Acer Chromebook C720 SSD Upgrade To MyDigitalSSD M.2 (NGFF) 128GB SSD - Worlds Easiest Upgrade | The SSD Review
22*42mm M.2 SSD 128GB full 118GB SATA III 6Gb/s Internal Hard Drive m2 SSD NGFF for Chromebook Acer C720 for HP Ellitbook 840 G1|Internal Solid State Drives| - AliExpress
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HP Chromebook 14 16GB Solid-State Drive (SSD) M.2 form factor LST-16S9G-HP - Notebookparts.com