Mobile hard disk box mainly adopts three schemes: Lanshuo, Ruifak and ASM. Talking about master control is of course expensive, but all hard disk boxes involve circuit layout, power supply design, installation methods and other issues, which leads to the embarrassment that it is impossible to decide which box is the best according to master control, because the box pricing is related to the brand's business strategy. If you want to strictly compare the main control differences, it is estimated that it is a paper, and it is estimated that you don't want to read it at the end. Simply put, ASM is the fastest, Lanshuo supports the Trim instruction, ASM does not support the Trim instruction, and Ruifa Branch is the slowest. But generally speaking, it is better to design a dedicated external power port for mobile hard disk than no one, a large motherboard is better than a small motherboard, a metal motherboard is better than a plastic one, and a built-in buffer pad is better than no one. Finally, I have to say, it's really good to stay away from ORICO.