I am extremely happy with the marbleman fx trackball

I am extremely happy with the marbleman fx trackball  Read Less

This mouse is so comfortable and with the ability to use all four fingers and your thumb gave you pinpoint accuracy

This mouse is so comfortable and with the ability to use all four fingers and your thumb gave you pinpoint accuracy  Read Less

The key here is these are powered adapters not just a cable end adapter which will not work i see tcj12 being sold with cable e...  Read More

The key here is these are powered adapters not just a cable end adapter which will not work i see tcj12 being sold with cable end adapters that work with some usb ps2 mice but not with the tcj12  Read Less

The original design allows for such an exact fit where the optical sensor is held in place by pressure from the cable wrapping ...  Read More

The original design allows for such an exact fit where the optical sensor is held in place by pressure from the cable wrapping past it on many older units the sensor falls loose when the case is opened totally repairable with the correct techniques  Read Less

This has already affected the going price

This has already affected the going price  Read Less

Note the seller should have clean up the mouse before shipping it out

Note the seller should have clean up the mouse before shipping it out  Read Less

You can use your thumb and forefinger to gain accurate control of the pointer on the screen

You can use your thumb and forefinger to gain accurate control of the pointer on the screen  Read Less

One flick of a finger should move the cursor anywhere on the screen

One flick of a finger should move the cursor anywhere on the screen  Read Less

If the seal is open ask for photos of the contents

If the seal is open ask for photos of the contents  Read Less

But these twenty year old trackballs work just fine as a three button mouse right out of the box

But these twenty year old trackballs work just fine as a three button mouse right out of the box  Read Less

First sometimes the link on logitechs website that leads to the software you need to run in fullfeatured mode in win2k fails

First sometimes the link on logitechs website that leads to the software you need to run in fullfeatured mode in win2k fails  Read Less

I would also like to see a left handed model

I would also like to see a left handed model  Read Less