HP ProBook 440 G9 Upgrade Guide: RAM, SSD and CPU

Updated Oct. 18, 2026 · Written from this device's verified specifications

The HP ProBook 440 G9 (HP ProBook 440 14-inch G9) is a 14-inch business notebook that is friendly to two of the three upgrades most owners want. Memory and storage are socketed and reachable, while the processor is permanently fixed at whatever your machine shipped with. Here is what fits, what the limits are, and what to watch out for before you order parts.

At a glance

  • RAM: 2 SO-DIMM slots, DDR4-3200, up to 16 GB per slot (32 GB total per HP).
  • Storage: M.2 NVMe only - a 2280 Gen 4 x4 primary slot plus, on non-WWAN units, a short 2230/2242 slot that shares the WWAN position.
  • CPU: soldered 12th-Gen Intel. No upgrade path exists, and the optional NVIDIA graphics is soldered too.
2x DDR4-3200 SO-DIMM, up to 32 GB total2 × DDR4 SO-DIMM · up to 32 GB total · 3200 MT/s
M.2 NVMe: 2280 primary + short WWAN/SSD slot2 × SSD M.2 2230 / M.2 2242 / M.2 2280 (NVMe) · up to 1 TB
2 × SO-DIMM · DDR4up to 32 GB totalM.2 NVMe: 2280 primary + short WWAN/SSD slot2 × SSD M.2 2230 / M.2 2242 / M.2 2280 (NVMe) · up to 1 TB
Schematic of the upgradeable slots (not to scale). Check the owner's manual for their exact positions.

Lifecycle and support

Standard support has ended; paid extended support runs until June 30, 2029 (estimate).

202220232024202520262027202820292030Today11 · Release · May 3, 202222 · EOSL · 202333 · EOL · June 30, 202944 · Extended support ends · June 30, 2029
Filled dots: dates published by the manufacturer. Hollow dots: estimates from third-party sources.
MilestoneDate
Release
First available to buy.		 May 3, 2022 Estimate First SKU market introduction (5Y3Z1EA/5Y3Z2EA) per third-party price database; later SKUs 2022-06-21, 2022-07-28 and 2024-01-15. HP's own Maintenance and Service Guide, 1st ed., is dated 2022-03 (N03555-001), which only dates the document, not availability: https://www.ifixit.com/Document/UHPNo1bIA
Source ↗
End of standard support (EOSL)
Standard warranty and support contracts can no longer be renewed.		 2023 Estimate HP spec sheet states 1-year parts & labour (1/1/0), return-to-depot, no on-site (some configs 2-year), so standard warranty/support for early units ended ~2023; the end date is derived, not published.
Source ↗
End of life (EOL)
The manufacturer stops developing the product: no new BIOS, firmware or driver releases.		 June 30, 2029 Estimate HP's 'End of Service Life' (EOSL) for SKU 6K3L6PA, the date after which HP stops firmware/security updates and spare parts; third-party HP-authorised partner data, not an HP-hosted lifecycle page.
Source ↗
End of extended support
Paid extended support ends; after this there is no manufacturer support at all.		 June 30, 2029 Estimate Same EOSL date (SKU 6K3L6PA): post-warranty Care Packs (listed on the HP spec sheet) can only be bought up to this date, after which there is no manufacturer support at all.
Source ↗

Dates not listed haven't been published by the manufacturer or a reliable third party.

Memory (RAM)

The ProBook 440 G9 has two 260-pin DDR4 SO-DIMM slots, both socketed - nothing is soldered to the board. The memory is DDR4-3200 (PC4-25600), non-ECC and unbuffered, and the two slots run in dual-channel mode.

HP validates 16 GB per slot, giving 32 GB in total (2 x 16 GB). Factory configurations run from 4 GB up to 32 GB, so plenty of machines ship with a single stick and one slot free - a cheap way to add memory is to buy one matched module rather than replacing both.

If you install modules with different speeds, the system runs everything at the slower module's speed, so buy a matched pair of the same capacity and speed (2 x 8 GB or 2 x 16 GB) to get the best result.

What about 64 GB? Some sellers offer 2 x 32 GB kits for this model, citing the processor's theoretical capability, but HP has not validated more than 16 GB per slot. It may work, but treat it as unverified and check the seller's return policy first.

A note on warranty wording: HP says the memory slots are upgradeable by IT or self-maintainers only, which implies servicing is restricted to those channels. The bottom cover is user-removable in practice, but read the warranty wording before you open the machine. HP also recommends HP-branded memory for compatibility; generic JEDEC DDR4-3200 CL22 SO-DIMMs work fine in practice for most owners.

Buying tips

  • Buy DDR4-3200 SO-DIMMs (260-pin), non-ECC and unbuffered. Nothing else fits.
  • Go for a matched pair - 2 x 8 GB or 2 x 16 GB - for dual-channel performance.
  • 32 GB is the safe, validated ceiling. Only try 2 x 32 GB if the seller accepts returns.

Storage (SSD)

This notebook takes M.2 NVMe SSDs only. There is no 2.5-inch bay, no SATA interface and no optical drive, so an old SATA SSD cannot go inside - use a USB enclosure if you want to reuse one.

The primary slot is an M.2 2280 M-key drive connected over PCIe NVMe Gen 4 x4. Gen 3 drives work fine, just at lower speeds. Gen 4 drives reach full speed here but can run warm in this slim chassis, so keep an eye on temperatures and airflow. HP validates up to 1 TB; third parties sell drives up to 4 TB for this model, which is unvalidated - again, check the return policy before paying for a very large drive.

There is a second, short M.2 slot (2230 or 2242), but it shares its position with the WWAN module. Per HP it is available only in systems without WWAN and with a primary M.2 drive, where it takes a 128 GB or 256 GB 'Value' SSD. If your unit has LTE/WWAN, the position is already occupied and you have no second SSD slot. It is not a second full-length 2280 bay.

Two more things to keep in mind. HP's recovery software reserves up to 35 GB of the system drive, so formatted capacity always looks smaller than advertised. And not every SKU has a memory card reader - options vary by region and part number, so check your exact model before assuming a feature is present. HP's storage list and third-party sellers also disagree about maximum SSD capacity (1 TB validated versus larger drives sold), which is worth knowing before you buy.

Buying tips

  • For the main drive, buy an M.2 2280 NVMe SSD. Gen 4 gets full speed; Gen 3 works but is slower.
  • Before buying a second short SSD, confirm whether your machine has WWAN - the two are mutually exclusive.
  • Stick to 1 TB if you want HP-validated parts; larger drives are unverified.
  • Confirm your exact part number at partsurfer.hp.com before ordering, since ports and readers vary by SKU.

How to upgrade

Before you start

  • Back up your data before touching anything, especially if you plan to clone or replace the system drive.
  • Shut the machine down fully and unplug the charger.
  • Ground yourself to avoid static damage to the memory and SSD.
  • Open the case and install the part, then close it up.
  • Start the machine and check in the BIOS or firmware that the new memory or drive is detected.
  • For exact disassembly steps, screw locations and any model-specific latches or clips, follow the owner's manual for your machine.

Steps

  1. Back up your data
    Copy anything important before you open the case. If you are swapping the system drive, decide in advance whether you will clone the old SSD or install a fresh copy of Windows.
  2. Power off and unplug
    Shut the notebook down completely and disconnect the charger and any attached devices.
  3. Ground yourself
    Work on a clean, uncluttered surface and discharge any static - memory modules and SSDs are sensitive to it.
  4. Open the case
    Remove the bottom cover to reach the SO-DIMM and M.2 slots. Use the owner's manual for your specific unit, as screw and clip details are not published generically.
  5. Install the part
    For RAM, seat the SO-DIMM firmly at an angle and press it down until it clicks, then verify both latches hold it. For an SSD, slide the M.2 drive into the connector and secure it at the mounting point. In the short second slot, use a 2230 or 2242 drive only - a 2280 drive will not fit.
  6. Close the case
    Replace the cover and screws, and reconnect the charger.
  7. Check the BIOS and system
    Boot into the BIOS or firmware and confirm the new memory capacity or drive is recognised, then check the drive in your operating system as well. If the second SSD slot is not detected, verify that your unit has no WWAN module - the two share the same position.

Good to know

  • Capacities and options above HP's validated figures (64 GB RAM, SSDs over 1 TB) are unverified and depend on the seller's return policy.
  • Warranty wording restricts servicing to IT or self-maintainers; check your coverage before opening the case.

Frequently asked questions

How much RAM can the HP ProBook 440 G9 take?

HP validates 32 GB in total: two 16 GB DDR4-3200 SO-DIMMs. Some sellers offer 64 GB kits (2 x 32 GB), but those are unverified by HP and may or may not work.

What RAM does the HP ProBook 440 G9 use?

260-pin DDR4-3200 (PC4-25600) non-ECC unbuffered SO-DIMMs. Both slots are socketed, and mixed speeds run at the slower module's speed, so matched pairs are best.

Can you upgrade the CPU in the HP ProBook 440 G9?

No. The 12th-Gen Intel processor is soldered to the mainboard, so there is no upgrade path. The optional NVIDIA GeForce MX570 graphics is soldered as well.

Does the HP ProBook 440 G9 have a second SSD slot or a 2.5-inch bay?

There is no 2.5-inch bay and no SATA support. There is a short M.2 2230/2242 slot, but it shares the WWAN position and exists only in units without WWAN, where HP offers a 128 GB or 256 GB secondary SSD.

What size SSD fits the HP ProBook 440 G9?

The primary slot is M.2 2280, PCIe NVMe Gen 4 x4. Gen 3 drives work but are slower. HP validates up to 1 TB, while third parties sell up to 4 TB unvalidated.

Do I lose WWAN/LTE if I add a second SSD?

Yes. The secondary M.2 slot and the WWAN module use the same position, so a unit with LTE cannot also hold the short secondary SSD, and vice versa.

Official documents and references

This guide was written with AI assistance from the compatibility data PartsPrices verified against the manufacturer's documents. Always check your exact model and the owner's manual before buying or opening your computer.