Tibor Kiss replied to the topic 'Power Shield for Astroberry' in the forum. 2 years ago

Deesk06 wrote: I like the original design OP has. Powerpole connectors are great but seems like it would take up more real estate on the hub itself. Those connections are somewhat wide. The 2.1mm connection seems better IMO with the reverse polarity protection

If I understood the others, they were recommending the PowerPole instead of the XT60 input power connector. I agree with you the normal DC jack (2.1mm or 2.5mm) is better (more common) to use for the outputs.
As far as I understood the PowerPole has also a kind of polarity.