[Reproduction and improvement] USB HUB switch 4 in 4 out

## Introduction
The appearance, size and structure are improved on the original author's open source solution. It is small in size and meets the daily USB2.0 use. The original project [click to jump](https://oshwhub.com/Aknice/e3a68120fa8d49ff8bc50ad21d57ec9d)
## Instructions for use
The typeC port is the output port. The self-locking switch is used to select the typeC as the output. The output selection truth table is as follows

| A | B | USB | LED |
| --- | --- | --- |--- |
| 0 | 0 | USB1 | LED1 |
| 0 | 1 | USB2 | LED2 |
| 1 | 0 | USB3 | LED3 |
| 1 | 1 | USB4 | LED4 |

The self-locking switch is pulled up to 1 , pull down to 0, the LED below the selected output TypeC port will light up, and you only need to look at the LED for actual use
When soldering the self-locking switch, it is best to use a multimeter to test whether the pressing and lifting correspond to the upper and lower pull-ups at the PCB pads. Don't just solder it directly
## Shell
There is no 3D printer recently, so the shell adopts the PCB plus copper column solution. Therefore, the PCB holes are symmetrical when designed to highlight the self-locking switch, which is convenient for pressing

* M3 screw hole
* Copper column 6mm double-pass type

## The actual object is as shown
![图片1.png] ![图片2.png] As shown in the above picture, the Type-C port above is the third one from left to right, and the blue LED below is also on, prompting that the current selected port is output to the PC. When there are multiple output requirements, the self-locking switch below can select the output port