Question about arduino 101 output ma.

Hardware Arduino 101
1

I am very confused about what the arduino 101's output voltage and mA are.

i see that it says "DC Current per I/O Pin 20 mA", and then it says "All pins operate at 3.3 volts. Each pin can source or sink a maximum of 4 mA."

Could anyone enlighten me on what the ouput voltage of the arduino is and the mA per ?output/input(whether pin or not)

2

Hi,
the 4mA information was based on early boards design, I'm changing it right now

Thanks

3

So is it safe to say that an Arduino pin outputs 3.3v and 20mA per pin?
or can the arduino regulate the output voltage?