ASUS ROG Zephyrus S GX531GW (2019) Specifications
The ASUS ROG Zephyrus S GX531GW (2019) is a gaming laptop designed for enthusiasts seeking strong performance. This guide covers RAM, SSD, charger compatibility, and upgrade paths for this model. For a comprehensive overview of all ASUS upgradeable models, visit the ASUS Laptop Upgrades hub.
| Component | Specification |
|---|---|
| Processor | i7-8750H + RTX 2070 |
| RAM | DDR4, 1 slot (upgradeable) |
| Max RAM | 24GB (soldered) |
| Storage | M.2 2230 NVMe PCIe Gen3, 1 slot |
| Charger | 180W Barrel |
| Ports | 1x USB-C, 2x USB 3.0, 1x HDMI |
| Display | 15.6″ FHD IPS 240Hz |
| Weight | 2.1 kg (4.63 lbs) |
Memory Upgrade Path

The ROG Zephyrus S GX531GW has partially soldered RAM with 1 user-accessible slot for additional memory, up to 24GB (soldered).
Recommended DDR4 RAM Upgrades:
- Corsair Vengeance DDR4 SO-DIMM — Reliable DDR4 laptop memory with wide compatibility.
- Kingston Fury Impact DDR4 SO-DIMM — Compact high-performance DDR4 for laptops.
- Crucial DDR4 SO-DIMM — Affordable DDR4 with solid performance.
Storage Expansion

The ROG Zephyrus S GX531GW uses an M.2 2230 NVMe SSD with a NVMe PCIe Gen3 interface. The single M.2 slot supports drives up to 2TB.
Recommended M.2 2230 SSDs:
- WD SN740 2230 NVMe — Reliable compact SSD for the 2230 form factor.
- Samsung PM991a 2230 — High-performance OEM SSD in compact 2230 size.
- Kioxia BG5 2230 — Compact 2230 NVMe with good availability.
Note: M.2 2230 drives are less common than the standard 2280. Verify compatibility before purchasing.
Power Delivery & Charging
The ROG Zephyrus S GX531GW uses a 180W Barrel charger. This uses a proprietary barrel connector. Use the original charger or a compatible replacement rated for the same wattage.
Port & Docking Capabilities
Connectivity: 1x USB-C, 2x USB 3.0, 1x HDMI
A USB-C docking station like the Anker 577 USB-C Hub provides additional ports including HDMI, Ethernet, and USB-A.
Upgrade Difficulty & Tools Required
The ROG Zephyrus S GX531GW has a difficulty rating of 2/5 for upgrades (5 = easiest). The upgrade process is difficult — limited user-accessible components.
Tools needed:
- Phillips screwdriver (M2.5 or similar)
- Plastic spudger or pry tool (for bottom panel clips)
- ESD wrist strap (optional but recommended)
We recommend backing up your data and consulting the official service manual before opening the chassis.
Frequently Asked Questions
Can I upgrade the RAM in the ASUS ROG Zephyrus S GX531GW?
The ROG Zephyrus S GX531GW has partially soldered RAM with 1 additional user-accessible slot, supporting up to 24GB (soldered).
What is the maximum RAM for the ROG Zephyrus S GX531GW?
The ROG Zephyrus S GX531GW supports up to 24GB (soldered) of DDR4 memory.
What size SSD does the ROG Zephyrus S GX531GW use?
The ROG Zephyrus S GX531GW uses an M.2 2230 NVMe SSD. Make sure to purchase the correct form factor for compatibility.
What charger does the ROG Zephyrus S GX531GW need?
The ROG Zephyrus S GX531GW uses a 180W Barrel charger.
Is the ROG Zephyrus S GX531GW easy to upgrade?
The ROG Zephyrus S GX531GW has a difficulty rating of 2/5. Consider professional assistance for upgrades.
Recommended Products
These are the products we recommend based on this guide. All links go to Amazon UK where you can check current prices and availability.
| Product | Why We Recommend It | Amazon UK |
|---|---|---|
| Corsair Vengeance DDR4 SO-DIMM | Reliable DDR4 laptop memory with wide compatibility. | View on Amazon UK |
| Kingston Fury Impact DDR4 SO-DIMM | Compact high-performance DDR4 for laptops. | View on Amazon UK |
| Crucial DDR4 SO-DIMM | Affordable DDR4 with solid performance. | View on Amazon UK |
| WD SN740 2230 NVMe | Reliable compact SSD for the 2230 form factor. | View on Amazon UK |
| Samsung PM991a 2230 | High-performance OEM SSD in compact 2230 size. | View on Amazon UK |
| Kioxia BG5 2230 | Compact 2230 NVMe with good availability. | View on Amazon UK |
Prices and availability may vary. As an Amazon Associate, we earn from qualifying purchases.
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