HP Z840 fan shroud missing a fan

[Tony_atfpodcast]

I purchased an HP Z840 on eBay, and upon inspection, I found that the fan shroud is missing a fan for CPU1. Where can I find that part?

[DGroves]

look at the shrouds existing fan's part number then search on ebay or amazon using that part number

since you do say which one your missing i can only guess it's the optional 90mm that cools the second optional CPU among other things

its "Nidec" part# T92T12MS3A7-57A03

HP#  647113-001

https://www.amazon.com/LEYEYDOJX-647113-001-Workstation-749598-001-782506-001/dp/B0B5T7VXY8

Edit: look at my reply to your bios locked thread for information on why some external usb based drives do not power on when placed inside a PC

[Tony_atfpodcast]

I did mention it was for CPU1.  Thank you for the link.