and optical tracking helps student productivity while its rugged ABS plastic construction is built to withstand the knocks of daily use. These mice have a PS/2 connection. Most desktops have that type of port. If not, there are very cheap PS/2 to USB adapters you can buy to make this mouse work with any USB port! The original price is $19.95 but you can buy it for $5.99.