One of the most frustrating aspects of the ProBook 450 G2 architecture is how the SATA controllers are wired.
While HP's original documentation from the mid-2010s often mentioned maximum tested capacities of 120GB or 256GB for the M.2 slot, this was simply due to market availability at the time. hp probook 450 g2 m2 ssd compatibility
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. One of the most frustrating aspects of the
M.2 NVMe / PCIe SSDs. Modern, high-speed NVMe drives will fit physically into the slot, but the motherboard lacks the PCIe lanes routed to that specific slot to communicate with them. The drive will not be detected. The Form Factor: 2242 Size The Form Factor: 2242 Size For an older
For an older laptop, this upgrade offers immense value for a relatively small cost. While you won't achieve the blistering speeds of modern NVMe drives, you will experience a night-and-day difference in everyday use. The ProBook 450 G2 is also limited to SATA II (3Gbps) speeds on its main 2.5-inch drive bay, which means the M.2 slot, which has a native SATA III (6Gbps) interface, is actually faster.
For the best results, look for reliable SATA-based M.2 2242 modules from reputable brands. HP Probook 450 g2 m2 - Tom's Hardware Forum
To ensure a successful upgrade, your chosen M.2 drive must meet these specific criteria: