I have made some modifications based on the original author's design.

[zhqsoft]

A universal USB port is added to the hardware, which can connect to a printer or any other USB devices and be mounted to the computer where the current cursor is located via a shortcut key. In addition, a built-in high-capacity USB flash drive is added, which can also be mounted to the computer through a shortcut key.
Now I can make the most of this device for work without any limitations. Thank you to the author for providing such an excellent project.