6
Usage Guide
Before attaching Ace4U USB hub to Raspberry Pi A+ or 3A+, please make sure the
USB testing pads on Raspberry Pi are not covered by flux. In case they are, use a
cotton bud to clean their surface with some ethyl alcohol. Or you can gently scratch
their surface with tweezers. The purpose is to expose the metal surface of testing
pads, so they could be contacted by pogo pins.
Now fix the male-female standoffs on Ace4U board with the plastic screws, as shown
in picture below:
Use tweezers to place the 4 pogo pins into the holders on Ace4U board:
