It is a regular Blue 3.5 inch Uno Shield. Available from anywhere.
1. Install MCUFRIEND_kbv and Adafruit_GFX
via IDE Library Manager.2. Plug Shield into MEGA2560 as Nature intended
3. Run
all the MCUFRIEND_kbv examples.
No, official UTFT does not support ILI9486 via 8080-8 interface.
If you confirm the controller ID, I can probably show you how to alter UTFT library.
Seriously, I just searched for "ILI9486" and found
this blue Uno shield immediately.
Posting a clickable link means that any reader can find the URL whether on PC, tablet, phone, ...
Much easier than finding a camera, photo etc, ...
David.
Edit. The text and description on that Ebay link is pure fiction. But the pcb photo matches your shield. (Ebay, Ali, ... shops often post rubbish text but human eyes can recognise photos)