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Test the memory card for sufficient capacity?

Method One:

Use H2testw for testing.

H2testw download address: http://mydown.yesky.com/pcsoft/442704.html

Method Two:

A simpler method, such as testing 8GB, can store over 7GB of music or video if all can be read normally, indicating that it is a sufficient card.

If it's a memory card that's been expanded, only the files stored at the beginning can be read (specifically, it depends on how much it's expanded). The files stored at the end are damaged and cannot be read.

TF card, also known as MicroSD card (small card), differs from SD card (large card). MicroSD card is about one-fourth the size of SD card and is one of the smallest memory cards currently in circulation. It is suitable for mobile phones, dashcams, car navigation systems, audio systems with built-in cards, dance mats, and video equipment. MicroSD cards possess all the advantages of traditional SD cards and can be converted into SD cards with SD adapter cards. They are compatible with devices that use SD cards and comply with the specifications of the SD Association.

Product Grade Standards:

C4=Class4=Low write speed of 4M or more per second;

C6=Class6=Low write speed of 6M or more per second;

C10=Class10=Low write speed of 10M or more per second;

The product's label indicates the amount of memory it is equipped with, rather than the actual usable storage capacity.

Actual usable storage capacity reference: Neutral Card

 2GB approximately 1.83GB;

 4GB approximately 3.71GB;

 8GB approximately 7.43GB;

 16GB approximately 14.8GB;

 32GB approximately 29.6GB;

 * The storage capacity of 1MB is calculated as 1,048,576 bytes. A portion of the storage capacity is used as a management area, so the available storage capacity is as described above.

Origin: Most produced in Taiwan

Dimensions: 15mm(L) x 11mm(W) x 1mm(T)

Weight: About 0.41g

Defect Rate: About one in a thousand

Interface Type: TF Storage Card Standard Specification (8-pin)

Working Voltage: 2.7～3.6V

Working temperature: 0~55°C

Save temperature: -20～65°C

Humidity Preservation: 30～80%RH (No Condensation)

* "H2testw" Full System Test Screenshot Reference (TF4GC4):

The actual reading and writing speed depends on the device used and the size of the document, etc.