So I ordered this trackball off eBay. It arrived safely last week. So i thought i would do a teardown for those interested in this trackball. You can switch between 800 and 400 dpi by pressing down the scroll wheel and holding the right click button for 2 seconds.
Some pictures:
The screws are all visible on the bottom of the trackball.
Here we have the Logitech M570 Vs Microsoft Optical Trackball vs Sanwa Trackball
Size comparison of the Trackballs
This is what it looks like on the inside. The USB cable is removable via the connector While the optical sensor pcb is connected by a fixed cable.
Picture of the switch.
The socket with the three metal ball bearings.
There is a small hole on the back side of the bearings for easy removal with a small pin.
The bearings are bigger then the M570 and Microsoft trackball.
This is the original cable . I replaced my cable with a spare black one i had.
That is all. I hope this helps someone out if they are considering purchasing this trackball.