wah testing me..... I return everything to my lecturer already like 20 years ago!
Trying to recall.... (YES I KNOW I AM MAKING A FOOL OUT OF MYSELF.... THANKS TO POOMOON)
as long as your ampere rating on the power adaptor is sufficent, you can connect in parallel.
My adaptor has a limit of 2.5A. My fan is only rated 0.37 A. So even if I have 4 fans connected in parallel, the total amps is only 1.48Amps
So the adaptor can still support. (I think the impedance has lowered though..... WTH... reliving all my nightmares.....)
I can be TOTALLY WRONG..... Better let Sherman verify that this is correct. He is in this line.
One more question like this and I will shoot you Poomoon ..... Lol kidding.....