The Huawei CF22R 2-in-1 card reader reads slowly
Applicable products：
HUAWEI Y7a(huawei p smart 2021 dual card 4gb+128gb)，HUAWEI P smart 2021(dual card 4gb+128gb)，HUAWEI Y9a(dual card 8gb+128gb)
Applicable products：
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| The Huawei CF22R 2-in-1 card reader reads slowly |
The read rate of a 2-in-1 card reader depends on the card and device it works with. Refer to the following for details.
Read rate |
On devices supporting USB 2.0 |
On devices supporting USB 3.1 Gen 1 (USB 3.0) |
|---|---|---|
Nano memory card (NM card) |
10 MB/s to 40 MB/s |
80 MB/s |
Class UHS-1 or higher TF card |
10 MB/s to 40 MB/s |
80 MB/s |
Class 4/Class 6/Class 10 TF card |
10 MB/s |
10 MB/s |
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