This is an over-designed lid for Ratiafak's case for the STLink v3 Minie.
(As Ratiafak says: Not to be confused with STLINK-V3MINI. They are two separate things)
The blender file includes Ratiafak's case (converted from the original STP using PrusaSlicer into STL, then imported) as well as the lid. Ratiafak's original file (stlink_v3_minie_case.stp) is also included.
The STL is ready for printing, just make sure the flat part is on the printbed.
The author remixed this model.
I've added a lid. The original case is unchanged.