cloud service delivery is developing rapidly, moving a lot of data storage online and getting as you use it. USB drives have not been used for many years. Some time ago, I had to use a USB drive because of work needs. I thought that a USB drive might only be used once a year or two, so there was no need to spend very expensive money to buy a USB drive, so I decided to go to Pinduoduo to buy a USB drive that costs less than 50 yuan.
results are not searched, but I was really surprised when I searched. Enter the keyword "U disk" to bring in the eyes "2TB large memory, USB3.0, and the price less than 30 yuan", which makes people want to click in to learn about it.
Yes, I couldn't resist the temptation. I clicked in and learned about it. I was attracted by its high performance parameters, cost-effective price and description. In addition to 2TB+USB3.0, also supports 30-day trial, two-year replacement, and five-year fixed insurance. At least this is what the product page is written.
so, I was moved and chose to place an order, which cost a total of 39 yuan.
I admit that the fundamental reason why I was moved is that I was greedy for cheapness and I was also curious. I knew it was a pit, but I still jumped in, wanting to see how deep the pit was.
Delivery and express delivery are very fast. I received it in two days. After receiving the USB flash drive, I had a little surprise. The material is real metal. I also sent an adapter for port A and port C, and a silicone protective cover.
, do you think it's worth it? Next, whether there is any failure depends on the performance of the USB drive.
mainly checks two aspects, 2TB and USB3.0.
Actually, I have a psychological expectation. This USB drive cannot have 2TB. As for USB3.0, I still have a little hope.
without saying much nonsense, just start verification. The packaging of
is very simple, just a small plastic pack. There is no logo on the USB drive, only the words "2TB" and "USB3.0".
can be inserted into the computer and you can clearly see that there is 2TB of memory. You can also see it by checking the disk properties. The general method is definitely not to find the problem.
Next, I copied a 1.5GB file into it, which can be copied into it. After seeing that there is no problem, I copied a 130GB super large file into it. In this trial, this guy has not yet shown his original shape, but his speed fell by cliff, falling to dozens of KB. The time required for to display is 8 hours. Could it be that its actual memory exceeds 128GB?
There is no way, so you can only download the software mydisktesttml2 to directly detect whether it has expanded capacity. But unexpectedly, when the software wants to detect it, it is accidentally exited.
At first I thought the software was just a crash, but it was not until I tried it ten times and changed the software version in the middle, and it was not possible that I realized that the manufacturer may have tampered with the USB flash drive, so that the mainstream software could not detect . So I borrowed a USB flash drive from a brand at the same time, and the first time I plugged it in and it could be detected normally, which also confirmed my idea.
Since mydisktest has been blocked by the USB flash drive manufacturer, I can only think of another way.
so I used the 360 U disk identification device. I could start the detection by clicking on the software. The process was normal and it was detected quickly. The U disk suddenly showed its original shape, only 64GB . In order to ensure accurate detection, I also checked the borrowed brand USB drive, and the test results were accurate.
Now it is certain that this 2TB USB drive has been expanded, and the 2TB is reduced to 64GB, a 31-fold difference. Fortunately, has not been reduced to 16GB. If it is 64GB+USB3.0, this price can be barely accepted.
Is it true that USB3.0? When
was copied, it found that the speed was really slow. When copying 1.5GB of data, it could be maintained at around 17-19MB/s. The process fluctuations were relatively small (it stabilized after two fluctuations). However, when copied 130GB of data, the transmission rate did not exceed 10MB/s. The longer the time, the lower the speed was limited, and dozens of KB of transmissions were transmitted.The reason for this is that
is that by limiting the transmission speed, the data larger than the actual memory of the USB flash drive cannot be transmitted, so that the USB flash drive is full and the capacity expansion problem will not be detected. I have to say that manufacturers are getting smarter and smarter nowadays.
Generally, the actual transmission rate of USB3.0 is around 50MB/s. It is obvious that this USB disk is not from the USB3.0 protocol. Judging from actual tests, it does not exceed 20MB/s, which means that even USB2.0 cannot keep up (the actual speed of USB2.0 is 20-30MB/s). To a large extent, this USB disk uses second-hand recycling particles.
In order to verify again, was detected by ChipEasy software, and the display results also prove that my previous statement was correct. The protocol is USB2.0 and . As for why manufacturers dare to write USB3.0, they probably used Disk 3.0 to fool ordinary people.
In addition, by checking the interface of the USB drive, you can also determine that this USB drive is USB2.0, USB3.0 has 9 pins, while USB2.0 has 4 pins, and has 4 pins, and has made a USB3.0 blue .
Through the above in-depth understanding, it can be confirmed that this is a 2TB USB3.0 USB drive with expanded capacity and virtual labels. The parameters of virtual labels are listed in order to catch the eye.
Then, I went to JD self-operated store to check out the Kingston brand USB drive. The result was also 64GB of memory, and it was USB3.2. The price was 29.9 yuan, which was 10 yuan cheaper. In this way, Pinduoduo's "2TB USB drive" is not cheap at all. I decisively took the 54.9 yuan Kingston 128GB USB drive. After all, the brand is still more guaranteed.
When buying things, don’t be attracted by some words. Merchants are also using this to stimulate consumers to purchase. I think there are quite a lot of sales of 2TB USB drives like this.
To sum up, Pinduoduo's things may not be cheap. Just like this USB drive, it is actually much more expensive and not a brand. This is just what we can see. I don't know if I cut corners when I can't see it. If I want to use it with confidence and use it for a longer time, try to choose a brand, and the price is not much, and some are even cheaper.
