dude, you a correct. wattage is too low.
What do you guys think of this one?
https://www.amazon.com/Sipolar-Desktop-Charging-Station-Charger/dp/B01K4MZQJ8/ref=sr_1_1?s=electronics&ie=UTF8&qid=1513537668&sr=1-1&keywords=sipolar+A-40012V*10A, that is 120w right? should easily run ~10 moonlander 2? It says it can do up to 2.1A per port. Seems like a good price for a hub that can handle 10. Am I missing something(again)?
Fyi guys, this hub will definitely for four moonlanders. It should be able to power four as well, just need to get my hands on a few more to test out the power.
Are you making an apples to oranges comparison maybe, focused on the amperage but not the voltage? That says the PS is 5V 4A, which is only 20W. Can't see that being anywhere near enough for 4 unless they are running at a very low frequency.