If you don't need a secondary HDD, simply replace your old 2.5-inch HDD with a 2.5-inch SATA SSD (e.g., Crucial BX500, Samsung 870 EVO). This requires no driver hunting, no BIOS confusion, and is guaranteed to work.
Compatible? Yes, with strict conditions. Worth it? Only if you need a second internal drive. Otherwise, stick with the 2.5-inch SATA bay. Have you successfully installed an M.2 drive in your HP ProBook 450 G2? Share your model and experience in the comments below. hp probook 450 g2 m2 ssd compatibility
Introduction: Breathing New Life into an Old Workhorse If you don't need a secondary HDD, simply replace your old 2