Sell YC-310 OTG card reader USB 2.0 multi-function SD card 64g Mobile TF best price

common problem: 1. About the reader transfer, read speed. A: The card reading speed is related to the C6/C10 memory card. The C6 card reads 11-16MB/S and writes to 6-8MB/S. (Example:C10 SDcard Read 19-21MB/S Write 24-26MB/S (Example: C10 TFcard Read 19-21MB/S Write 24-26MB/S 2. About the problem of card reading capacity limitation. A: There is no capacity limit in accordance with the USB standard, and 64G/128G/256G memory cards can be read. The OTG function can also be used for 5% of the phone's power. 3. About the OTG function. A: You can query the parameters of the mobile phone, query the Internet, and ask for after-sales customer service inquiry. 4. About certification. A: It is FCC certified and meets CE/ROHS standards.