Power on the machine and press repeatedly to enter the BIOS. Check the System Configuration or Storage menu to confirm that the laptop detects your new drive. You can now use disk cloning software to move your OS to the SSD, or perform a clean installation of Windows for optimal performance.

If you want to use the internal M.2 slot, look for these models:

The short answer is

Because the M.2 SATA 2242 form factor is less common than the standard 2280 size, finding options from mainstream brands requires targeted searching. The following drives match the exact specifications required by the HP ProBook 450 G2:

Loosen the captive screws securing the large plastic service door on the bottom base cover.