I can accommodate color changes for white, black, and red after purchase if you leave a comment. This is a custom-made 3D printed cover for a USB power supply unit for the WonderSwan Color and Crystal. (This is a set of the power board and the cover) Conventional Chinese-made power boards had tall components, causing a bulge like a regular battery case, but a new power board appeared around the end of 2024, with lower component heights, allowing for a flat cover to be attached. I printed it as neatly as possible, but it's a layered print, so it has a slightly jagged feel, but please understand that this is to be expected. With translucent colors, the LED is visible, and the printing seams are slightly visible, which is a current product specification (see photos). Opaque colors like white, black, and red make the LED almost invisible (black is practically invisible). Power is supplied via a USB-C connector, and a standard 5V output is acceptable (USB-PD is not supported). Only the power unit and board cover are included. The board cover is made of PLA resin and is sensitive to high temperatures. Please do not leave it in a place that exceeds 40 degrees Celsius, as it may deform. Other colors will depend on the availability of affordable filament, so if you have a request, please leave a comment and I will check if it's possible. For those who already own a power board: If you only want the cover, please ask in the comments. However, due to individual differences in board soldering, the metal fittings may float, and the cover might not fit as is, so this is for those who can modify it by trimming, etc. Currently Ver.0.47, and the shape is being reviewed regularly.