WD MyCloud EX2 Ultra fan cover replacement, noise reduction, 70mm version

As a user of the WD MyCloud EX2 Ultra network drive, I was very disappointed with the noise made by the very small internal fan. At night the noise was totally unacceptable, especially when the drive was performing a sync or a large file transfer was running. So I disassembled the drive, removed small fan, and plugged a 70mm fan into its connector. This worked very well! Unfortunately the 70mm fan did not fit inside the case in any way. So I designed an adapter that encloses the new fan inside and replaces the top cover of the drive. Thanks to this the temperature inside the case is lower and the fan can hardly be heard, it runs much shorter and at a lower speed. The adapter is not permanently attached to the case, it rests on the case under its own weight. Please note that the fan should be mounted in such a way that it will suck warm air out of the case, not push it into the case!

To remove the factory housing shell you will need to find the four latches at the front, top and bottom. When you gently push them in you will be able to slide the whole shell forward. Then unscrew the two screws at the top and two at the bottom to remove the inner front bracket. Don't forget to unplug the cable that connects the PCB to the LEDs on the front panel. At this point you will have access to the fan plug (just slide it out). I left the old fan inside, the new one simply plugged into the factory socket and its cable routed sideways between the inner metal drive casing and the outer plastic shell of the housing

EDIT: 16.05.2022

You may find 80mm version under this link: 

https://www.printables.com/pl/model/207208-wd-my-cloud-ex2-ultra-fan-cover-replacement-noise-

https://www.thingiverse.com/thing:5386932

120mm version is avaible here: 

https://www.printables.com/pl/model/478965-wd-my-cloud-ex2-ultra-fan-cover-replacement-noise-

https://www.thingiverse.com/thing:6020628

140mm version is avaible here: 

https://www.printables.com/pl/model/452083-wd-my-cloud-ex2-ultra-fan-cover-replacement-noise-

https://www.thingiverse.com/thing:5968977

 EDIT: 04.05.2025

92mm version is avaible here: 

https://www.printables.com/model/1241987-wd-my-cloud-ex2-ultra-fan-cover-replacement-noise

Print instructions

Printer Brand:

Prusa

Printer: 

I3 MK3S

Rafts:

No

Supports: 

Yes

Resolution:

0,2

Infill: 

15%

Filament:

Plast-Spaw PLA, PETG, ASA, ABS Any 

Notes: 

You may use PLA filament, there are no very high temperatures in the drive. Supports needed only under fan mounting points - please take a look on the pictures.