The ProBook 450 G2 comes standard with a 9.5mm height, 2.5-inch SATA III hard drive bay (6 Gbps). Installing a standard SATA SSD here delivers:
The is compatible with M.2 SATA SSDs in the 2242 form factor (42mm length) . This specific slot is located near the Wi-Fi card and does not support faster M.2 NVMe/PCIe drives. Compatibility and Specifications
, as the BIOS generally recognizes larger SATA-based M.2 drives. HP Support Community Why M.2 SATA vs. NVMe Matters
If you are determined to use that empty M.2 slot (perhaps because you need both a large HDD for storage and SSD speed), you can install a small working M.2 SSD (e.g., 64GB SanDisk Z400s) and use Intel Rapid Storage Technology (IRST) or Windows Storage Spaces to create a for the mechanical hard drive.
This is the most common mistake upgraders make. The M.2 slot in the 450 G2 is electrically wired for , not PCIe/NVMe.
The ProBook 450 G2 is a "dual-storage" capable machine, meaning you can run two drives simultaneously:
