I'm having similar problems.
Getting the error
Cannot open serial port 'COM1': The system cannot find the file specified.
Windows 10. Seeing it in "other devices" as "SIO2PC Universal Interface"
In the device driver details, I'm getting
The drivers for this device are not installed. (Code 28)
There are no compatible drivers for this device.
I want to think I got an error when installing, something about an unsigned driver.
I received this unit second hand, so I don't know who manufactured it. The board says © 2007 Steven J Tucker (Actually, after googling, looks like Atarimax)