Edit: Nevermind, found it. Found out they moved the file on the Panasonic site in the past and that one was available through Wayback:

https://web.archive.org/web/20130603214121/ht … f2h/f2h_usb.exe

Currently using a modified 2.27x version for my external USB CD-ROM, but I would like to try/compare the original unmodified version. Panasonic doesn't host the file anymore and it isn't available through Wayback.

Original link:
https://panasonic.jp/com/support/drive/other/f2h_usb.html

Filename:
f2h_usb.exe