ExpertBook B9 OLED (B9403)
ASUS
Verified
Last verified 8/20/2026
Quick answers
- RAM
- Not upgradeable
Max: 32 GB
Type: LPDDR5X
Slots: 0
- SSD / Storage
- Upgradeable
Slots: 1
Form factor: M.2 2280
Interface: PCIe
PCIe gen: 4
- Charging
- USB-C charging
OEM adapter: 65 W
Connector: usb-c
- Displays
- Unknown
Outputs: usb-c-dp-alt-mode, hdmi
Explore compatibility in depth
What can I upgrade?
- Storage (SSD)
Ports and connectivity
| Port | Count | Protocols | Power Delivery | DP Alt Mode |
|---|---|---|---|---|
| Thunderbolt 4 | 2 | tb4, dp-alt-mode | In | Yes |
| USB 3.2 Gen 2 Type-A | 1 | usb-3.2-gen2 | — | No |
| HDMI 2.1 TMDS | 1 | hdmi-2.1 | — | No |
| 3.5mm Combo Audio Jack | 1 | — | — | No |
Sources used for this model
- ASUS — ASUS ExpertBook B9 OLED (B9403, Series 1 Intel) Tech Specs — verified 8/20/2026
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