I purchased a Soarer's converter from Orihalcon specifically to run my DC-2014 and it works without needing that additional pin. However- that being said, keep two things in mind:
1) Don't make the stupid mistake I did a long time ago and assume that you can hot-plug the keyboard. It needs to be brought up with the system, unfortunately.
2) If memory serves, sometimes it
didn't actually work when booting, in which case I'd power down the system, unplug the converter + keyboard from the computer and plug it back in, and try bringing up the system again. The system this was on used the grub bootloader, so I could tinker with keystroke testing there before booting the OS.
Thomas, you're absolutely right. Class and style. They are wonderful to type on. Can't believe I almost sold mine (its story is here if you're interested-
https://klikkyklik.wordpress.com/2016/04/20/dc-2014/ ).