https://www.handheldsystems.com/handhelds/ms-dos/fs3/fs3_access.htm
has one of those cables (or at least "P-1940-0042" part number) $125
For connecting an "Itron FS/3 to PC".
and a manual ("Developer's Guide") for an "Itronix Husky FS/2". $75
So, look for "Itronix/Itron Husky FS/2"
https://cybarcode.com/itronix/data_collection_terminals/portable/batch/husky_fs2
https://www.9jatools.com/products/sokkia-itronix-husky-fs2-handheld-computer-fs-2?variant=30927526723683
has a picture of the end of the FS/2, which has 2 male DE-9 ports.
On Sat, 30 Jul 2022, Chuck Guzis via cctalk wrote:
Could be--again, blurry photos leave us guessing. But that's a good find!
My subsequent email has URL for the spec sheet for the FS/2.
It mentions in the table, a "12 pin round connector RS232". In which
case, this cable is for connecting THAT connector to PC RS232.
But, I'm REALLY hoping that someday you will elaborate in length about the
MS-DOS 2.11 and 3.31 OEM configuration capabilities and limitations!