Look at this behemoth of a plug. This dock will only work on Dell Precision models as that does not look like it can be split. Nor is this plug removable from the dock unit itself, if it is the same as the other TB16 docks.
At some point I feel like you need to ask yourself if this is a good idea.
Sorry I just had to rant a bit. I've been setting up a bunch of TB16s and I need to vent after being told about the TB18's and looking at this picture of them.