How can I tell if a memory card is old or new 5 and if it is old?

Look at the gold finger of the memory stick, the scratches are not heavy, and there will be more obvious traces of the memory that has been unplugged and unplugged many times, and the other is to use software to measure, generally, if it is the mainstream memory, it doesn't matter if there are a little scratches, generally before sales, there will be traces if there are to be tested.

You can find it in hynix. You are now a DDR333 memory module, and there is no problem with another DDR400. The motherboard will automatically downclock the DDR400 to DDR333. The overall performance will be improved compared to the original.

Generally speaking, if the gold finger is rusted or aged, or it looks not bright enough, or there are too many traces of the gold finger, it can be said to be second-hand.

With CPU-Z detection, after turning on CPU-Z, there is a week year in the SPD option, which is the production date.

Generally speaking, if you are afraid of buying second-hand, you can choose to buy it from a reputable brand store.

In an honest store, the packaging is intact, and it is generally visible from the surface whether there are traces of dismantling.

You can also try to install the card on the mobile phone, and you can see that it is a blank card; In addition, it is better to install the next software that can view hidden files and system files, install it on your phone, and when you insert the memory card, you can use this software to see if there is anything inside. As for the judgment, everyone understands it.

Some brands of SD cards can be indicated on the outer packaging, such as Sandisk, SanDisk, its outer packaging will indicate the speed level of the product, if you are interested in that one, you go directly to their ***** to see, it seems that everything is full.

Class 4 is considered high-speed.

Of course, there are also class 6 and class 8

Just look at the numbers in the small circles on the card.

Detect the real capacity of the real and fake USB flash drive and mobile phone memory card.

It's also because I'm worried that I'll buy a fake, so I found such a gadget on the Internet - "mydisktest", which is specially used to test the real capacity of U disk or mobile phone memory card, mydisktest is a U disk SD card CF card and other mobile storage product expansion identification tools, it can easily detect whether the storage product has been expanded capacity, shoddy.

It can also detect whether the flash flash memory has bad blocks, whether it uses black chips, does not destroy the original data of the disk, and can test the read and write speed of the U disk. It is a must-have tool for you to choose USB flash drives and memory cards.

In fact, a long time ago,I bought an 8G capacity U disk on the stall.,But because I was young at the time.,I don't know if this thing is fake.,That is, I didn't think much about it when I simply checked the attribute on the computer8G.,But after a while,I found that the files inside would become garbled.,Or all of them will become exe format.,And then I knew when I looked at the information on the Internet.,It turns out that many people have had this situation.。

The reason is because the U disk itself is not so large, and the things you store in it are garbled and can't be opened.,Later, it was found that it was a flash flash card transformation of more than 500MB with a tool.。 Later, I went to the computer city to teach me to use such a small tool to detect the actual capacity of the mobile disk, and I knew the great use of this thing when I bought a USB flash drive mobile phone memory card.

Hope it helps. Hope to adopt, thank you!

Little sister, if you go to a regular store to buy an invoice, you are not afraid that it will be fake! It's not fake! Slide and flip phones are generally more prone to bad cables, and straight boards are better. The touch screen generally won't break, as long as you don't fall hard.

It is best to use software to identify the authenticity, it is difficult to see with the naked eye! When you buy it, it's best to look at its gold finger, if it has been used, the gold finger will be a little scratched, it's best not to buy it, which mobile phone stores are now many of the memory cards that come back.

Watermarks (generally indelible).

Go to the next PC kit and back up all the lead and west in the phone to the computer folder. Then change the memory card, and use the PC kit to transfer the Sakura stuff in that folder on the computer back to the hand-spindled machine. I've tried it, the PC suite works very well, and there won't be a problem with lz.

On the top five floors, I transfer my 2G card to 8G, no problem passing by! It has nothing to do with the PC suite, it's just a simple copy and paste, and there is one more hidden file!

What songs and data do you fill the memory card, after installation, eject it, and then reconnect it to the computer to see what data in it can be viewed normally, and no damaged files can be done.

The memory card has an anti-counterfeiting label on the back. Just double-check. In fact, not only checking the goods can distinguish the authenticity of the goods, if you are not professional, you are a rookie in the digital industry, it is difficult to practice the sharp eye to identify the real and the fake through one or two purchases.

You might as well try to use your life experience and common sense to "distinguish the truth from the falsehood of others". It is whether the merchant is worthy of your trust. Don't rush to place an order, talk a few times.

If he is an honest businessman, then he will stick to his integrity as if he were his life. That is, his commitment to customers is real. I would be relieved to buy his goods!

SD card is small in size, and the average consumer will not have much understanding before purchasing, so it is difficult to distinguish from the appearance

The first thing is to look at the memory card itself, sandisk** memory cards are labeled with laser color changing on the front, and laser color changes will occur at different angles.

The second is the domestic ** licensed goods ** card, which is similar to the above plastic packaging form, but the words "5-year guarantee" at the bottom right and the Japanese have been changed to the 5-year warranty shown by the graphics.

In addition, it can also be easily identified from whether there is a notch at the bottom of the SD card, because the number above the origin of the back of the SanDisk brand SD card is unique, and the authenticity can be checked through 800**, but it is said that this query system has not yet been done.

This cannot be avoided. As long as the new card can read and write data normally, it means that the card is normal. As for the loss of the contents and the inability to find the card, one is the problem of the card itself, and the other is the problem of the computer.

SD cards do have a big difference, I bought two SD cards are parallel goods, one is bought online, one is bought in a physical store, the things in it are often, automatically can't be read, sometimes z automatic deletion, depressed to death, I still picked up expensive buying, I didn't think it was still a fake, to buy authentic advice don't go to ** on the buy, physical stores to find familiar, generally will not be willed.

SDHC is a high-speed card, class4 is faster than class2 speed bucket envy, good pins and limbs kingstone's line card is very easy to identify, the card is beautifully printed with a beautiful font, the text is clear, there is no roughness, and the font printing of the fake card is rough. The lock button on the bank card tray is gray, and the fake card is white.