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The memory card can meet the needs of different users. Taking SDHC as an example, it can be divided into class 2, class 4, class 6 and class 10, and now there are more powerful uhs-i cards. There is a certain relationship between class and SDHC, for example, the capacity of SDHC memory card must be more than 2GB, and at least have class 2 transmission speed.
Class2: Low write to 2.0MB/s, can satisfy to watch ordinary MPEG4 MPEG2 movies, SDTV, digital camera shooting.
Class 4: Low write to 4.0MB/s, can smoothly play HDTV, digital camera continuous shooting and other needs.
Class 6: Low write to 6.0MB/s, to meet the requirements of SLR camera continuous shooting and professional equipment.
Class10: Low write to 10.0MB/s, full HDTV recording and broadcasting.
How to identify the expansion and upgrade card?
At present, many expansion card upgrade cards, SD card/U disk/TF card/memory stick and other flash memory can be upgraded.
Upgrade is to label the capacity upgrade of 1G or 2G (or smaller such as 128M, 256M) as 4G8G 16G 32G or larger.
The actual capacity is 1G or 2G. Buyers can't judge whether to upgrade products by computer naked eyes.
At present, the effective method is to use & ldquo; H2testw & rdquo; or & ldquo; MyDiskTest & rdquo; software for overall verification.
H2testw download address:
http://dl.pconline.com.cn /html u 2 /1 /60 /id =49281pn =0.html
Signing of the goods:
1. Please open the express or package to check whether the goods are damaged, missing or unequal before the buyer signs and receives them.
The risk of damage, lack, and wrong goods,
2. delivery (buyer signed) by the buyer, the seller is not responsible for the above risk;
The seller shall bear the responsibility before the delivery of the goods (the buyer signs the receipt); if there is a case where the receipt is first signed and then the package is opened for inspection,
The buyer shall require the carrier to supervise on the spot and open the package for inspection.
3. if the discovery is inconsistent,
Contact the seller in time and note the details on the receipt and let the carrier sign and confirm
After-sales service: Each memory card has our own laser label with the date indicated below.
One year warranty, artificial damage, no warranty.