Micro Innovations Corp. was a computer-peripheral company; their website mic-innovations.com was last seen in spring 2009 by Archive.org.
I have found trackballs on their website from as late as spring 2005. Those were three models:
- PD700T (Scroll Track) with 5 buttons, scrolling and PS/2 connection
- fingertip-operated ambidextrous trackball with a long body, buttons on the sides (I can see only one button on each side, though), a scroll wheel on the back (similar to Kensington TurboBall), presumably (opto-)mechanical sensing
- there were white and silver versions
- Amazon listing
- PD705T and PD710T (Optical Trackball) with optical sensing, scroll wheel, programmable buttons and USB connection
An older revision of the Micro Innovations website lists another model:
- PD100I (Track) with dual wheel scrolling
- (presumably) fingertip-operated right-handed trackball that looks identical to A4Tech WWT-13, with three buttons and two scroll wheels to the right of the ball, presumably (opto-)mechanical sensing
- the only listing that I could find
- PD99i (Micro Track)
- (presumably) an identical-looking predecessor to the newer PD100i listed above
- original listing
- STK2000 (Star Track), STK3000 (Web Track) and STK4000 (Web Track II)
- thumb-operated right-handed trackball with adjustable distance between the ball and the rest of the chassis with three buttons, opto-mechanical sensing (supposedly with "up to 6000 dpi")
- the difference between Star Track and Web Track was that Web Track shipped with software for scrolling emulation
- it appears that STK2000 was white, I speculate that STK3000 was also white, and STK4000 was black
- eBay listing for STK4000
What I find interesting:
- STK2000-4000 being adjustable thumb-operated trackballs. Imagine a modern trackball with discrete trackball and body modules that you could position and tent independently.
- PD100I/PD99I looking identical to A4Tech WWT-13. Was one a rebrand of the other? Such a trackball was also rebranded by Belkin (see Belkin Trackmaster Wheel Mouse).
- PD700T looking like a cross between Logitech Marble Mouse and Kensington TurboBall.
- PD705T/PD710T looking similar/identical to Sanwa MA-TB39.