I opened it up. Will mark results here for anyone else who has this question.   Confirmed - there is a 6x2 supplementary power connector and IN ADDITION a 6 pin one.
Hi,I bought an XPS 8910 desktop in 2016 and it came with the Nvidia GTX 745 4GB (not a full sized card.) Just wondering if there is a spare 8 pin cable in the case to connect a full sized card?   Thanks, Matt
XPS 8910, spare 8 pin connector?