Wondering if there's an adapter to allow me to upgrade my 2012 MBP SATA HD with a 2016 M.2 SSD? I'm planning to upgrade to a new rMBP later this year, after I know what Apple has planned for the MBP. However I need more storage and a speed bump on my old MBP. But I don't want to invest in an expensive 1TB SSD unless I can transfer it to my new MBP. Has anyone had any experience with this?