ASUS ExpertBook B3 B3405CCA-LY1653X U7-255H/ 16GB/ 512GB SSD
PRODUCT DESCRIPTION
ASUS ExpertBook B3 B3405CCA-LY1653X (90NX08L1-M01XT0) - 3 Years International Warranty
A Rugged 14-Inch Business Laptop With Ethernet and a Smart Card Reader
The ASUS ExpertBook B3 B3405CCA-LY1653X runs the Intel Core Ultra 7-255H processor with 16GB of DDR5 memory and a 512GB PCIe 4.0 NVMe SSD, on a 14-inch WUXGA (1920 x 1200, 16:10) non-touch display. Windows 11 Pro is preinstalled. Where this B3405 range earns its place in our catalogue is the port selection: RJ45 Gigabit Ethernet, a smart card reader and a microSD reader are all built in, alongside dual Thunderbolt 4 and dual USB-C — a set aimed squarely at fleets that need physical smart-card login or removable-media workflows that a slimmer ultraportable simply does not offer.
ASUS tests the B3405 chassis to the MIL-STD 810H military durability standard, covering shock, vibration, temperature extremes, humidity and altitude — a genuinely different design brief from the ExpertBook Ultra B9406 or ExpertBook P5405 ranges we also carry, both aimed at maximum portability rather than field durability.
14-Inch WUXGA Display at 16:10
The panel is 14 inches, 1920 x 1200 (WUXGA, 16:10), non-touch, rated at 300 nits with 45% NTSC colour coverage and an 84% screen-to-body ratio. It is a step below the sharper 2560 x 1600 WQXGA panel on our ExpertBook B5405CCA listing, but the extra vertical space over a 16:9 Full HD panel is still a genuine advantage for spreadsheet and document work over a standard 1920 x 1080 screen.
Intel Core Ultra 7-255H: 16 Cores, Integrated NPU
The Core Ultra 7-255H runs at 2.0 GHz base, up to 5.1 GHz, 24MB cache, 16 cores and 16 threads, with an integrated Intel AI Boost NPU rated up to 13 TOPS handling lighter on-device AI tasks such as Windows Studio Effects. Graphics run on the integrated Intel Graphics built into the chip — no discrete GPU is fitted, which is standard for this class of business laptop and sufficient for office and video-conferencing work.
16GB DDR5 Memory, Upgradeable to 64GB
Memory ships at 16GB DDR5 in a SO-DIMM configuration, with ASUS documenting a maximum of 64GB for this chassis — a notably higher ceiling than the 32GB maximum on the B5405 range, useful if your deployment plans to keep these laptops in service for several years and expects memory demands to grow. Storage is a 512GB M.2 NVMe PCIe 4.0 SSD, with a self-encrypting drive available as an ASUS configuration option on this chassis for organisations with a data-at-rest encryption requirement.
Smart Card Reader and microSD Slot — Not on Every ExpertBook
Alongside 2 x Thunderbolt 4, 2 x USB 3.2 Type-C, 2 x USB 3.2 Type-A, RJ45 Ethernet, HDMI 2.1 and a 3.5mm audio jack, this chassis fits a built-in smart card reader and a microSD card reader — neither of which appears on the ExpertBook Ultra B9406, ExpertBook P5405 or ExpertBook B5405 ranges we also carry. For government, healthcare or finance-sector deployments in Singapore that rely on smart-card authentication (CorpPass tokens, PKI cards and similar), that built-in reader removes the need for an external USB card reader.
Fingerprint Sensor, Kensington Lock and MIL-STD 810H
Security covers a fingerprint sensor for Windows Hello, TPM 2.0, a Kensington Nano Security Slot for cable-locking the unit to a desk, and Boot Guard. The chassis is tested to MIL-STD 810H for shock, vibration, extreme temperature, humidity and altitude — relevant for field staff, technicians or anyone whose laptop travels outside a controlled office environment.
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.
Comparing this against our ExpertBook B5405CCA listing, or checking current stock and lead time on this exact part number? Email sales@sourceit.com.sg quoting B3405CCA-LY1653X and we will confirm availability.
ASUS B3405CCA-LY1653X Datasheet — Technical Specifications
General
| ASUS Product Name | ASUS ExpertBook B3 B3405CCA-LY1653X |
| Part Number (PN) | B3405CCA-LY1653X |
| Internal Item Code | 90NX08L1-M01XT0 |
| 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
Wired Ethernet and Card Readers for Fleet Deployments
The built-in RJ45 Gigabit Ethernet port needs no dongle for a wired connection, and the smart card reader is a genuine differentiator over the rest of our ExpertBook range — useful for government, finance or healthcare deployments in Singapore that require physical smart-card or PKI-token login rather than password-only authentication. The microSD reader is a convenience most ultraportables in our catalogue no longer carry.
Six Ways to Connect a Display or Dock
Between the two Thunderbolt 4 ports, two further USB 3.2 Type-C ports and the HDMI 2.1 output, there is more display and docking flexibility here than on our thinner ExpertBook ranges — useful for a desk with a permanent monitor setup as well as travel.
Wi-Fi 6E and the Integrated NPU
Wi-Fi 6E (triple band, 2x2) covers current office wireless needs, and the Intel AI Boost NPU built into the Core Ultra 7-255H (up to 13 TOPS) runs lighter on-device AI tasks such as Windows Studio Effects on video calls locally rather than loading the CPU.
Windows Hello, TPM 2.0 and Physical Security
The fingerprint sensor supports Windows Hello sign-in, and TPM 2.0 stores BitLocker recovery keys in hardware, meeting most Singapore corporate IT security baselines. The Kensington Nano Security Slot lets the unit be cable-locked to a desk, and the physical camera shutter mechanically blocks the webcam lens regardless of what software requests access to it.
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
SourceIT currently carries two separate Shopify listings for this exact ASUS part number, B3405CCA-LY1653X, reflecting two separate stock batches of the same physical product. Both list the identical specification described on this page. If you are ordering and want us to confirm which listing to buy from, or simply want the lead time and current stock across both, email sales@sourceit.com.sg quoting B3405CCA-LY1653X and we will sort it out for you rather than have you guess between two identical pages.
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 the B3405CCA-LY1653X configuration, email sales@sourceit.com.sg quoting B3405CCA-LY1653X (internal code 90NX08L1-M01XT0) and we will send you the current files directly.
Frequently Asked Questions — ASUS B3405CCA-LY1653X
Why does SourceIT have two Shopify listings for the same part number?
Both listings carry the identical ASUS part number B3405CCA-LY1653X and specification, reflecting two separate stock batches received at different times. Order from either — email us if you want us to confirm current stock and lead time across both before you buy.
Does this laptop have a smart card reader?
Yes — a built-in smart card reader is fitted, along with a microSD reader. This is not standard across our whole ExpertBook range; the B5405, P5405 and Ultra B9406 lines do not have one.
Does it have wired Ethernet?
Yes — a built-in RJ45 Gigabit Ethernet port, no adapter needed.
Can the memory be upgraded?
Yes — 16GB DDR5 ships as standard in a SO-DIMM configuration, with ASUS documenting a maximum of 64GB for this chassis.
What durability testing has this chassis passed?
ASUS tests the B3405 chassis to the US MIL-STD 810H military standard, covering shock, vibration, extreme temperature, humidity and altitude — relevant for field staff or anyone whose laptop leaves a controlled office environment regularly.
How does this compare to your ExpertBook B5405CCA listing?
Same processor (Core Ultra 7-255H), memory and storage. This B3405 has a smart card reader and microSD reader that the B5405 lacks, and MIL-STD 810H durability testing; the B5405 has a sharper WQXGA (2560 x 1600) display against this laptop's WUXGA (1920 x 1200) panel.
Does it have a discrete graphics card?
No — graphics run on the integrated Intel Graphics built into the processor, sufficient for office and video-conferencing use but not gaming or GPU-accelerated rendering.
Is a self-encrypting drive available?
Yes — ASUS offers a self-encrypting SSD as a configuration option on this chassis for organisations with a data-at-rest encryption requirement. Ask us to confirm availability for this specific part number before ordering if that applies to you.
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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