Recently, due to various demands, a series of pick-and-play of storage devices began to be used. In the process, some knowledge of this direction is gradually accumulated. Baidu's information is not very timely. The update, so decided to share every device in the aunt's home.
Reasons to purchaseThe storage capacity of mobile phones has basically met the daily use, but there are some flat-panel, micro-usb interfaces in use, there is a U-disk to meet the dual-plug is more convenient, do not have to insert a variety of usb converters.
This is a share of the SanDisk Extreme OTG 64GB USB3.0 U disk.
SanDisk Extreme High-speed OTG 64GB USB3.0 U disk, read 130MB/sec, (micro-USB and USB dual interface) 159.9 yuan Jingdong direct link Actually it is not their own money to buy, I would prefer to insert usb converter
Because I bought a lenovo yoga book (haven't had time to dry single), there is only a micro-usb interface, then Jingdong do activities, Sun single to send this U disk. So I like to pick up the wool I ran to the singles, so there is this evaluation.
Appearance GalleryPackaging is actually very simple, is the general U disk paper packaging, disposable.
Below the front of the regular brand logo - SanDisk SanDisk
Intuitive can feel the appearance of U disk.
The above indicates the function:
· Release Android device storage space that supports OTG
· With a transmission speed of up to 150M/S, you can quickly transfer files between your flash drive and your computer.
The measured speed is shown in the next section.
After dismantling, there are precautions for internal use.
After opening, see the body. A little piano paint, in fact, is a glossy plastic shell.
A metal strip in the middle, SanDisk's logo on the bottom left.
The usb3.0 interface, when introduced, displays 64GB of storage capacity.
The other side is the micro-usb socket.
After entering, it happens to be blocked.
This is also the same
experience feelings For U disk, the use of experience is actually the speed, and security can only be realized after long-term use.
So this time we mainly measure speed.
Two aspects
1, usb3.0 interface speed testTest Platform: ASUS n550
Test system: windows10+16gb ram
Test Software: HDTune pro+ATTO Disk Benchmark
The average speed of software testing is around 45M/S.
This is the ATTO Disk Benchmark test result.
The writing file uses a 2.2g video file.
The writing speed starts at about 80M/S, but when it is half copied, it is only about 30M/S.
This performance is not stable.
Reading is a copy from the U disk, the speed is amazing
The start speed flashed about 1.7GB/s and the stability was about 90M/S.
1, micro-usb end interface speed test
Test platform: lenovo yoga book
Test system: windows10+4gb ram
Test Software: HDTune pro
The speed is generally stable and is maintained at approximately 38.3MB/s.
The micro-usb is a portable version of the USB 2.0 standard, so the theoretical speed is the theoretical speed of usb2.0, USB2.0 maximum transfer rate is 480Mbps or 60MB/s.
Therefore, this speed performance is relatively normal, it is considered high speed, after all, my test environment is not so high.
The actual writing speed is not stable. The highest 45M/S, the lowest <10M/S, the speed is not very stable. This performance is not satisfactory.
Reading speeds frequently fluctuate from 10M/S to 45M/S and are not very stable.
And, this port has serious heat during the test.
In summary, this U disk tool is not very stable in terms of speed performance:
The usb3.0 interface is very fast in the early stage, and the speed is very slow in the later period. The difference between the maximum speed and the minimum speed is obvious.
The micro-usb interface speed is normal on the test software, but the actual write and read performance is not very stable.
to sum upThe opening article said that this U disk is to buy yoga book sun single gift, so the goal is convenient and there is no way to have higher requirements.
The overall performance, law-abiding, petite, easy to carry.
The clear design purpose is to facilitate the data transmission between the USB interface and the micro-USB interface.
64gb Jingdong price 160, not cheap, if you consider the price, not very good.
However, I did not test other storage devices with the same functionality, so I do not know the performance of similar products. For this product, if it is just the need for two interfaces, you can enter, otherwise, it is recommended to seriously consider.
The above is the sharing. Thank you.
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