elitebook 840 g2 m.2 ssd size and compatible cards - HP Support Community - 5117937
SSD Upgrade for HP EliteBook 840 G2 256GB/512GB/1TB/2TB | eBay
Amazon.com: HP EliteBook 840 G2 14 Inch Business Laptop, Intel Core i5-5300U up to 2.9GHz, 16G DDR3L, 512G SSD, WiFi, DP, Win 10 Pro 64 Bit Multi-Language Support English/French/Spanish(Renewed) : Electronics
Can we put both an HDD and an SSD in an EliteBook 840 G3? - Quora
HP EliteBook 840 G2 how to disassembly to upgrade SSD, change RAM, battery - YouTube