Apple USB-C to SD Card Reader
USB 2.0
Question about Apple USB-C to SD Card Reader
The Apple Card Reader can only read SD cards up to UHS 2 (funnily enough, you can also read UHS 3 with the Lightning adapter...). Is there also a card reader that can read UHS 3 SD cards on the iPad Pro 2018? Thanks for tips
I think you misunderstand or confuse Roman numerals with Arabic numerals:
UHS-I and UHS-II vs. UHS-1 and UHS-3
The symbols used for the UHS speed classes are easy to misunderstand: While UHS-I and UHS-II refer to the bus speed, i.e. guarantee that the corresponding products achieve a data transfer between memory card and device of 104 (UHS-I) or 312 MByte/s (UHS-II), the labels UHS-1 and UHS-3 indicate the minimum speed at which data can be written from the device to the memory card: 10 and 30 MByte/s, respectively.
The following applies: Devices that support UHS-1 or UHS-3 also support UHS-I or UHS-II.
UHS-I and UHS-II vs. UHS-1 and UHS-3
The symbols used for the UHS speed classes are easy to misunderstand: While UHS-I and UHS-II refer to the bus speed, i.e. guarantee that the corresponding products achieve a data transfer between memory card and device of 104 (UHS-I) or 312 MByte/s (UHS-II), the labels UHS-1 and UHS-3 indicate the minimum speed at which data can be written from the device to the memory card: 10 and 30 MByte/s, respectively.
The following applies: Devices that support UHS-1 or UHS-3 also support UHS-I or UHS-II.