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Product Description
This is a replacement switch blank for various 1980s BMWs, designed to house 3 USB charging modules. The cover is held on with two M2 screws. Fits e28 and e30 among others.
The USB charging modules are widely available through Amazon/Ebay/AliExpress. They vary slightly in their dimensions so you may have to shim or file slightly in order to get a perfect fit.