I have never used an SSD as a replacement for internal storage on an xbox, but you plug the drive into the console and you need the OSU1 update http://www.xbox.com/xboxone/osu1 on a USB (format USB to NTSF). When you turn the console on it will boot to safe mode and show a system error ranging from E101-106, go to troubleshoot and then offline update and it should work. [br]
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Also you do not need to pre-format HDDs anymore for xbox, you can plug it straight in and the console formats the partitions itself.[br]
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If it doesn’t work then I suggest trying a (min storage 500GB, max 2TB) 2.5” HDD, seagate barracuda greens are a good HDD to use.