ASUS ExpertBook B3 B3405CCA-LY1653X U7-255H/ 16GB/ 512GB SSD
PRODUCT DESCRIPTION
ASUS ExpertBook B3 B3405CCA-LY1653X (90NX08L1-M01XR0) - 3 Years International Warranty
Built for Field Use: Smart Card Login and MIL-STD 810H in a 14-Inch Chassis
This is SourceIT's second Shopify listing for the ASUS ExpertBook B3 B3405CCA-LY1653X — same part number, same specification, a separate stock batch (internal item code 90NX08L1-M01XR0). The laptop itself: Intel Core Ultra 7-255H processor, 16GB DDR5 memory, 512GB PCIe 4.0 NVMe SSD, a 14-inch WUXGA (1920 x 1200) non-touch display, Windows 11 Pro preinstalled, and a chassis tested to MIL-STD 810H for shock, vibration, temperature extremes, humidity and altitude.
What sets the B3405 range apart from the rest of our ExpertBook catalogue is the connectivity: a built-in smart card reader, a microSD reader and RJ45 Gigabit Ethernet, none of which appear on the slimmer ExpertBook Ultra B9406 or ExpertBook P5405 ranges. If your organisation authenticates with a physical smart card or PKI token, this is the ExpertBook to buy.
Intel Core Ultra 7-255H Processor
16 cores and 16 threads, 2.0 GHz base clock rising to 5.1 GHz, 24MB cache, with an integrated Intel AI Boost NPU rated up to 13 TOPS for lighter on-device AI tasks. There is no discrete GPU in this chassis — graphics run on the integrated Intel Graphics built into the chip, which is the norm for a business laptop in this class and handles office, browser and video-call workloads without issue, though it is not intended for gaming or GPU-accelerated creative work.
Display: 14-Inch WUXGA, 16:10
1920 x 1200 resolution across a 14-inch panel in the taller 16:10 aspect ratio, anti-glare, 300 nits brightness, 45% NTSC colour gamut, 84% screen-to-body ratio. It shows more vertical content — a longer spreadsheet or document — than a standard 16:9 Full HD screen at the same horizontal width, without the added expense of the sharper 2560 x 1600 panel fitted to our ExpertBook B5405CCA listing.
16GB DDR5, Field-Upgradeable to 64GB
The 16GB DDR5 SO-DIMM memory in this configuration is not soldered, so it can be serviced and upgraded — ASUS documents a 64GB maximum for this chassis, well above the 32GB ceiling on the ExpertBook B5405 range. The 512GB primary SSD sits in an M.2 NVMe PCIe 4.0 slot, and a self-encrypting drive variant is available from ASUS as a build option for organisations needing hardware-level data-at-rest encryption.
The Port Layout That Justifies This Chassis
2 x Thunderbolt 4, 2 x further USB 3.2 Type-C, 2 x USB 3.2 Type-A, RJ45 Gigabit Ethernet, HDMI 2.1, a 3.5mm audio jack, and — the two ports worth calling out specifically — a built-in smart card reader and a microSD reader. That is a materially wider port set than the ExpertBook Ultra B9406 or ExpertBook P5405 ranges, both of which drop Ethernet and card readers entirely in favour of a thinner chassis. For a field technician, a healthcare worker or a public-sector deployment authenticating against CorpPass or a PKI card, that built-in reader is the whole reason to choose this chassis over a lighter alternative.
Security: Fingerprint, TPM 2.0, Kensington Lock
A fingerprint sensor covers Windows Hello sign-in, TPM 2.0 handles hardware-backed BitLocker key storage, Intel Boot Guard protects the boot chain, and a Kensington Nano Security Slot lets the unit be cable-locked when left at a desk or in a shared workspace. The physical camera shutter blocks the 1080p webcam mechanically, independent of any software setting.
Supplied Locally, with GST Invoice and Singapore Warranty
SourceIT supplies the ASUS ExpertBook B3 B3405CCA-LY1653X with a full GST invoice and local Singapore support. ASUS backs this model with a 3-year international warranty including local carry-in and onsite service in Singapore, so most hardware issues are resolved locally rather than by shipping the unit overseas.
We currently list this exact part number across two separate Shopify pages from two stock batches — order from whichever is convenient, or email sales@sourceit.com.sg quoting B3405CCA-LY1653X and we will confirm current stock and lead time across both for you.
ASUS B3405CCA-LY1653X Datasheet — Technical Specifications
General
| ASUS Product Name | ASUS ExpertBook B3 B3405CCA-LY1653X |
| Part Number (PN) | B3405CCA-LY1653X |
| Internal Item Code | 90NX08L1-M01XR0 |
| Range | ASUS ExpertBook B3, B3405 chassis, Intel Core Ultra ("Arrow Lake-H") generation |
| Form Factor | 14-inch rugged business laptop |
| Operating System | Windows 11 Pro (preinstalled) |
| Manufacturer Warranty | 3 Years International Warranty with Local Carry-in & Onsite Service (ASUS) |
| Local Warranty (Singapore) | Included with every unit supplied by SourceIT, together with a GST invoice |
Display
| Screen Size | 14.0-inch, 16:10 |
| Resolution | WUXGA, 1920 x 1200 |
| Brightness | 300 nits |
| Colour Gamut | 45% NTSC |
| Screen-to-Body Ratio | 84% |
| Touch | Not touch-enabled |
Processor & Graphics
| Processor | Intel Core Ultra 7-255H, 2.0 GHz base, up to 5.1 GHz, 24MB cache, 16 cores, 16 threads, Intel AI Boost NPU up to 13 TOPS |
| Graphics | Intel Graphics (integrated) |
| Chipset | Integrated (SoC platform) |
Memory & Storage
| Memory Installed | 16GB DDR5 SO-DIMM |
| Memory Upgradeable | Yes — up to a documented maximum of 64GB |
| Primary Storage | 512GB M.2 NVMe PCIe 4.0 SSD (self-encrypting drive available as an ASUS option) |
Keyboard & Trackpad
| Keyboard | Backlit chiclet keyboard, 1.5mm key travel, spill-resistant |
| Trackpad | Clickpad with multi-touch gesture support |
Ports & Connectivity
| USB Type-C | 2 x Thunderbolt 4, 2 x USB 3.2 Type-C |
| USB Type-A | 2 x USB 3.2 Type-A |
| Video Output | 1 x HDMI 2.1 |
| Wired LAN | 1 x RJ45 Gigabit Ethernet |
| Card Readers | Smart card reader, microSD card reader |
| Audio | 1 x 3.5mm combo audio jack |
| Wireless LAN | Wi-Fi 6E (802.11ax), triple band, 2x2 |
| Bluetooth | Bluetooth 5.4 |
| Webcam | 1080p FHD camera with IR function, plus privacy shutter |
Battery & Power
| Battery | 63WHrs, 3S1P, 3-cell lithium-ion |
| Power Adapter | USB-C power adapter |
Physical & Build
| Dimensions (W x D x H) | 31.51 x 22.68 x 1.05-1.90 cm |
| Net Weight | Starting from 1.45 kg |
| Durability | US MIL-STD 810H military-grade testing (shock, vibration, temperature, humidity, altitude) |
Security
| TPM | TPM 2.0, discrete/firmware, Intel Boot Guard |
| Biometric | Fingerprint sensor for Windows Hello |
| Webcam Privacy | Physical camera shutter |
| Physical Lock | Kensington Nano Security Slot |
| Package Contents | Laptop, USB-C power adapter, quick-start user documentation, warranty card |
Connectivity & Setup / Security Features
Smart Card Authentication, Built In
The built-in smart card reader is the standout feature for regulated or public-sector deployments in Singapore — PKI cards and similar physical tokens read directly without an external USB reader. The microSD reader rounds out a card-reading capability most of our slimmer ExpertBook listings no longer carry.
Wired and Wireless Networking Together
RJ45 Gigabit Ethernet is built in for offices that still run wired networking, and Wi-Fi 6E (triple band, 2x2) with Bluetooth 5.4 covers wireless peripherals and general connectivity. Between the two Thunderbolt 4 ports, two additional USB-C ports and HDMI 2.1, this chassis has more simultaneous display and dock options than our thinner ExpertBook ranges.
On-Device AI, Lightly
The Intel AI Boost NPU built into the Core Ultra 7-255H (up to 13 TOPS) handles lighter on-device AI tasks such as Windows Studio Effects locally, without pulling cycles from the CPU or sending that processing to the cloud.
Sign-In, Encryption and Physical Security
Fingerprint-based Windows Hello sign-in and a TPM 2.0 chip for hardware-backed BitLocker key storage cover the standard corporate IT security baseline in Singapore. The Kensington Nano Security Slot secures the unit physically at a desk, and the camera shutter is a mechanical cover rather than a software toggle, so it cannot be bypassed by an app requesting camera access.
Package Contents & Ordering Information
In the Box
ASUS ExpertBook B3405CCA-LY1653X laptop, USB-C power adapter, quick-start user documentation, warranty card. No mouse is included as standard.
A Note on This Part Number
This listing (internal item code 90NX08L1-M01XR0) and SourceIT's other Shopify page for B3405CCA-LY1653X (internal item code 90NX08L1-M01XT0) are the same ASUS part number from two separate stock intakes, carrying identical specifications. Neither is more "current" than the other — buy from whichever page you are on, or email sales@sourceit.com.sg quoting B3405CCA-LY1653X for a combined stock and lead-time check across both.
Related ExpertBook B-Series Model in Our Catalogue
| B3405CCA-LY1653X (this listing) | Intel Core Ultra 7-255H — 16GB DDR5 / 512GB SSD — 14" WUXGA — RJ45 + smart card reader |
| B5405CCA-NZ0226X | Intel Core Ultra 7-255H — 16GB DDR5 / 512GB SSD — 14" WQXGA (2560x1600), no smart card reader |
Datasheet & Downloads
ASUS hosts the official product and specification pages for this model family. The links below are ASUS's current pages for the B3405 chassis.
| ASUS product page | ASUS ExpertBook B3 (B3405) — Overview |
| ASUS specifications page | ASUS ExpertBook B3 (B3405) — Full Specifications |
For the PDF datasheet, user manual or driver downloads specific to this B3405CCA-LY1653X configuration, email sales@sourceit.com.sg quoting B3405CCA-LY1653X and the internal code 90NX08L1-M01XR0, and we will send you the current files directly.
Frequently Asked Questions — ASUS B3405CCA-LY1653X
This page and another SourceIT listing both show B3405CCA-LY1653X — is that an error?
No. Both pages carry the same genuine ASUS part number from two separate stock batches, and both are accurate. Buy from either one, or email us and we will point you to whichever has better current stock.
What is the smart card reader used for?
Physical smart-card or PKI-token authentication — common in government, finance and healthcare deployments in Singapore. It reads the card directly, without needing an external USB card reader.
Is the memory upgradeable, and to how much?
Yes — 16GB DDR5 ships as standard, in a SO-DIMM slot rather than soldered, with ASUS documenting a maximum of 64GB for this chassis.
Does it have wired Ethernet built in?
Yes, a built-in RJ45 Gigabit Ethernet port — no dongle or dock required for a wired connection.
What durability standard has ASUS tested this chassis to?
MIL-STD 810H, the US military standard covering shock, vibration, extreme temperature, humidity and altitude — relevant if this laptop will travel outside a controlled office setting regularly.
How does this compare to the ExpertBook B5405CCA in your catalogue?
Same Core Ultra 7-255H processor, same memory and storage. This B3405 has a smart card reader, microSD reader and MIL-STD 810H durability testing that the B5405 does not; the B5405 in turn has a sharper WQXGA (2560 x 1600) display against this unit's WUXGA (1920 x 1200) panel.
Is there a discrete GPU?
No — graphics are handled by the integrated Intel Graphics built into the processor, sufficient for office and video-conferencing work but not gaming or GPU-accelerated rendering.
Can I get a version with a self-encrypting drive?
ASUS offers a self-encrypting SSD as a build option on this chassis. Confirm with us before ordering whether that option is available on the specific stock batch behind this listing.
Does it come with a Singapore warranty and a GST invoice?
Yes. Every ASUS ExpertBook B3 B3405CCA-LY1653X sold by SourceIT comes with local Singapore support and a GST invoice; ASUS backs this model with a 3-year international warranty including local carry-in and onsite service.
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