This is a case created for the NanoPC-T4. The development board is fixed with four 2.6x6 flat-head self-tapping screws. Please download the STL file, slice it, and print it for use

The fixing method of the upper and lower shells is a snap-fit. After the snap-fit is optimized, the effect is very good. However, when opening it, please don't use excessive force
V2: Optimize the gap between the buckles and the IO holes
V3: Add GPIO ports and optimize the latch mechanism

Note: The cover is for the V3 version. The V2 version does not have a GPIO opening and is overall taller