I have rebuilt my MySQL server system using a Pi version 2 and a new external hard drive. I did this one in a Linksys router case. These cases are really easy to work with and not hard to come by.
I skipped the USB hub on this build. There isn’t enough room and I found an easier way. Power is spliced directly into a usb cable from a connector on the rear of the case. I found that this would not backfeed the Pi like I expected. (This does work on some of my older Pi systems.) To overcome this, I added a wire feeding 5V into GPIO pin #2.
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