WP8.1 update SD card support has minimum requirements

Computer shop news: According to the computer network user @tommyus said in the forum, the Microsoft developer documentation shows that the SD card supporting WP8.1 needs to reach the minimum standard of reading 16M and writing 6M. Otherwise, the system cannot support the installation of the application to the SD card. The WP8.1 system will automatically detect whether the speed of the SD card is up to standard, to enable or disable the function of installing the application to the SD card.

The following is the SD card data reference:

The transfer speed (write speed and read speed) is defined as [Class2 (2MB/sec), Class4 ( 4MB/sec), Class6 (6MB/sec), Class10 (10MB/sec)] (Minimum Speed)

The performance of the SD card in the SD2.0 specification is divided into the following levels, different levels. Can meet different application requirements:

Class 0: including lower than Class 2 and unlabeled Speed ​​Class;

Class 2: can meet ordinary MPEG4 MPEG2 movies, SDTV, Digital camera shooting;

Class 4: Smooth playback of high-definition television (HDTV), digital camera continuous shooting, etc.;

Class 6: Meet the requirements of SLR camera continuous shooting and professional equipment;

Class 10: Storage needs to meet higher rate requirements.

High-speed memory card: several times faster than Class 10.

At present, the SD card of WP8 system can use Class 10, and the WP8.1 system needs high-quality Class 10 card or higher speed high-speed memory card. Microsoft is doing this for a smoother experience. In addition, whether the application can be installed on the SD or the developer is allowed.