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Our company only sells industry-recognized high-quality versions, with a small capacity defect rate of about 0.003%! The large capacity defect rate is about 0.01%!
All products sold support testing with all market-available testing software. We recommend using the authoritative disk software 'H2testw' for detection, ensuring that the upgrade card has nowhere to hide, and eliminating any concerns you may have about the quality of our products.

MicroSD card is a very small flash memory card, which is mainly used in mobile phones. However, due to its small size and continuous increase in storage capacity, it is now used in GPS devices, portable music players, and some storage devices. Its size is 15mm x 11mm x 1mm, roughly the size of a finger, making it one of the smallest flash memory cards available today. It can also be connected to an SD card slot using an SD adapter.

*If using a 3.0 reader with a 3.0 interface, the test data is even better. The actual speed depends on the devices used and the size of the documents, etc.

Special Reminder

The actual usage capacity of the 2GB memory card is about 1.85GB, as computers use binary and manufacturers use decimal when producing.

The computer calculates it as 1MB = 1024KB, but the manufacturer calculates it as 1MB = 1000KB.

2GB is about 1.83GB, 4GB is about 3.7GB, 8GB is about 7.3GB, and 16GB is about 14.6GB.

Class Rank

Class rating is also an important indicator for SDHC cards, representing the quantified symbol of transmission speed. Different levels of memory cards can meet the needs of different users. For example, SDHC cards are divided into Class 2, Class 4, Class 6, Class 10, and more powerful UHS-I levels. There is a certain relationship between Class rating and SDHC, for example, the capacity of an SDHC memory card must be over 2GB, and it must at least have a Class 2 transmission speed.

Class 2: Low write speed reaches 2.0MB/s, which can meet the needs of watching ordinary MPEG4 and MPEG2 movies, SDTV, and shooting with digital cameras.
Class 4: Low write speed reaches 4.0MB/s, which can meet the needs of smooth playback of HDTV, continuous shooting of digital cameras, and so on.
Class 6: Low write speed reaches 6.0MB/s, meeting the requirements of single-lens reflex camera burst shooting and professional equipment usage.
class 10：Low write speed up to 10.0MB/s, suitable for recording and playing full-HD TV.

How to identify a memory expansion upgrade card?

Currently, many expansion cards and upgrade cards are available in the market, including SD cards, USB flash drives, microSD cards, and memory sticks, etc., which can all be upgraded.

Upgrading means taking a capacity of 1GB or 2GB (or smaller, such as 128MB, 256MB), and falsely claiming it as 4GB, 8GB, 16GB, 32GB, or even larger capacities.

In reality, the capacity is still 1G or 2G, and buyers cannot tell whether the product has been upgraded through a computer monitor.

The current effective method is to use the 'H2testw' or 'MyDiskTest' software to perform a full disk check!

H2testw download address:

http://mydown.yesky.com/soft/utilitie/test/204/442704.shtml

MyDiskTest download address:

http://dl.pconline.com.cn/html_2/1/60/id=49281&pn=0.html

Goods received:

1. Please open the express or parcel before signing to check if the goods are damaged, missing, or incorrect items.
Damage, lack, or incorrect item risk,

After the delivery (buyer's receipt), the buyer assumes the risk, and the seller is not responsible for the above risks in any way.
Before the goods are delivered (buyer's receipt), the seller assumes the responsibility; if there is a situation where the package is signed first and then opened to check,
Buyers should request the carrier to supervise and open the packaging on the spot to inspect.

3. If discrepancies are found,
It should be timely to contact the seller and note the detailed situation on the receipt and have the carrier sign to confirm.

After-sales service: Each memory card is labeled with our family's laser logo, indicating the date below.
One-year warranty applies, but warranty will not cover any damage caused by misuse.