Dariusz !

How are you ? I recall our last meeting @ TD Bank (Malden road) ages ago. How are things? Recall our meet our place well. Are you still in Windsor ?
Yes, we saw the writing on the wall ages ago on retail sales. We all have a background in either EE or Comp. Sci from the university and the business was an easy way to generate revenue for the real projects of interest. We have an in-house SMT line for our prototype / PCBA builds. The line is amazing and we have been able to place down to 01005 SMD parts and recently developed a breakout board with the Lattice ICE40UL1K (16 balls WLCSP package in a 1.4*1.4mm footprint). Learning about FPGA at our age is always fun but Verilog is fairly logical.
It has been a fun ride and we now have many designs for the PC industry and supply all the major players including the aerospace / airlines. In the movie Scully - the flight simulator from CAE has our adapter design from Windsor in there

They use a real-time hardened version of Windows for this task and our adapter offered the hardware requirements demanded by this project. Our more current designs offer DMA engines on the PCIe adapters to allow for very high sustained data rates which robotic surgical firms are after.
We are researching edge node designs with AI but there appears to be always some monetary catch with the silicon companies. They want us (every client I suppose) to buy containers of silicon but then the ref designs are with some astronomical backend license. Still very much learning. On device drivers development - yes, we have a great team offshore that charges US rates

but are solid. We have firm support on Windows and Linux platforms. With some bruises, did a design for a medical company for a robot that is running on QNX. No thanks to QNX for their zero support.
Hope you are well. Stay in touch. Are you in the software or hardware field ? If you are in Windsor, drop by and will show the SMT line which is a beast but cool when it is running. Hope that we can expand it with more equipment in the future.
On the OS2 support - I think we have some designs that can work but openly need testers to validate our knowledge that is on paper. It is not practical to write custom drivers, even if we could find the proper support materials and developers. Rather, we can properly match one or more of our designs with Mr. Sam Detweiller's device driver package. He worked with Mr. Ray Gwinn before this. The cost to develop a custom device driver can be easily $20k++ USD.
In summary, pretty sure we can support at least:
1S, 2S, 4S on PCIe bus with our existing hardware. More unique products are in development.
Stay safe!! Bye for now.
Kumar