Fui atrás de quem mais tem essa pegadinha:
There is a proprietary UHS-I extension primarily by SanDisk that increases transfer speed further to 170 MB/s, called DDR208 (or DDR200). Unlike UHS-II, it does not use additional pins. It achieves this by using the 208 MHz frequency of the standard SDR104 mode, but using DDR transfers.[88][89] This extension has since then been used by Lexar for their 1066x series (160 MB/s), Kingston Canvas Go Plus (170 MB/s) and the MyMemory PRO SD card (180 MB/s).
Eu estava olhando esses Lexar.