![kensington mouse driver version 5.02 kensington mouse driver version 5.02](https://cdnv2.moovin.com.br/marbig/imagens/produtos/original/mouse-sem-fio-kensington-pro-fit-27b44b07815cdf1a6deea01c93a9b1b5.jpg)
Result: mouse would work, trackball wouldn't. Concurrently installing a junk PS/2 mouse on my PS/2 port while running the trackball on either COM port. The DOS driver, after being added to my autoexec.bat, detected the trackball fine, but this did not affect the non-detection issue in Windows. I'm running Win98 with all updates, latest sound/video/chipset drivers. Running the DOS driver, which I found in older Kensington driver packages
#KENSINGTON MOUSE DRIVER VERSION 5.02 SERIAL#
Changing resource settings for the serial ports, both via the BIOS and via Windows. You can also manually specify I/O address and IRQ, but this has also failed thus far. These tell it whether to look at PS/2 first or serial first, stuff like that. Selecting the various 'search methods' for the driver software. Installing older versions of the driver software (I've tried MouseWorks* versions 5.02, 5.30, 5.40, 5.41, and 5.60. This is why I'm trying to use a serial port as I did before, and it worked before without issue. If I remember right, I had similar issues with my previous motherboard (Asus P2B) and PS/2, so I suspect the keyboard.
![kensington mouse driver version 5.02 kensington mouse driver version 5.02](http://acco-product-images.s3.amazonaws.com/mbank40701_w1400_h1400.jpg)
I'll let go of everything and it'll act as though I'm holding down, say, my W key. Tank Wars), alot of trackball and keyboard activity together tend to result in periodic 'stuck keys', e.g.
![kensington mouse driver version 5.02 kensington mouse driver version 5.02](https://c1.neweggimages.com/ProductImage/A00Y_1_201605031167824720.jpg)
This leads to an unfortunate "side problem" though: while in games (modern 3D accelerated games, not. However, if I use the included serial-PS/2 adapter, it runs fine off the PS/2 port, with acceleration and whatnot. Windows will still run it as a regular mouse but I lose the functionality of the 3rd and 4th buttons and all the acceleration settings I've grown used to. When plugged into a COM port, the Kensington driver software refuses to detect the trackball. OK, so I have this Kensington Expert Mouse 5.0 (a nice trackball for those of you that don't know).