ASUS ExpertBook B9 (B9403CVA) (2023) Specifications
The ASUS ExpertBook B9 (B9403CVA) (2023) is a professional-grade laptop designed for business users seeking reliable performance and solid upgrade potential. 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 | 13th Gen Intel Core i5/i7 vPro (Raptor Lake) |
| RAM | LPDDR5-4800, 0 SO-DIMM slot (+ soldered) |
| Max RAM | 32GB (soldered, non-upgradeable) |
| Storage | M.2 2280 NVMe PCIe Gen4, 2 slots |
| Charger | 65W USB-C Power Delivery |
| Ports | 2× Thunderbolt 4, 1× USB-A 3.2, HDMI 2.0, microSD |
| Display | 14″ WUXGA (1920×1200) IPS, 16:10 |
| Weight | 0.88 kg (1.94 lbs) |
Memory Upgrade Path
The ExpertBook B9 (B9403CVA) has some RAM soldered to the motherboard, plus 0 SO-DIMM slot for LPDDR5-4800 expansion, allowing upgrades up to a maximum of 32GB (soldered, non-upgradeable).
Recommended LPDDR5 RAM Upgrades:
- Corsair Vengeance DDR5 SO-DIMM — Premium DDR5 with excellent compatibility. Reliable for business laptops.
- Kingston Fury Impact DDR5 SO-DIMM — Compact gaming-grade DDR5. Performs well at rated speeds.
- Crucial DDR5 SO-DIMM — Budget-friendly DDR5 option with solid performance and compatibility.
Storage Expansion (M.2 NVMe)
The ExpertBook B9 (B9403CVA) uses 2 M.2 2280 NVMe PCIe Gen4 slots. The slots support up to 4TB (2× 2TB).
Recommended M.2 2280 SSDs:
- Samsung 980 PRO 2280 — Top-tier Gen4 NVMe for maximum performance. Widely compatible.
- WD Black SN770 2280 — Excellent mainstream NVMe with strong sequential and random speeds.
- Kingston NV2 2280 — Budget NVMe SSD with reliable performance. Great value upgrade.
Power Delivery & Charging
The ExpertBook B9 (B9403CVA) uses a 65W USB-C Power Delivery charger. This is compatible with any USB-C PD charger of equal or higher wattage from brands like Anker, Ugreen, or the original ASUS charger.
Compatible Chargers:
- Anker 100W USB-C PD Charger — Compact, multi-port option. Works with this and other USB-C devices.
- Ugreen USB-C PD Charger (65W+) — Affordable universal charger with good reputation.
- INIU USB-C PD Fast Charger — Budget option with solid performance and portability.
Port & Docking Capabilities
Connectivity: 2× Thunderbolt 4, 1× USB-A 3.2, HDMI 2.0, microSD
The presence of Thunderbolt 4 (×2) provides fast external storage and high-bandwidth peripherals. Consider a Thunderbolt dock like the CalDigit TS4 or Belkin Thunderbolt 4 Dock Pro for desktop expansion with multiple displays and storage.
Upgrade Difficulty & Tools Required
The ExpertBook B9 (B9403CVA) has a difficulty rating of 2/5 for upgrades (5 = easiest). Ultra-lightweight at under 900g with soldered RAM — only the dual M.2 2280 SSDs can be upgraded.
Tools needed:
- Philips screwdriver (M2.5 or similar)
- ESD wrist strap (optional but recommended)
- Thermal paste (only if reapplying to heatsinks)
We recommend backing up your data and consulting your service manual before opening the chassis.
Frequently Asked Questions
Can I upgrade the RAM in the ASUS ExpertBook B9 (B9403CVA)?
Partially. Some RAM is soldered, but there is 0 SO-DIMM slot available for expansion.
What is the maximum RAM for the ExpertBook B9 (B9403CVA)?
The ExpertBook B9 (B9403CVA) supports up to 32GB (soldered, non-upgradeable) (LPDDR5-4800) with all expansion slots populated with matching modules.
What type of SSD does the ExpertBook B9 (B9403CVA) use?
The ExpertBook B9 (B9403CVA) uses a standard M.2 2280 NVMe SSD. This is the most common laptop SSD form factor with the widest range of compatible drives available.
Can I use a different USB-C charger with the ExpertBook B9 (B9403CVA)?
Yes, any USB-C Power Delivery charger rated for 65W or higher will work. Brands like Anker and Ugreen offer universal USB-C solutions.
Is the ExpertBook B9 (B9403CVA) compatible with a Thunderbolt dock?
Yes, the Thunderbolt 4 (×2) supports Thunderbolt docks for desktop expansion with multiple monitors and external storage.
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 16GB | Premium DDR5 with excellent compatibility. Reliable for business laptops. | View on Amazon UK |
| Kingston Fury Impact DDR5 SO-DIMM 16GB | Compact gaming-grade DDR5. Performs well at rated speeds. | View on Amazon UK |
| Crucial DDR5 SO-DIMM 16GB | Budget-friendly DDR5 option with solid performance and compatibility. | View on Amazon UK |
| Samsung 980 PRO 2280 NVMe 512GB | Top-tier Gen4 NVMe for maximum performance. Widely compatible. | View on Amazon UK |
| WD Black SN770 2280 NVMe 512GB | Excellent mainstream NVMe with strong sequential and random speeds. | View on Amazon UK |
| Kingston NV2 2280 NVMe 512GB | Budget NVMe SSD with reliable performance. Great value upgrade. | View on Amazon UK |
| Anker 100W USB-C PD Charger | Compact, multi-port option. Works with this and other USB-C devices. | View on Amazon UK |
| Ugreen USB-C PD Charger (65W+) | Affordable universal charger with good reputation. | View on Amazon UK |
| INIU USB-C PD Fast Charger | Budget option with solid performance and portability. | View on Amazon UK |
| CalDigit TS4 Thunderbolt Dock | Professional-grade Thunderbolt 4 dock with multiple ports, displays, and Ethernet. Top choice for desk setup. | View on Amazon UK |
Prices and availability may vary. As an Amazon Associate, we earn from qualifying purchases.
