blargg, you have designed an excellent PCB and I’m planning on doing the same thing except that I’ll use a small USB connector along with a cable, directly connected to the main board. Would you recommend putting these resistors and diodes on the main board? Also, I was reading recently that it is recommended to use 4.5V zener diode because a USB port operates at 4.5V. You have used 3.6V zeners, they’ll work because 3.6V is still a high signal but would you recommend 4.5V zener diodes or not?
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