Ha! Like it.
@ColinTaylor It's a Sunon EF40201BX-Q18C-F99 - 12V, 1.44W, analogue as it's a 3-pin connector. I've managed to find Sunon's fan data sheet but that only has the A99, not the F99. The difference seems to be that the F99 draws twice the current of the A99 for the same speed and flow...