80GB HP EliteBook 840 G1 2.5" SATA Laptop Hard Drive HDD Upgrade Replacement | eBay
Confused - Elitebook 840 G1 and the SSD m.2 slot 42mm - SAT... - HP Support Community - 5085271
2.5" 7mm SATA Hard Drive Caddy SSD HDD Bracket w/Screw G1 G2 NO-G3 Fit for HP EliteBook 840 850 740 750 745 755 | Shopee Malaysia
HP Elitebook 840 G1 Hard Drive Replacement - iFixit Repair Guide
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