Dell does not make its own motherboards.
But they are made to its specifications.

"Lem" a écrit dans le message de news:
...
Do all Dell PCs (for the UK market) come with Dell's own
motherboards?

I am thinking of getting a Dell but I don't want to find that it uses
a Dell proprietary motherboard that may have little technical data
available.

ISTR hearing that Dell used a non-standad wiring on the 20 or 24 pin
mobo power connector. And I imagine there may be several other Dell
quirks.