In message , at 13:26:07 on Sun, 24 Nov
2019, Peter remarked:

https://www.ebay.co.uk/itm/263483336531
This apparently changes the plug on the end of a male DVI cable
to.... er a male plug about 1 inch further away.* So, it's a very
small extension lead?* Or a gender changer that well.... doesn't.

The only valid use I can think of: Just what you need if your setup
causes a cable you already own to be 1" too short. If the equipment is
rack mounted, the only options might be the adapter or a longer cable.
The adapter is cheaper than buying a longer cable. Admittedly not a
common scenario!

Alternatively, if you have some equipment with a recessed socket,
adding one of these permanently will make it closer to the surface
and easier to plug/unplug a cable into.
--
Roland Perry