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NOTE: There are multiple board variants that arbitrate different voltage values. Check the silkscreen at the back of the board to view which voltage has been configured (circled with a marker).
All The 20V and 12V boards are configured with a minimum of 3A and maximum of 5A current. This means that your source (wall power adapter) needs to be able to deliver the voltage circled on the silkscreen and a minimum of 3A current. This information is likely visible in fine print on the adapter.
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LEDs
To summarize the LED notes in the schematic:
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