惠普 F760 无法进入设置界面？
1. TransFlash
Speed Class: Class 10
1.1 Speed class rating
https://en.wikipedia.org/wiki/Secure_Digital
The SD Association defines standard speed classes for SDHC/SDXC cards indicating minimum performance (minimum serial data writing speed). Both read and write speeds must exceed the specified value. The specification defines these classes in terms of performance curves that translate into the following minimum read-write performance levels on an empty card and suitability for different applications:
2. 格式化 T-Flash or TF
格式化之后正常使用，进入设置界面。
针对闪迪 TF 卡，可能存在兼容性问题。