2020-06-03 Thanks to user kuangzilin33 for raising the error that pin 11 is not connected to the power supply. The new project has been modified.
3D printing actual picture
》》》》》Plug in the four U disks and transfer files at full power》》》》》》
The speed of 2.0 is still a bit unsatisfactory, maybe it has something to do with the wiring. Next time I will tell you about version 3.0.
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