But getting back to reality, the QLG2 is set up to pretend to be a 4Mb memory stick,No, only if the link is made.
Otherwise it appears as a serial port.
I do not know what Linux uses but whether you call it a driver or not a routine is activated to communicate with the device.
For W10 users it installs usbser.sys presumably a generic serial port driver.
73 Alan G4ZFQ