MacBookPro 2019 16inch i9 Ugreen USB-C adapter SD Card Formatter 5.0.1 FAT32 formated all cards using ridgecrop piece of software 8192 Fille Allocation Unit Tested using h2testw_1.4.zip Toshiba 40MB/s SDHC U1 16GB Writing speed: 12.4 MByte/s Reading speed: 39.0 MByte/s Toshiba Exceria SDHC U1 16GB Writing speed: 12.7 MByte/s Reading speed: 74.4 MByte/s Verbatim SDHC U1 16GB Writing speed: 10.2 MByte/s Reading speed: 74.1 MByte/s
