Its not a true ps2 mouse unless it has a ball
![Grin ;D](https://www.eevblog.com/forum/Smileys/default/grin.gif)
Constantly used to have to take them out and clean the bleeding rollers, so glad I went optical now.
Haha... This mouse has a ball - to me the only drawback. Optical mice (when done right) is a huge leap forward in usability.
And then only so far until you discover a Trackman Wheel or wireless Trackball. ![Smiley :)](https://www.eevblog.com/forum/Smileys/default/smiley.gif)
Yeah, I should have said that I consider a drawback only when the ball is under the mouse. ![Laughing :-DD](https://www.eevblog.com/forum/Smileys/default/smiley_laughing.gif)
I mentioned this somewhere around here; I really liked Logitech's trackball marble but I started to develop fatigue on my thumb muscles and had to stop using it. Minesweeper on Windows 3.11 was one of the reasons for this.
I remember you saying so.
Isn't a marble the one with the ball in the middle ?
I looked at those and immediately thought they would cause RSI whereas the ones with the ball on the side where it can only be used with your thumb and the ergonomic shape allows you to 'rest' your arm when your hand is planted on it. We really like these and would replace them in an instant should they ever stop working.
A buddy I convinced to get the wireless Trackball can't believe he got used to it so quickly and it was the perfect solution for using a mouse on the armrest of his recliner where he uses his 48" PnP TV as a monitor too.