4-channel KVM designed based on CH9374B

Based on the KVM designed by CH9374B, CH9374B is a 4-port USB KVM control chip. One set of keyboard and mouse supports the sharing of 4 sets of hosts. It is plug-and-play and does not require driver installation.
Because I often switch back and forth between the Raspberry Pi and the PC, I prepared two sets of keyboard and mouse tables but couldn’t fit them in, so I designed this kvm to solve my problem.
When the USB is plugged into the PC and the PC is powered on, the power light corresponding to the USB port will light up.
By pressing the buttons of different channels, the keyboard and mouse will switch to the corresponding PC channel with almost zero delay, and the link light of the corresponding channel will light up at the same time.
The USB port of each PC adopts an anti-backflow design, allowing partners to operate with ease even in front of South China motherboards.
 
There are more detailed instructions on the wx public account "FUNIO". If you are interested, you can pay attention.