MOBI files not transferring to Kindle Fire, not supported?

CoralBeauty
25.02.2013
CoralBeauty

I have 100's of books on an external Hard Drive, all MOBI files. However when I tried to copy and paste the files from my laptop to the Kindle Fire via the USB cable. A window kept popping up saying "File not supported" - Any Ideas?

Abc
26.02.2013
Abc

1. Open those converted Mobi books with Kindle for PC. If they can be opened, those books won't have any problem.

2. The oldest Kindle does not support Mobi.

Or you will have to call Amazon Kindle support as MOBI format is supposed to be supported.