Elitebook 840 G1 - M.2 SSD - HP Support Community - 5228442
HP Elitebook 840 G1 Hard Drive Replacement - iFixit Repair Guide
Confused - Elitebook 840 G1 and the SSD m.2 slot 42mm - SAT... - HP Support Community - 5085271
HP Elitebook 840 G1 Hard Drive Replacement - iFixit Repair Guide
HP Elitebook 840 G1 14.0 in i5 4200U 8GB 128GB SSD Windows 10 Pro Grade B | eBay
M.2 2242 SSD for 840 G1 - HP Support Community - 6835589
HP EliteBook 840 G1 i7-4600U 2.10GHz 8GB RAM 256GB SSD Win10 Pro T28 | eBay
elitebook 840 g2 m.2 ssd size and compatible cards - HP Support Community - 5117937
Amazon.com: HP Elitebook 840G1 Ultrabook Laptop Computer, Intel Core i5-4200U up to 2.6GHz, 8G DDR3 RAM, 240GB SSD, VGA, DisplayPort, USB 3.0, Windows 7 Professional 64-Bit (Renewed) : Electronics
What SSD i can use in Elitebook 840 G1??? - HP Support Community - 8038187
HP Elitebook 840 G1 Hard Drive Replacement - iFixit Repair Guide
Amazon.com: HP EliteBook 840 G1 Intel Core I7 4600U 2.1GHz 16G DDR3 Ram 180G SSD Webcam Windows 10 Pro (Renewed) : Electronics
HP EliteBook 840G1: Sometimes it's an Ultrabook, sometimes it's not • The Register