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I can boot with this usb-c port fine w/out a battery. this port can see USB-c drive fine but doesn't charge and macOS can see the charger but it says "not charging"
I think it's either u3200 or u7000.
usb-c meter say 19,72v at 0.275a which is the same as the other port.
fixed... never mind. it's then usb-c cable. still not sure why it's working on another port but not on this port. after changing usb-c cable and this port work. so strange...