Yes. The ProBook 450 G2’s chipset supports Intel SRT, which allows you to use a small SSD (typically 64–128 GB) as a cache for a larger HDD. You would need to configure the system in RAID mode in the BIOS and use Intel’s Rapid Storage Technology driver in Windows.
Ultimate Upgrade Guide: HP ProBook 450 G2 M.2 SSD Compatibility hp probook 450 g2 m2 ssd compatibility
The compatibility is mainly tied to your processor. If your ProBook 450 G2 has a 4th or 5th generation Intel Core i3/i5/i7 processor , the M.2 slot is fully functional. However, if it has an Intel Celeron or Pentium processor, the slot is not supported. Ultimate Upgrade Guide: HP ProBook 450 G2 M
If your ProBook 450 G2 originally had a WWAN (4G) module installed, that slot can be used for an M.2 SSD. However, a known issue exists: some laptops that shipped with a WWAN card will not recognise an M.2 SSD even after the card is removed. One user reported: “Service Manual says there is a M.2 slot – for WWAN or M.2 SSD. But the SSD did not show up in BIOS / DIAG … for testing purpose, i installed the same M.2 SSD to another 450 G2 without factory wwan. Voila, it works there” . If this happens, resetting the BIOS to factory defaults or updating to the latest BIOS version might help. In some cases, the slot is permanently locked to WWAN use, and no workaround exists. If your ProBook 450 G2 originally had a
Power on the laptop and immediately tap the to enter the BIOS. Verify that the system detects the new drive under System Configuration / Storage. 6. Software Setup: OS Migration
HP originally certified this model for up to 120GB M.2 SSDs. However, users have successfully used larger capacities, such as 240GB or 256GB
Before buying any hardware, review these exact technical parameters to ensure a perfect match. Supported Specification Incompatible Specification M.2 SATA III (6 Gbps) M.2 NVMe / PCIe Physical Size 2242 (22mm x 42mm) 2260, 2280 Connector Keying M-Key only Maximum Tested Capacity 512GB - 1TB (OS dependent) Drives exceeding 2TB may face BIOS limits Storage Role Boot Drive or Secondary Storage 3. How to Avoid the "NVMe Trap"