ASUS ROG Zephyrus G14 GA401 upgrade guide

Lifecycle and support

No longer sold new. The manufacturer hasn't published an end-of-support date.

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

RAM: one free SO-DIMM slot

The G14 has 8 GB or 16 GB of DDR4-3200 memory soldered to the motherboard plus a single user-accessible DDR4 SO-DIMM slot. The soldered portion is permanent — whatever your machine came with is what it keeps for life.

What fits: a standard 260-pin DDR4-3200 SO-DIMM, 1.2 V, unbuffered and non-ECC. ECC or registered/server memory will not work. The official specification tops out at 16 GB per module, giving a maximum total of 24 GB on machines with 8 GB onboard (8 + 16) or 32 GB on machines with 16 GB onboard (16 + 16).

Limits and gotchas: larger 32 GB modules (producing 40 GB or 48 GB totals) are widely reported by users to work, but ASUS does not validate them — treat those as unconfirmed. Speed is another soft limit: slower modules simply run at their own slower rate.

For performance, match the capacity of the soldered memory. With a mismatched module, the machine runs in mixed mode — part of memory is dual-channel, the excess runs single-channel — and that measurably affects integrated-graphics and CPU-bound gaming. So on a 16 GB-onboard model, a 16 GB module is the sweet spot; on an 8 GB-onboard model, an 8 GB module matches, though a 16 GB module gives you more headroom if you can live with a little single-channel memory.

Buying tips: check how much RAM is soldered to your exact SKU first — regional spec pages vary and it determines both your ceiling and the ideal module. Buy DDR4-3200 (PC4-25600) SO-DIMM from an authorised retailer; ASUS recommends this for maximum compatibility. On reassembly, re-paste the mylar/absorber sheet over the module as the service guide shows.

Buying tips

• Find out your model's soldered memory (8 GB or 16 GB) before ordering — it sets your maximum total
• DDR4-3200 SO-DIMM, 1.2 V, unbuffered non-ECC; match the soldered capacity for dual-channel
• Officially 16 GB per module; 32 GB modules are user-reported but unvalidated

Storage: one M.2 NVMe slot

There is a single M.2 2280 (22 x 80 mm) slot, wired for PCIe NVMe (PCIe 3.0 x4 on these models). Because it's the only slot, upgrading means cloning your existing drive or reinstalling onto the new one — there's nowhere to add a second disk.

What fits: any M.2 2280 NVMe SSD. What does not fit: M.2 SATA SSDs — these are explicitly unsupported and will not work at all. There is also no 2.5-inch bay and no room for one, so ignore any listing that suggests SATA HDD or SSD support. The microSD card reader is handy for camera offloads but is not a storage upgrade path.

Limits and gotchas: ASUS's spec sheets top out at 1 TB. Larger 2 TB and 4 TB 2280 NVMe drives generally work in practice, but they sit outside the rated specification. The drive is held by one small M2 x 4.5 screw, and the service guide notes the SSD mylar/absorber should be re-applied on reassembly.

Buying tips: go for a standard single-sided or double-sided 2280 NVMe drive from a mainstream brand, and plan your migration (clone or fresh install) before you open the case. Note that regional SKUs ship with 512 GB or 1 TB stock drives, so check what you already have.

Buying tips

• M.2 2280 NVMe only — M.2 SATA drives will not work
• 1 TB is the official maximum; 2 TB and 4 TB drives usually work but are outside spec
• There's no second bay, so budget for a clone or reinstall

How to upgrade

Before you start

• Back up your data first, especially before touching the SSD.
• Shut down fully, unplug the AC adapter and disconnect all peripherals and cables. The upgrade guide's warnings also require disconnecting the battery before removing the cover.
• Ground yourself to avoid static damage to the components.
• Map the screws before removal — the cover uses a mix of sizes (ten M2 x 9, three M2 x 4.5 and one M2.5 x 6), and putting the wrong screw in the wrong hole can cause damage.
• Open the case following your model's owner's manual for exact disassembly steps. Install the part, close the case, then check in the BIOS/firmware that the new memory or drive is detected.
• On reassembly, re-paste the mylar/absorber sheets over the RAM and SSD as shown in the service guide.

Steps

1. General upgrade outline
   1. Back up your data. 2. Power off completely, unplug the AC adapter and disconnect all peripherals and cables, including the battery. 3. Ground yourself. 4. Map the cover screws, then open the case using your model's manual as the reference. 5. Install the RAM module (press it down until it clicks) or the M.2 2280 NVMe drive (secure with its screw). 6. Re-paste the mylar/absorber sheets, close the case and replace the screws in their original positions. 7. Boot and confirm in the BIOS/firmware that the new part is recognised.

Good to know

• Spec pages differ by region and SKU — the same series can ship with 8 GB or 16 GB soldered and 512 GB or 1 TB SSDs, so check your own model's documentation.

Frequently asked questions

How much RAM can the ASUS ROG Zephyrus G14 GA401 take?

Officially 24 GB or 32 GB depending on your model. Machines with 8 GB soldered top out at 24 GB (8 + 16 GB SO-DIMM), and machines with 16 GB soldered at 32 GB (16 + 16 GB SO-DIMM). Users report 32 GB modules working for 40/48 GB totals, but ASUS doesn't validate this.

Can I upgrade the CPU in the ROG Zephyrus G14?

No. The processor is soldered (BGA, AMD FP6) on every GA401 variant, so it can't be removed or replaced. This applies to both the 2020 (4800HS/4900HS) and 2021 (5800HS/5900HS) models.

Does the GA401 support M.2 SATA SSDs?

No. ASUS states plainly that the M.2 2280 slot does not support M.2 SATA SSDs. You need an NVMe (PCIe) drive.

How many SSDs can I install in the G14?

Just one. There is a single M.2 2280 PCIe NVMe slot and no 2.5-inch bay or second M.2 slot, so upgrading storage means cloning or reinstalling to a new drive.

Will a 32 GB RAM module work in my GA401?

Probably — many owners report 32 GB SO-DIMMs working — but it's outside ASUS's rated specification (16 GB per module), so it's unconfirmed and unsupported. Stick to 16 GB if you want guaranteed compatibility.

Do I need to match the soldered RAM?

It's worth it. A module matching the soldered capacity keeps memory running dual-channel; with a mismatch, the excess runs single-channel, which can cost you performance in games and integrated-graphics workloads.

Official documents and references

• PDF ASUS GA401 Upgrade Guide (PDF)
  Official memory and SSD upgrade procedure, screw map and safety warnings.
• PDF ASUS GA401 Service Guide (PDF)
  Component locations, retention screws and reassembly notes for the 2021 GA401 family.
• ASUS ROG Zephyrus G14 — manuals and documentation
  Model-specific owner's manuals for exact disassembly.
• ROG Zephyrus G14 (2021) — specifications
  Official memory layouts, expansion slots and capacities.
• ROG Zephyrus G14 (2021) — specifications (Canada)
  Shows the alternative 8 GB-onboard SKU with a 24 GB maximum.