I found some software/drivers for the Panasonic KX-FM386 here:
https://panasonic.net/cns/pcc/support/fax/asia/model/model_asia.htm . Scroll down to the KX-FM383/386 series. Select your specific model (CX or BX) to advance to the download page. Unfortunately, Panasonic only supports Windows 10 32-bit with this driver; they never issued a version for a 64-bit Windows OS (from XP onwards). Most Windows 10 computers use the 64-bit version. Windows 10 has required signed drivers for several years and the driver may not work even in compatibility mode. To check which version of Windows 10 is installed on your computer, click on Start. Go to Settings > System > About (at the bottom of the list) and scroll down to the Device Specifications.
I hope this helps.
Cindy Wells
(A computer that was upgraded from Windows 7 32-bit or Windows 8 32-bit to Windows 10 will still use Windows 10 32-bit. Then the driver from the Panasonic.net page will certainly work.)
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