USB 3.1 port wiring for charging

Thread Starter


Joined Jan 29, 2023
Hi everyone, I'm building an USB charger with a linear PSU just for hobby and I want to install an USB 3.1 port so it can supply 900 mA max.

If I only connect up the USB 3.1 port VBUS and GND pins, will the device recognize it as USB 2.0?

I'd like to know what I should do with the other five wires, as if I were charging from a computer USB 3.1 port but without the data transfer.

I already know that a SMPS will do the job cooler, lighter, but still want to build this as linear, thanks in advance!