Sub-1 kg magnesium-lithium 14" flagship — 2.8K OLED, dual Thunderbolt 4
ASUS' lightest business flagship. The B9403 pairs a 990 g magnesium-lithium alloy chassis with a 14" 2.8K OLED HDR True Black 600 panel, Intel Core Series 1 (Meteor Lake) silicon, dual Thunderbolt 4, and a 63 Wh battery — built to MIL-STD-810H. The executive ultraportable in the ExpertBook line.
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Aerospace-grade magnesium-lithium alloy brings the lightest configuration to just 990 g while still passing the MIL-STD-810H drop, shock, vibration, humidity and altitude regime. The lightest 14" business laptop ASUS ships.
14.0" 2880x1800 OLED at 90 Hz, 400 nits, 100% DCI-P3 and Pantone Validated, with VESA DisplayHDR True Black 600. Per-pixel black for sharp client decks and comfortable long-document reading.
Two Thunderbolt 4 (USB4) ports for single-cable docking, 40 Gbps transfer, power delivery and dual-4K external displays. USB-A 3.2 Gen 2 and HDMI 2.1 retained for legacy peripherals and projectors.
TPM 2.0, fingerprint sensor, FHD IR camera with Windows Hello and a physical webcam shutter. Intel vPro Essentials configuration adds hardware-level fleet manageability and below-OS protection.
A bundled micro-HDMI-to-RJ45 adapter delivers true wired Gigabit Ethernet without a dock - useful for secure office hot-desks and conference rooms where Wi-Fi is restricted.
A 63 Wh three-cell battery in a sub-1 kg chassis delivers a full business day of mixed office work, with 65 W USB-C fast charging from the same adapter that powers most ExpertBooks.
Harman/Kardon-tuned speakers with ASUS Smart Amp and Dolby Atmos, plus an AI noise-cancelling array microphone for clearer Teams and Zoom calls in open-plan offices.
The ASUS ExpertBook B9 OLED (B9403) is the flagship of the ExpertBook commercial line and ASUS' answer to the premium 14" executive ultraportable - the segment occupied by the ThinkPad X1 Carbon and Dell's thin-and-light Pro Premium. Its headline is weight: a magnesium-lithium alloy chassis brings the lightest configuration to just 990 g, materially lighter than almost every rival 14" business laptop, while still clearing the MIL-STD-810H durability regime.
The display is the other differentiator. Where most business ultraportables ship IPS, the B9403 uses a 14" 2.8K (2880x1800) OLED panel at 90 Hz, 400 nits, 100% DCI-P3 and VESA DisplayHDR True Black 600. For client-facing roles - consultants, partners, sales leadership - that means presentations and documents that look noticeably crisper than a standard office panel, with true blacks and wide colour for any creative-adjacent review work.
Silicon is Intel Core Series 1 (Meteor Lake U-series) - the Core 7 150U with vPro Essentials, or the Core 5 120U - paired with up to 64 GB of LPDDR5X and up to 2 TB of PCIe 4.0 NVMe storage. Connectivity is generous for a chassis this thin: dual Thunderbolt 4 (USB4), USB-A 3.2 Gen 2, full-size HDMI 2.1, and a bundled micro-HDMI-to-RJ45 adapter for wired Gigabit. A 63 Wh battery and 65 W USB-C charging round out an all-day travel machine.
For UK organisations, the B9 OLED is the natural default for executives, partners and senior client-facing staff who prioritise weight and screen quality. ASUS backs it with vPro Essentials manageability, TPM 2.0, IR Windows Hello and the ExpertGuardian security stack. Servnet supplies the ExpertBook range through the ASUS commercial channel with same-day UK quoting, VAT recovery, leasing and ASUS commercial warranty uplift.
At 990 g with a 2.8K OLED panel, the lightest, best-looking choice for board, partner and senior leadership travel.
Wide-colour OLED for crisp on-site presentations, dual Thunderbolt 4 docking and a bundled Ethernet adapter for secure client networks.
Sub-1 kg weight, MIL-STD-810H durability and all-day 63 Wh battery with 65 W USB-C charging from a compact adapter.
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