USB 3.0 ports not working after upgrading power supply

I got that USB 3.0 flash drive that you recommended, but the only ones available were also USB 2.0 backwards compatible, so I'm not really sure how to test whether or not I'm getting the 3.0 or 2.0 connectivity. The flash drive produced way more consistent results overall than my phone though (which is kind of annoying, but I guess a separate less important issue). On all of my tests with the flash drive, I was able to get at least USB 2.0 connectivity on the first plug-in, but I'm not really sure how to test the 3.0 issue. Any advice would be much appreciated!

I would first plug to a USB 2.0 port and copy a large file to it, and check the speed (expand details on copy dialog).
Then plug in to USB 3.0 and copy again. It is supposed to be noticeably faster. What does the packaging tell you the speed would be? (Not all brands tell though).

Alrighty! I'll begin the testing. It says on the front that their USB 3.0 speeds are "10x FASTER than USB 2.0**". When I looked at the back, it says they're basing that off of a 3.5MB/s 2.0 write speed. 35MB/s sounds a little insane to me though, like my hard drives might be the bottleneck at that point, but I'm not sure. Anyway, we'll see what the testing shows.

HDD are 90-100MB/s. It won't bottleneck. But I wonder if we will see a difference with that speed, it is on the down side of USB 3.0 speeds.

But shouldn't discourage even before starting :)

Hmm, so, I tested one USB 3.0 port from each of my two sets of two front panel USB 3.0 ports and compared it to the speeds I got from a USB 2.0 port on the back panel.

On the back panel (i.e. 2.0), it began at around 30 MB/s but quickly settled and stayed at around 14 MB/s. On the front panel USB 3.0 ports, it would start at around 40-50MB/s but then it quickly dropped and settled around 20-22MB/s. That doesn't seem like a hugely significant jump to me, but maybe you'll think differently. Just in case it's relevant, for all of the testing I used a 3.75GB .mkv file. I could try this testing for all six USB 2.0 ports and all eight USB 3.0 ports, but then I'd need to start getting a spreadsheet or something going to keep track of 'em.

EDIT: Whoops, sorry; I didn't see that you'd replied before I had the chance to update with results. Yeah, it definitely does seem to be on the low side of USB 3.0 then. :/

If you got the time, try every port (I am curious), a simple notepad will be enough. Something like:
3.0-1 ###MB/s
3.0-2 ###MB/s
..
..
2.0-1 ###MB/s
..

14MB/s vs 20-22MB/s - is an improvement. Look at the speed differences of USB 3.0 flash disks here as a reference - 31 USB 3.0 Thumb Drives, Tested And Reviewed - 31 USB 3.0 Thumb Drives, Rounded-Up.

Alrighty, I've attached the "results" of my testing as a notepad file, as recommended. I hope the formatting isn't too peculiar--I tried to make it easy to follow. Pretty much all of the USB 2.0 ports started off somewhere around 20+ MB/s and then slowly drifted down to that 14 MB/s by halfway through the copy/pasting process. Eventually they'd start fluctuating between about 13.8 and 13.5 MB/s. The USB 3.0 ports are even less responsive than they were the last time I tried to test them. All those "no response" readings are based off at least 4 (probably more like 6) goes at removing and re-plugging in the flash drive. At least this confirms the problem isn't just with my phone...

Hmm, the 2 times recognized was with USB 2.0 speeds. The ports are working though. I guess they wouldn't work if USB 3.0 chip was damaged. Can you see the drive in Disk Management when plugged in to one of the unresponsive USB 3.0 ports?

Re-install the USB 3.0 driver from motherboard support site
Then if no go, try running this MS FixIt https://support.microsoft.com/en-us/...problems/en-us

Alrighty, I reinstalled the USB 3.0 drivers again, but they didn't seem to change anything. I'm not sure what you mean by "Disk Management"? Like, the Windows Explorer window where I see my hard drives and removable devices? No luck there. If you mean the device manager window, I don't see anything there either. I've attached the results of the FixIt program, but it didn't seem to actually fix anything. The flash drive is still not being detected in a consistent way; I got one detection at apparently 2.0 speeds after several attempts (and the drive was plugged in for about 30 seconds before it was detected).