Hi Jptiger,
Welcome to Sony Community!
The hard disc drive installed in your laptop is an M.2 Serial ATA or Serial ATA Hybrid type of storage. Both the 2.5 inch model, and the M.2 model are compatible with your laptop.
If you're not familiar with the process, you should get some help from experienced people, Sony service center or a trustworthy computer repair service in your area to precvent any unforseen issues.
Regards,
Jen
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