Smart, secure AI power for business ASUS ExpertBook B5 is a lightweight, AI-enhanced marvel that combines the latest Intel Core Ultra processor and built-in Intel Arc graphics1, ushering in a new era of productivity. It is your reliable business partner with superb on-the-go performance, enterprise-grade security and versatile customisation for strategic-thinking professionals — and infused with AI to make lighter work of the modern business world.
ASUS ExpertBook B5 also workforce computing deployments by seamlessly delivering customised solutions and supporting a variety of flexible configurations to meet specific needs, with options. This ultralight, premium design strikes the perfect balance of power and portability to precisely tackle intensive workflows and perfectly turbocharge productivity from the field to the boardroom.
Specifications
Design
Colour name
Gentle Grey
Product type
Laptop
Product colour
Black
Form factor
Clamshell
Housing material
Aluminium
Market positioning
Work
Introduction year
2025
Display
Display diagonal
35.6 cm (14")
Display resolution
1920 x 1200 pixels
Touchscreen
No
HD type
WUXGA
LED backlight
Yes
Native aspect ratio
16:10
Anti-glare screen
Yes
Display brightness
300 cd/m²
RGB colour space
NTSC
Colour gamut
45%
Maximum refresh rate
60 Hz
Contrast ratio (typical)
1000:1
Processor
Processor manufacturer
Intel
Processor family
Intel Core Ultra 7
Processor generation
Intel Core Ultra (Series 2)
Processor model
255H
Processor cores
16
Processor threads
16
Processor boost frequency
5.1 GHz
Performance cores
6
Efficient cores
8
Low Power Efficient-cores
2
Performance-core Max Turbo Frequency
5.1 GHz
Efficient-core Max Turbo Frequency
4.4 GHz
Low Power Efficient-core Max Turbo Frequency
2.5 GHz
Performance-core base frequency
2 GHz
Efficient-core base frequency
1.5 GHz
Low Power Efficient-core Base Frequency
700 MHz
Processor cache
24 MB
Processor base power
28 W
Maximum turbo power
115 W
Neural processor unit (NPU)
Neural processor unit (NPU)
Intel AI Boost
Sparsity support
Yes
Windows Studio effects support
Yes
AI software frameworks supported by NPU
DirectML, OpenVINO, Windows ML, ONNX RT, WebNN
Total processor performance up to
96 TOPs
NPU performance up to
13 TOPs
GPU performance up to
74 TOPs
Memory
Internal memory
16 GB
Internal memory type
DDR5-SDRAM
Memory form factor
SO-DIMM
Memory layout (slots x size)
1 x 16 GB
Memory slots
2x SO-DIMM
Storage
Total storage capacity
512 GB
Storage media
SSD
Total SSDs capacity
512 GB
Number of SSDs installed
1
SSD capacity
512 GB
SSD interface
PCI Express 4.0
NVMe
Yes
SSD form factor
M.2
M.2 SSD size
2280 (22 x 80 mm)
Optical drive type
No
Card reader integrated
Yes
Compatible memory cards
MicroSD (TransFlash)
Graphics
Discrete graphics card model
Not available
On-board graphics card
Yes
On-board GPU manufacturer
Intel
Discrete graphics card
No
On-board graphics card family
Intel Arc Graphics
On-board graphics card model
Intel Arc 140T
Audio
Audio system
Dirac
Camera
Front camera
Yes
Front camera resolution
1920 x 1080 pixels
Front camera HD type
Full HD
Infrared (IR) camera
Yes
Privacy camera
Yes
Privacy type
Privacy shutter
Network
Top Wi-Fi standard
Wi-Fi 7 (802.11be)
Wi-Fi standards
Wi-Fi 7 (802.11be)
Mobile network connection
No
Antenna type
2x2
Ethernet LAN
Yes
Ethernet LAN data rates
10,100,1000 Mbit/s
Bluetooth
Yes
Bluetooth version
5.4
Ports & interfaces
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
2
Ethernet LAN (RJ-45) ports
1
HDMI ports quantity
1
HDMI version
2.1
Thunderbolt 4 ports quantity
2
Intel® Thunderbolt 4
Yes
Combo headphone/mic port
Yes
USB Type-C DisplayPort Alternate Mode
Yes
Performance
Repairability index
9.7
Keyboard
Pointing device
Touchpad
Numeric keypad
No
Keyboard backlit
Yes
Software
Operating system architecture
64-bit
Trial software
1-month trial for new Microsoft 365 customers
Operating system installed
Windows 11 Pro
Battery
Battery technology
Lithium-Ion (Li-Ion)
Number of battery cells
3
Battery capacity
63 Wh
Power
AC adapter power
65 W
AC adapter frequency
50 - 60 Hz
AC adapter input voltage
100 - 240 V
AC adapter output current
3.25 A
AC adapter output voltage
20 V
USB Type-C charging port
Yes
USB Type-C required charging power (min)
55 W
USB Type-C required charging power (max)
65 W
USB Power Delivery (USB PD)
Yes
Security
Cable lock slot
Yes
Cable lock slot type
Kensington
Fingerprint reader
Yes
Smart card reader
Yes
Face recognition
Yes
Windows Hello
Yes
Trusted Platform Module (TPM)
Yes
Trusted Platform Module (TPM) version
2.0
Password protection
Yes
Password protection type
BIOS, HDD, User
Certificates
Compliance certificates
REACH
Sustainability
Sustainability certificates
ENERGY STAR, EPEAT Climate +, EPEAT Gold, Forest Stewardship Council (FSC) Recycled
Weight & dimensions
Width
315.1 mm
Depth
226.8 mm
Height (front)
1.75 cm
Height (rear)
1.79 cm
Weight
1.44 kg
Product details
Part number
B5405CC-LYU715X
Brand
ASUS
Supplier description
EXPERTBOOK B5405 U7-255H 16GB 512GB 14IN WIN11 PRO 1YR PUR
EAN
4711636012607
In the box
AC adapter included: Yes
Delivery & returns
Delivery: £5.99 on orders under £50, free on orders over £50. In-stock items are delivered within 2 to 4 working days (UK). We email you when your order ships.
Returns and faults: most products carry a manufacturer's warranty. Email hello@redeagle.tech and we arrange the return with our distributor for you. Full details: returns policy and shipping policy.
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