DCT Factory S-2501B Black 3 Buttons 1 x Wheel PS/2 Ball Internet Mouse - Retail

It plugs in and works..Big Deal..Works half the time trying to wear down it's own plastic ridge inside the mouseball and that will take YEARS

Ball hangs up inside the mouse and makes the pointer jump around...This mouse is Cheaply built...Inside You may have to finish the sanding so the ball doesn't grab the Ridges

Price and Quality. Very good mouse for computers still using the PS/2 port

The mouse only came with one ball

its not that bad

its horrible for gaming the scoroll button doesnt work well