One thing to remember is that ALL USB connections are powered. Bus power delivers the same 5v as an external hub. I have looked into this topic for years and nobody has ever been able to sell me a reason why some random device cares whether it is powered by bus power or external power. My best guess is that the issue is not the power side but the data stream side. It may be that external hubs (and I will call them that because as I said, ALL USB ports are powered from somewhere) with several devices connected were trying to pass too much data through a USB 2.0 port. USB 2.9 passed data at 480 mbps. 3.0 will pass data 10 times faster at almost 5gbps. (I actually had someone try to tell me one time that you shouldn't plug a 2.0 device into a 3.0 port. Amazing. That's like saying that if your water supply is only 480 psi that pushing that water through a hose that supports 4800 psi means the water won't flow.) I would buy it if they said not to WASTE a 3.0 port with a 2.0 device and then not have a 3.0 port available when you need it. That made me question why PC manufacturers would put BOTH on a computer. If 3.0 is available, and since you put 2 of them on "this" model apparently it is, why not make them ALL 3.0 and remove the mystery?

Shall we get into the conversation as to whether even passive hubs (with no wall power supply) are in a real sense "powered" hubs because the plug into the computer and thus are bus powered?

I only bought this things because I wanted more ports but didn't want to strain my power supply. I am moving the same amount of data as I always did. And data isn't moving through it unless I make it move. There are 4 devices that are just charging. Like the GHOS for example. It does nothing with data until I start the Garmin Express software to check for updates. There are a lot of people who don't understand basic concepts yet postulate theories. Like with amperage. A power supply isn't "shoving" amperes out all the time. It delivers them when you request them, and then when the load stops, it goes back to wait status. I ran into this a lot with people who thought they understood solar power and calculating how much battery was needed. Yet they didn't get that adding a second battery in parallel maintains the 12v but adds amps. One guy literally argued with me that adding a second battery would mean I then had 24v. No concept of parallel vs series.