Prolific driver version on Windows

April 21, 2019

Some older Prolific-based USB interfaces–such as used to program two-way radios and amateur radios–can fail to be recognized on Windows upon first plugin. Looking in Windows Device Manager, the device shows up with a yellow caution sign, and an error message like:

This device cannot start. (Code 10) {Not Enough Quota} Not enough virtual memory or paging file quota is available to complete the specified operation.

Usually the fix is to install an older version of the Prolific driver that is less sensitive to Prolific chip version. We have experienced that the Prolific 3.6 - 3.8 drivers are subject to this issue.

We can’t vouch for the older Prolific 3.2 drivers available but they do work.