Due to its 90 degree angle the cable is prone to bending when it's being transported for example in a bag. The case protects it from that.
There are multiple acer charging cables out there. This case is for cables with a 3.0mm diameter and 7.5mm length.
You can compare yours to this one:
https://www.amazon.de/dp/B09N9VZC9K?psc=1&ref=ppx_yo2ov_dt_b_product_details
| case_with_stoppers.stl | 47.1KB | |
| lid_with_stoppers.stl | 30.7KB |
