Quick Specs Summary
| Spec | Details |
|---|---|
| Display | 14″ |
| CPU | Intel Core Ultra 5 125U / Ultra 7 155U (Meteor Lake) |
| RAM Type | DDR5-5600 |
| RAM Slots | 2× SO-DIMM |
| Max RAM | 64GB |
| SSD Type | M.2 2280 PCIe Gen 4 NVMe |
| SSD Slots | 1 |
| Charger | 65W USB-C PD |
| Thunderbolt | Thunderbolt 4 |
| Upgradeability | ★★★★★ |
Can You Upgrade the ExpertBook B5?
The ASUS ExpertBook B5 B5404CVA is excellent — fully upgradeable ram (64gb) and ssd. Fully upgradeable: 2 DDR5 SO-DIMM slots with 64GB max. Best ASUS business laptop for upgradeability. SSD replaceable.
This guide covers exactly which components you can and can’t replace, what compatible upgrades cost, and how to do it safely. We’ll walk through RAM, SSD, charger options, and break down your upgradeability score at the end.
RAM Compatibility
The ASUS ExpertBook B5 B5404CVA uses DDR5-5600 RAM in 2× SO-DIMM slots. You can upgrade to a maximum of 64GB.
This model ships with 8GB / 16GB, but if you need more capacity — for development, virtualisation, video editing, or multitasking — you can upgrade easily after purchase.
Compatible RAM Modules
| Module | Spec | Price |
|---|---|---|
| Crucial DDR5-5600 16GB | DDR5-5600 SODIMM | £38 |
| Kingston Fury Impact DDR5-5600 32GB (2×16GB) | DDR5-5600 SODIMM | £70 |
| Corsair Vengeance DDR5-5600 32GB (2×16GB) | DDR5-5600 SODIMM | £75 |
Browse more RAM options on Amazon UK
SSD/Storage Compatibility
The ASUS ExpertBook B5 B5404CVA has 1 × M.2 2280 PCIe Gen 4 NVMe slot. You can replace the SSD with a faster or larger model.
Compatible SSD Drives
| Drive | Spec | Price |
|---|---|---|
| Samsung 990 Pro 1TB | M.2 2280 PCIe Gen 4 | £85 |
| WD Black SN850X 1TB | M.2 2280 PCIe Gen 4 | £75 |
| Crucial P5 Plus 1TB | M.2 2280 PCIe Gen 4 | £60 |
Charger Compatibility
The ASUS ExpertBook B5 B5404CVA charges via USB-C Power Delivery at 65W. This is excellent news — you can use compatible third-party chargers, charge from power banks, and simplify your cable collection.
Compatible USB-C Chargers
| Charger | Spec | Price |
|---|---|---|
| Anker Prime 67W GaN | USB-C PD 67W | £32 |
| Ugreen Nexode 65W | USB-C PD 65W | £28 |
Browse USB-C chargers on Amazon UK
Dock & Peripheral Compatibility
The ASUS ExpertBook B5 B5404CVA features Thunderbolt 4, which means you can use premium docking stations and achieve blazing-fast data transfers (up to 40 Gbps).
Top dock choices for Thunderbolt 4 machines:
- CalDigit TS4 — 98W charging, 6 × USB-A, Ethernet, SD card (£320)
- Anker 568 Dock — 65W charging, 3 × USB-A, HDMI (£45)
View our full dock compatibility guide.
Upgradeability Score Breakdown
| Component | Score | Notes |
|---|---|---|
| RAM | ★★★★★ | Fully upgradeable |
| SSD | ★★★★★ | Replaceable M.2 |
| Charger | ★★★★☆ | USB-C PD — use any compatible charger |
| Overall | ★★★★★ | Composite score across all upgradeable components |
How to Upgrade
Upgrading RAM or SSD in the ASUS ExpertBook B5 B5404CVA is straightforward and doesn’t require special tools beyond a Phillips #0 screwdriver.
RAM upgrade: Open the access panel on the underside, push the retention clips on the SO-DIMM slot, and slide in your new module at a 45° angle. Power off first!
SSD upgrade: Remove the M.2 cover, unscrew the drive retention screw, and slide in your new NVMe at the same 45° angle.
Check iFixit for a detailed ExpertBook B5 teardown guide before you start — it’s always good to see exactly what you’re working with.
Return to the ASUS laptop upgrade hub.
Frequently Asked Questions
What RAM does the ASUS ExpertBook B5 B5404CVA use?
The ASUS ExpertBook B5 B5404CVA uses DDR5-5600 in 2× SO-DIMM slots. Maximum capacity is 64GB.
Can I upgrade the RAM in the ASUS ExpertBook B5 B5404CVA?
Yes — this model ships with 8GB / 16GB but you can upgrade up to 64GB by replacing the SO-DIMM modules yourself.
What SSD fits the ASUS ExpertBook B5 B5404CVA?
An M.2 2280 PCIe Gen 4 NVMe SSD fits the ASUS ExpertBook B5 B5404CVA. Current options include the Samsung 990 Pro, WD Black SN850X, and Crucial P5 Plus.
What charger does the ASUS ExpertBook B5 B5404CVA need?
The ASUS ExpertBook B5 B5404CVA requires a 65W USB-C PD charger. Any compatible USB-C PD charger rated for this wattage will work.
Is the ASUS ExpertBook B5 B5404CVA good for upgrading?
Excellent — fully upgradeable ram (64gb) and ssd. Fully upgradeable: 2 DDR5 SO-DIMM slots with 64GB max. Best ASUS business laptop for upgradeability. SSD replaceable.
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 DDR5 SO-DIMM 32GB (2×16GB) 5600MHz | Top-rated DDR5 kit for gaming & productivity | View on Amazon UK |
| Kingston Fury Impact DDR5 SO-DIMM 32GB (2×16GB) 5600MHz | Excellent DDR5 alternative with XMP support | View on Amazon UK |
| Crucial DDR5 SO-DIMM 16GB 5600MHz | Affordable single-stick DDR5 | View on Amazon UK |
| G.Skill Ripjaws DDR5 SO-DIMM 32GB 5600MHz | High performance DDR5 for enthusiasts | View on Amazon UK |
| Samsung 990 Pro 2TB NVMe M.2 2280 | Fastest consumer NVMe — ideal for gaming & editing | View on Amazon UK |
| WD Black SN850X 2TB NVMe | Excellent Gen4 speed with heatsink option | View on Amazon UK |
| Crucial P5 Plus 1TB NVMe | Great value Gen4 SSD | View on Amazon UK |
| Kingston NV2 1TB NVMe | Budget-friendly with solid reliability | View on Amazon UK |
Prices and availability may vary. As an Amazon Associate, we earn from qualifying purchases.
