Q: Why is the actual reading speed of the card reader not the reading speed written on the details page?

A:

1. Subject to the interface and performance of the host;
2. Overheating of the memory card and overheating of the storage particles will cause the read/write speed to drop. The slowdown is to protect the card from damage;
3. When the USB-IF Association formulated the standard, it indicated that this is the theoretical value, that is, the speed in the most ideal state, without any external interference and electrical loss, so few cards can really reach the limit speed.

Q: Every time I use it, the card is very hot, will it damage the card?

A: It is normal for the card to be hot, because the card reader is a bare high-speed product. The actual temperature of the card body can often reach 69 degrees Celsius without damaging the memory card. The memory card itself will respond to adjustment, the card reader is only used as a medium, please don't worry.

Q: Insert the USB3.0 C port, only the speed of USB2.0?

A: It may be that the speed of inserting the C port is too slow, causing the computer to not recognize the USB3.0.

Q: After the pictures in the SD card are deleted, they still exist, and formatting is useless. Is this a problem with the memory card?

A: If the SD card cannot be deleted, it is likely that the protection function of the SD card is enabled. There is a small switch on the side of the SD card, check whether the protection is turned on. Turn it off and you can delete files normally. If the SD card is not write-protected, and the photos still cannot be deleted, then there is a problem with the card, and in that case, a new card must be considered.