This cap lets you mount Waveshare 2.1" USB Monitor to the Titan AIO pump.
In my opinion, the model with the top cable hole is better for cable routing, but I also added a model with the side hole if you prefer that.
For me, a screen tolerance of 0.3mm worked great, but in case your printer/filament is not well calibrated, models with 0.5mm tolerance are also available.
Lastly, you'll need M4 screw to secure the display. I created model variations for both 6mm and 8mm screws.
Currently, only STL models are available, but I'll add STEP files a bit later.
All models should be printed with the cap front facing down. Models for 6mm screw can be printed without any supports. Models for 8mm may need support for the screw hole for a tidier look.
I printed it with Prusament Galaxy PLA and 0.16 layer height.

Insert the screen in the cap from the back, align screen mounting hole with the screw hole and secure it in place with M4 screw.

Insert the cable and plug it into the screen with the help of tweezers.

Attach the cap to the pump and plug it into the USB header. You can push some excess cable into the cap for a tidier look.
The author remixed this model.
Added mount for the Waveshare 2.1" USB Monitor