Bottom Line Up Front: The HP ProBook 450 G2 does support an M.2 SSD, but with very specific limitations. Do not buy a standard NVMe drive – it will not work. You need a SATA-based M.2 2242 or 2260 SSD.
Based on compatibility reports and thermal output (the ProBook has no M.2 heatsink), here are the best drives as of 2024:
| Drive Model | Interface | Key | Max Capacity | Why it works | | :--- | :--- | :--- | :--- | :--- | | Crucial MX500 M.2 | SATA III | B+M | 1TB | The gold standard. DRAM cache, low heat, proven compatibility. | | WD Blue 3D NAND (M.2) | SATA III | B+M | 1TB | Excellent performance, power-efficient. | | Samsung 870 EVO (M.2) | SATA III | B+M | 1TB | Requires adapter? (Note: Samsung's M.2 SATA is rare. Most 870 EVO are 2.5". Ensure model # MZ-N6E1T0BW). | | Kingston A400 (M.2) | SATA III | B+M | 480GB | Budget pick. No DRAM but works fine for basic boot drives. | | TEAMGROUP EX2 (M.2) | SATA III | B+M | 1TB | Affordable and actively confirmed in HP ProBook 450 G2 forums. | hp probook 450 g2 m2 ssd compatibility
⚠️ Avoid at all costs: Any drive labeled "NVMe," "PCIe Gen 3/4," "Samsung 980/990 Pro," "WD Black SN series," "SK Hynix Platinum."
Assuming you have found a compatible SATA-based M.2 drive, you must ensure it fits the physical constraints of the laptop’s motherboard. Bottom Line Up Front: The HP ProBook 450
| Feature | M.2 2242 SSD (WWAN slot) | 2.5-inch SATA SSD | |---------|--------------------------|--------------------| | Compatibility | Poor (rare drives only) | Excellent (all brands) | | Max Capacity | 128GB (practically) | 2TB+ | | Max Speed | ~350 MB/s | ~550 MB/s | | Boot Support | Unreliable | Native guaranteed | | Price per GB | $0.80–$1.50 | $0.05–$0.10 | | Recommendation | ❌ Avoid | ✅ Strongly recommended |
You can find a working M.2 SSD, but it will be: You can find a working M
For most users, this route is not worth the effort.
Some older laptops (e.g., certain Lenovo ThinkPads) support tiny M.2 2242 SATA SSDs in their WWAN slot. This does NOT work on the HP ProBook 450 G2. HP did not enable storage functionality on that port.
Most modern laptops use the M.2 2280 standard (80mm long). The ProBook 450 G2, however, was designed for the shorter 2242 standard (42mm long).
If you buy a standard Samsung 970 EVO or WD Blue (which are 2280), it physically will not fit because the motherboard lacks the standoff screw hole for the longer length. You must hunt specifically for "M.2 2242" drives.