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Unfortunately, Aliexpress links go dead quickly. Perhaps you mean something like these: https://www.aliexpress.us/item/3256806952052632.html https://www.aliexpress.us/item/3256806952052632.html https://www.aliexpress.us/item/3256806950028548.html https://www.aliexpress.us/item/3256806950028548.html I'd be interested to know if they can really up/down convert voltage as appropriate for USB-C.