ASUS ExpertBook B1 B1503CVA-S78673X U7-150U/ 16GB/ 512GB SSD
PRODUCT DESCRIPTION
ASUS ExpertBook B1 B1503CVA-S78673X (90NX0801-M09XT0) - 3 Years International Warranty
A 15.6-Inch Business Laptop Built for Everyday Office Use
The ASUS ExpertBook B1 B1503CVA-S78673X is a 15.6-inch business laptop powered by the Intel Core 7 150U processor, paired with 16GB of DDR5 memory and a 512GB PCIe 4.0 NVMe SSD on this configuration. It ships with Windows 11 Pro preinstalled, and sits in the entry-to-mainstream tier of our ExpertBook catalogue: a U-series processor chosen for battery efficiency and quiet, fanless-feeling operation over raw sustained performance, aimed at everyday office work rather than heavy compute.
At a starting weight of 1.64 kg and finished in Gentle Grey, the B1503 chassis is built to the US MIL-STD 810H durability standard used across the ExpertBook B and P ranges — genuinely useful for staff who move between sites, work from home some days, or simply want a laptop that survives daily commuting better than a consumer-grade machine.
CPU Positioning: U-Series vs H-Series
The Intel Core 7 150U is a U-series (28W configurable, typically runs closer to 15W) with 10 cores (2 Performance + 8 Efficiency) and 12 threads, running at 1.8 GHz base clock, boosting up to 5.4 GHz, with 12MB of cache. In practical terms the two Performance cores handle the application you are actively typing into, while the Efficiency cores absorb background tasks — sync clients, antivirus scanning, browser tabs — without competing for the cores doing your actual work. If your workload regularly pushes past word processing, spreadsheets, video calls and browser-based tools, the ExpertBook P1503/P1403 range in our catalogue offers the same chassis family with an H-series processor option for more sustained headroom.
16GB DDR5 Memory and 512GB SSD, Both User-Upgradeable
16GB of DDR5 memory is fitted across the chassis's SO-DIMM slots, upgradeable to a documented maximum of 64GB — a genuine advantage for a business that expects to keep these machines in service for several years and may need more memory down the line. A 512GB M.2 2280 NVMe PCIe 4.0 SSD is fitted in the primary slot, with a second free M.2 2230 PCIe 4.0 slot available for additional storage.
Fingerprint Login, TPM 2.0 and a Physically Shuttered Webcam
Security covers the basics a corporate IT policy typically asks for: a fingerprint sensor integrated into the trackpad for Windows Hello login, a TPM 2.0 chip for hardware-backed BitLocker encryption keys, and a 720p HD webcam with a physical privacy shutter that mechanically blocks the lens when not in use. A Kensington Nano Security Slot allows the unit to be cable-locked to a desk in an open-plan office.
Wired Ethernet and Windows 11 Pro Out of the Box
A built-in RJ45 Gigabit Ethernet port means no USB dongle or dock is needed for a wired connection, alongside Wi-Fi 6E (802.11ax), triple band, 2x2 and Bluetooth 5.4 for wireless. Wi-Fi 6E (triple band) is a step up from the Wi-Fi 6 (dual band) fitted to the ExpertBook P1503/P1403 range in our catalogue, giving access to the less congested 6 GHz band on a compatible router or access point. Windows 11 Pro is preinstalled, ready for domain join, Intune enrolment or a standard corporate imaging process.
Supplied Locally, with GST Invoice and Singapore Warranty
SourceIT supplies the ASUS ExpertBook B1 B1503CVA-S78673X with a full GST invoice and local Singapore support. ASUS backs this model with a 3-year international warranty that includes local carry-in and onsite service in Singapore, so a hardware fault is generally resolved without shipping the unit overseas.
Comparing this against the higher-storage B1403CVA-S60718X (1TB SSD) or the lower-power U5-120U configurations in our catalogue? Email sales@sourceit.com.sg with your budget and workload and we will help you pick the right configuration.
ASUS B1503CVA-S78673X Datasheet — Technical Specifications
General
| ASUS Product Name | ASUS ExpertBook B1 B1503CVA-S78673X |
| Part Number (PN) | B1503CVA-S78673X |
| Internal Item Code | 90NX0801-M09XT0 |
| Range | ASUS ExpertBook B1, B1503 chassis |
| Form Factor | 15.6-inch 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 | 15.6-inch, 16:9 |
| Resolution | FHD, 1920 x 1080 |
| Panel Type | IPS, anti-glare LED-backlit |
| Brightness | 300 nits |
| Colour Gamut | 45% NTSC |
| Screen-to-Body Ratio | 87% |
| Touch | Not touch-enabled |
Processor & Graphics
| Processor | Intel Core 7 150U, 1.8 GHz base, up to 5.4 GHz, 12MB cache, 10 cores (2 Performance + 8 Efficiency), 12 threads |
| Graphics | Intel UHD Graphics (integrated) |
| Chipset | Integrated (SoC platform) |
Memory & Storage
| Memory Installed | 16GB DDR5 SO-DIMM |
| Memory Upgradeable | Yes — 2 x SO-DIMM slots, up to 64GB total |
| Primary Storage | 512GB M.2 2280 NVMe PCIe 4.0 SSD |
| Storage Expansion | 1 x free M.2 2230 PCIe 4.0 slot |
Keyboard & Trackpad
| Keyboard | Backlit chiclet keyboard, 1.35mm key travel, spill-resistant |
| Trackpad | Clickpad with multi-touch gesture support, fingerprint sensor integrated |
Ports & Connectivity
| USB Type-C | 2 x USB 3.2 Gen 2 Type-C, DisplayPort & Power Delivery |
| USB Type-A | 2 x USB 3.2 Gen 1 Type-A |
| Video Output | 1 x HDMI 1.4 |
| Wired LAN | 1 x RJ45 Gigabit Ethernet |
| Audio | 1 x 3.5mm combo audio jack |
| Wireless LAN | Wi-Fi 6E (802.11ax), triple band, 2x2 |
| Bluetooth | Bluetooth 5.4 |
| Webcam | 720p HD camera with privacy shutter |
Battery & Power
| Battery | 42WHrs or 50WHrs, 3-cell lithium-ion (varies by configuration; SourceIT will confirm the exact cell size for this SKU on request) |
| Power Adapter | 65W USB-C AC adapter |
Physical & Build
| Dimensions (W x D x H) | 35.95 x 23.22 x 1.99 cm |
| Net Weight | Starting from 1.64 kg |
| Durability | US MIL-STD 810H military-grade testing (shock, vibration, temperature, humidity, altitude) |
| Colour | Gentle Grey |
Security
| TPM | TPM 2.0, discrete/firmware |
| Biometric | Fingerprint sensor for Windows Hello |
| Webcam Privacy | Physical camera shutter |
| Physical Lock | Kensington Nano Security Slot |
| Package Contents | Laptop, 65W USB-C AC power adapter, power cord, quick-start user documentation, warranty card |
Connectivity & Setup
Connecting Peripherals and Displays
Both USB 3.2 Gen 2 Type-C ports support DisplayPort and Power Delivery, so either port can charge the laptop from a compatible USB-C charger or dock, and either can drive an external display. The two USB 3.2 Gen 1 Type-A ports and the HDMI 1.4 output round out the set for mice, USB drives, docking hubs and a second monitor.
Wired and Wireless Networking
A Gigabit Ethernet (RJ45) port is built into the chassis, so a wired connection does not need a USB dongle. Wireless is Wi-Fi 6E (802.11ax), triple band, 2x2, paired with Bluetooth 5.4 for headsets, mice and other peripherals. Wi-Fi 6E (triple band) is a step up from the Wi-Fi 6 (dual band) fitted to the ExpertBook P1503/P1403 range in our catalogue, giving access to the less congested 6 GHz band on a compatible router or access point.
Setting Up Windows Hello and BitLocker
The trackpad-integrated fingerprint sensor and TPM 2.0 chip work together for a fast, secure login: enrol a fingerprint once in Windows Hello and users can unlock the laptop without typing a password each time, while the TPM stores BitLocker recovery keys in hardware rather than software, meeting the security baseline most Singapore corporate IT policies require before a device is allowed to hold company data. IT teams managing a fleet of these can push a standard BitLocker and Windows Hello policy through Intune or Group Policy at enrolment.
Webcam Privacy and Physical Security
The camera privacy shutter is a mechanical slide, not a software toggle — it physically blocks the 720p webcam lens, so no malware or misconfigured app can activate the camera without the user's knowledge. The Kensington Nano Security Slot accepts a standard cable lock, appropriate for hot-desking environments or exhibition and demo use where the laptop is left unattended briefly.
Package Contents & Ordering Information
In the Box
ASUS ExpertBook B1 B1503CVA-S78673X laptop, 65W USB-C AC power adapter and power cord, quick-start user documentation, warranty card. No mouse is included as standard.
Related ExpertBook B1 and P1 Models in Our Catalogue
SourceIT carries several other ExpertBook B1503, B1403, P1503 and P1403 configurations alongside this one. All are current commercial ASUS ExpertBook laptops for the Singapore market — email sales@sourceit.com.sg quoting the part number to check stock and lead time.
| B1503CVA-S70758X | Intel Core 7 150U — 16GB DDR5 / 512GB SSD — 15.6" FHD |
| B1503CVA-S78673X (this listing) | Intel Core 7 150U — 16GB DDR5 / 512GB SSD — 15.6" FHD |
| B1503CVA-S70539X | Intel Core 5 120U — 16GB DDR5 / 512GB SSD — 15.6" FHD |
| B1403CVA-S60718X | Intel Core 7 150U — 16GB DDR5 / 1TB SSD — 14.0" FHD |
| B1403CVA-NJ1209X | Intel Core 7 150U — 16GB DDR5 / 512GB SSD — 14.0" FHD — clearance, while stocks last |
| B1403CVA-S60720X | Intel Core 5 120U — 16GB DDR5 / 512GB SSD — 14.0" FHD |
| P1503CVA-S72291X | Intel Core 5 210H — 16GB DDR5 / 512GB SSD — 15.6" FHD |
| P1403CVA-S61550X | Intel Core 5 210H — 16GB DDR5 / 512GB SSD — 14.0" FHD |
Choosing Between the B1503, B1403 and P1503/P1403 Ranges
All four ExpertBook ranges in this family share MIL-STD 810H durability testing, TPM 2.0 and trackpad-integrated fingerprint login. The B1503 and B1403 use efficiency-focused U-series processors only (Core 7-150U or Core 5-120U here) and add Wi-Fi 6E; the ExpertBook P1503 and P1403 use the same physical chassis dimensions and port layout but also offer an H-series processor option (Core 5-210H) for more sustained CPU headroom, at the cost of stepping down to Wi-Fi 6. Email us your budget and workload and we will match you to the right range.
Datasheet & Downloads
ASUS hosts the official product and specification pages for this model family. The links below are ASUS's current Singapore pages for the B1503 chassis.
| ASUS Singapore product page | ASUS ExpertBook B1 (B1503) — Overview |
| ASUS Singapore specifications page | ASUS ExpertBook B1 (B1503) — Full Specifications |
For the PDF datasheet, user manual or driver downloads specific to the B1503CVA-S78673X configuration, email sales@sourceit.com.sg quoting B1503CVA-S78673X (internal code 90NX0801-M09XT0) and we will send you the current files directly.
Frequently Asked Questions — ASUS B1503CVA-S78673X
Is this suitable for a standard office fleet deployment?
Yes. Windows 11 Pro out of the box, TPM 2.0 and a fingerprint reader for corporate security policy compliance, and an ASUS 3-year international warranty with local carry-in and onsite service so fleet-wide support does not depend on couriering units overseas.
Can the RAM or storage be upgraded after purchase?
Yes — the B1503 uses two DDR5 SO-DIMM slots rather than soldered memory, upgradeable to a documented maximum of 64GB, and a second M.2 2230 slot is free alongside the 512GB primary drive for additional storage.
How does this compare with the ExpertBook P1503/P1403 in your catalogue?
Same chassis dimensions, ports and security features. This B1503 range uses efficiency-focused U-series processors only (Intel Core 7 150U here) and includes Wi-Fi 6E. The ExpertBook P1503/P1403 range also offers an H-series processor option for higher sustained performance, but steps down to Wi-Fi 6 (dual band).
What is the difference between the U-series and H-series processors ASUS offers on this chassis family?
U-series chips like the Intel Core 7 150U fitted here are tuned for battery efficiency and run cooler under light, everyday office loads — document processing, browser tabs, video calls. H-series chips, such as the Core 5-210H used in our ExpertBook P1503/P1403 range, run a higher base clock and hold performance better under sustained, CPU-bound work, at somewhat higher power draw.
Does it have a discrete graphics card?
No — graphics are handled by the integrated Intel graphics built into the processor, sufficient for office productivity, video conferencing and general multi-monitor use but not intended for gaming or GPU-accelerated rendering.
How does the physical webcam shutter work?
It is a mechanical slide built into the lid above the screen that physically covers the 720p webcam lens, so it cannot be bypassed by malware or an app requesting camera access without the user's knowledge.
Is Ethernet built in, or do I need a dongle?
A Gigabit RJ45 Ethernet port is built into the chassis, so no USB dongle is needed for a wired connection.
What durability testing has this laptop passed?
ASUS tests the B1503 chassis to the US MIL-STD 810H military standard, covering shock, vibration, extreme temperature, humidity and altitude.
Does it come with a Singapore warranty and a GST invoice?
Yes. Every ASUS ExpertBook B1 B1503CVA-S78673X 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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