Check Lexar Serial Number

[Mariela Coxon]

Iwas looking for something with a decent amount of performance and a reasonable price, and a side positive was if it was not already tested, because that means another blog post for all of you.

The silkscreen text was a very sharp, bright white, and it looked good. A review of an updated 633x card, which is part of their present lineup, shows rear markings that match the same formatting and are made in the same place. Looks good so far.

Bouyed by this, I decided to random fill the card a few times, then reformat it again to see if I can recover the corrupted sectors. After another format, the results seem to show less failing memory.

This seems to be indicative that the card has entirely run out of remappable flash sectors to the point it had exhausted all spare sectors and could not continue to function, dropping back into read-only mode to allow users to recover their files and move on to another card. All of this happened in under 10 cycles.

The I got two new in package drives and one of the two was blank and write protected out of the package. When partition deleted, and new one made, the drive could be written to. The other drive worked ok on same computers.

I found some Lexar microsd to usb adapters that were defective when made.

one had to be 1/2 out to be detected / work in some usb ports. I have never had a usb device have this issue. This issue only afflicted some usb ports.

New issue. One of my Lexar 633x cards. I use it to record videos on a go pro. when I go to copy files off later, one gets messed up. . But only one. I will have to run an extensive check of the the card, but I expect to have to RMA it.

My first Lexar 633x card locked up and then I ordered another one intending to send the first one back. Then the second one locked up but the first one, after reformatting in my Inspire 1 drone , started to work. I was all set to send the second one back but then they both locked up. After reading the prior comments from some rather brilliant testers I think it may be the reader causing the problems. I use the cards in my Inspire 1 drones and depend on them to capture my flight videos. After reformatting them in my drone camera, one worked and the other refused to be reformatted, claiming it was write protected.Very frustrating! Thanks for all your brilliant advice.

I looked it up I was surprised 200gb existed. I never noticed them in any store I was at. But then again I am mainly looking at 128 gb as my go pro only supports upto to that size. and ads for memory mainly focus on 64 128 256. So a memory card made of a 128 and 64 mb is still a surprise.

I wonder if a 200gb would work in a go pro 4 ? anyone know?

1st they denied I had sent in a u3 card. I emailed them pics

then They said they no longer made u3 cards only u1

I gave them the pare number of a u3 card listed on their site as still current. also checked and it was foe sale at most places.

they said they cannot replace a slower card with a faster one. They can only replace a faster card with a slower one.

then they refused to replace the slower card with a faster one of u3.

Then I filed in small claims court 1 week later.

two weeks later they sent me a letter saying I was stupid for thinking I should expect to get a u3 card since they have discontinued the u3 card . The letter went on to say other stuff. Everything in the letter was great. it was like a confession in writing from them. I cannot wait to go to court. I am now hoping for triple damages since it is intentional. .

While many of us in the photography world spend time talking about the necessity of dual memory card slots and their importance on modern digital cameras, few seem to truly understand bigger problems related to storage media. One of the biggest issues that the photography community faces today is fake memory cards that show up in many online stores, including the most popular ones such as Amazon. Some of these fake memory cards have no-name brands, but most of them look legit under big brand names such as SanDisk and Lexar. The problem with fake memory cards is that they either completely misrepresent their true capabilities, or contain much less storage than advertised, which can result in storage failures with unrecoverable data. Understanding which memory cards are real vs fake is extremely important, which is why we decided to write this article.

Make sure that the back of the package contains information about the product such as its specifications and card speed, as well as all the appropriate labels, warranty info and a proper UPC, as shown below:

The location of the serial number will vary depending on memory card type and manufacturer. If you have a SanDisk card, take a look at this article, which details the possible location of serial numbers on its storage products.

If your operating system does not actively report MB/sec on read and write operations, you will need to use third party software. For example, on Mac, try Disk Speed Test by Blackmagicdesign. It does a decent job at reporting read / write speeds, as shown below:

If the memory card you are using is fake, it will report errors and show how much actual data was written and read from the card. In the case above, I used a genuine 16 GB SanDisk Extreme Pro memory card that I retired a while ago and as you can see, the software not only showed zero errors, but also reported an average read and write speed of 70 MB/sec. If you perform a similar test and you see errors, you are dealing with a fake or a failing memory card!

The last test is the most important and it will surely reveal any problems you might have on any of your memory cards. Before you put your memory cards to use, I would highly recommend to run this software!

Nasim Mansurov is the author and founder of Photography Life, based out of Denver, Colorado. He is recognized as one of the leading educators in the photography industry, conducting workshops, producing educational videos and frequently writing content for Photography Life. You can follow him on Instagram and Facebook. Read more about Nasim here.

Recently bought 2 x 256gb cards from GEEK on line, then filled them to 100% with old movies, then checked to see if they were there. The directory as well as the time taken to fill the sd card looked legit, but once checked, the one card only had 8gb and other identical one has 16 Gb. Complained to GEEK and only able to speak to a computer who had me pressing buttons, and eventually the computer agreed to refund to credit card BUT not the exorbitant postage fee.

Please enter the S/N number to check the warranty and product specification.

The warranty period starts and is based on the manufacturing date.

The product warranty can also be stated by proof of purchase.

For Team Group products other than SSDs and memory modules, you can refer to product warranty to check warranty period.

Team Group Privacy Policy

Dear users, Team Group respects your right to privacy. This Privacy Notice mentions about what data we will collect and how we will used it.

To find out more, you can go to Team Group Privacy Policy at our main website.

As mentioned, the Lexar is based on their custom controller which is labeled DM620. Not much is known about this controller, except that it can handle 3D TLC NAND and is DRAMless. The NAND on this drive is Micron 96L TLC (B27B), the same variety of NAND as used on a number of 2018-era PCIe 3.0 NVMe SSDs.

The 1TB drive we are looking at is at the top of the product stack, with sequential read performance rated at 3300 MB/s, and sequential write performance rated at 3000 MB/s. By PCIe 3.0 standards these are fairly high-end numbers, so Lexar has some performance claims to live up to. Endurance is a bit low at 500TBW for our 1TB drive. In contrast, the Samsung 980 1TB and WD Blue SN550 1TB are both rated at 600TBW.

Our testing uses the Lexar NM620 1TB as the boot drive for the system, installed in the M.2_1 slot on the motherboard. The drive is filled to 85% capacity with data and then some is deleted, leaving around 60% used space on the volume.

The important part of this is that we are using the same test setup for our M.2 drives so we can see what happens across the population with a consistent test setup. We also install the drives package to the motherboard (with a photo stop in-between) and do not perform any special configuration to simulate the real-world user experience. Again, same system, using automatic Windows configuration on all of these drives because we want as close to the real-world results as possible.

fuzzyfuzzyfungus,

I just peeled back the sticker, the NAND is Micron 96L TLC, same as used on a number of very nice PCIe 4.0 NVMe SSDs. I would wager it is the controller holding this whole setup back, but I have almost zero insight into the controller itself since none of my customary utilities can interrogate it.

Mark,

It is possible the drive is throttling during the initial load when it hit the 70C temp, but not during the rest of benchmarking as the drive was allowed to cool a bit prior to benchmarking. Also, the drive *began* writing at around 850 MB/s, it is not like it had a brief burst at 3300 MB/s and then slowed down, it *started* slow.

A guy ran a SSD endurance test on a Sheiknak 120GB SSD and it went about 320TB before completely dying after 3 months. A 256GB BX500 went over 1PB before it died after a year. They found that the longer you write on it, the slower it starts to get.

I just checked my NM620 1TB in crystaldisk mark and got 3481 read and 3168 write.

It is also worth noting that I only use 270GB of capacity, the rest is unformatted (I do not need more space for now). My C drive only has 58GB free space. So I should have even worse results than you.

So I think in this review/test there was some problem either with that batch of drives, or the motherboard had a problem, or the PCIe lines are full, or there was a thermal problem. Or maybe there are batches with different memory chip brands, like in GPUs were Micron alwas perform worst than Hynix.

3a8082e126