Finally added mSATA SSD to my T420 and now have 3 drives booting multiple operating systems, what a joy 😁 : r/thinkpad
NEW 512gb Msata Internal SSD SATA III For Lenovo ThinkPad T420 T430 T440 Laptop | eBay
Notebooks - What's this slot on T420 | bit-tech.net Forums
New Lenovo ThinkPad Notebooks Announced, mSATA SSDs For Everyone! - StorageReview.com
It's well past time to introduce you guys to my ThinkPad T420. i7-2630QM, 8GB RAM, she's a beast. Plan to put a 128GB mSATA and 7200RPM 1TB HDD in her before school
MSata SSD in Lenovo T420 with 12gb Ram and two more hard drives - YouTube
Amazon.com: CMS 128GB mSATA 6GB/s Internal SSD Compatible with Lenovo ThinkPad T420 Series - C29 : Electronics