At present, the type-C interface has gradually become the standard configuration of the era, whether it is laptop, mobile phone, or tablet. The use of this front and back pluggable C port not only brings higher data throughput speed, but also reduces the design thickness of various digital devices. In order to improve the speed of data exchange and facilitate data conversion between devices, an OTG USB flash drive with a dual interface design has emerged. It can directly exchange data from mobile phones and tablets with the computer without the need for a data cable or a pairing program installed on the computer.

Sandi Kujing high-speed OTG USB 3.1 (type-c) USB flash drive can realize data exchange between USB type-c smart phones, tablets, Macs and USB type-a computers. USB 3.1 Gen 1 has high performance, which can be said to keep pace with the times. In terms of packaging, common disposable card lamination is used to avoid the possibility of buying returns and exchanges.

The overall shell adopts a metal design, which can better achieve heat dissipation effect. At the same time, it also enhances the overall robustness. The edge R-angle design is relaxed and has a smooth curve.

Lightweight design, with an opening on the Keychain at the tail for easy carrying. The fashionable metal shell and rotating design can provide good protection when stored. The capacity, serial number, and other identification of the USB flash drive are printed on the inside of the back.

As a USB flash drive with OTG function, in addition to the blue USB 3.1 port, the other end is a type-c interface that can be plugged in both front and back.

During use, I found that my phone needs to be correctly recognized by inserting the side with the Sandi brand outward, which allows users to easily expand their smartphone or tablet. By using the file manager, I can copy photos and documents from the phone without the need for too complex operations. There is no need for networks, data cables, or other peripherals such as computers. I often transfer all kinds of materials sent by teachers in the children's Cram school group directly to the USB flash drive. I can also take the USB flash drive to the print shop to print them on the way to work.

On the mobile end, we can directly test the speed through the Androbench software. There will be different test speed results for different phone styles. From my phone, I can see that it reads approximately 115MB per second sequentially and writes at a level of 32MB per second sequentially.

After copying data from your phone, don't rush to unplug it. Currently, many mobile style file copying and pasting dialog boxes appear exceptionally fast, but files still have a few seconds of delay in the background transmission. So usually we can wait for more than ten seconds to safely unplug after completing data replication to ensure data security. After inserting the PC terminal, perform a speed test. Here, it can be seen that the actual capacity of a 64GB USB drive is about 57.2GB. On the USB 3.1 high-speed port on the PC side, it can achieve a speed level of 149MB read per second and 32MB write per second, which is slightly faster than on the mobile phone. As a USB flash drive style that adopts a small volume design and an all metal shell, you can feel the obvious heat generated by the shell during use, and the degree of heat generation is within an acceptable range.

Overall, with this Sandi OTG USB drive in daily life, it is convenient to move unused photos and useful large files from your phone to the USB drive at any time, saving space on your phone. It can also be very convenient to transfer files from the computer or USB flash drive directly to customers via mobile phone in an outdoor environment without a network, improving work efficiency. If you need it, you can give it a try like me.