In depth comparison and review of ASUS ExpertBook B5 (B5402CEA) and Lenovo ThinkPad L15 Gen 3 (21C7). Compare sizes, performance, storage capacities, batteries and other important specifications and features to easily choose the right laptop for you. Our goal is to help you uncover differences between the products and find the laptop that will best fit your needs.
Advantages and disadvantages of ASUS ExpertBook B5 (B5402CEA) based on its technical characteristics, features, user experience, expert reviews and price level.
lightweight and portable
robust security features
efficient multitasking performance
long battery life
fast charging support
average display quality
limited graphics performance
higher price point
noisy under load
Advantages and disadvantages of Lenovo ThinkPad L15 Gen 3 (21C7) based on its technical characteristics, features, user experience, expert reviews and price level.
robust build quality
excellent keyboard feel
good battery life
adequate performance level
reliable security features
average display quality
limited graphics power
heavier than competitors
no thunderbolt support
| DESIGN AND DIMENSIONS | ASUS ExpertBook B5 (B5402CEA) | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Product Type | Notebook | Notebook - 180-degree hinge design |
|---|---|---|
| Dimensions (WxDxH) | 32.34 cm x 22.31 cm x 1.8 cm | 36.02 cm x 23.7 cm x 1.993 cm |
| Weight | 1.22 kg | 1.76 kg |
| Case Material | Aluminum, magnesium-aluminum alloy | Polycarbonate ABS (bottom), polycarbonate ABS (top) |
| Colour | Star black | Thunder black |
| DISPLAY | ASUS ExpertBook B5 (B5402CEA) | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Screen Size (Type) | 14" | 15.6" - IPS |
|---|---|---|
| Screen Resolution | 1920 x 1080 (Full HD) | 1920 x 1080 (Full HD) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:9 |
| Image Brightness | 400 cd/m² | 250 cd/m² |
| Colour Gamut | 100% sRGB | 45% NTSC |
| Features | Anti-glare, 85% screen-to-body ratio | Anti-glare |
| PROCESSOR | ASUS ExpertBook B5 (B5402CEA) | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| CPU | Intel Core i5 (11th Gen) 1155G7 / 2.5 GHz | AMD Ryzen 3 Pro 5475U / 2.7 GHz |
|---|---|---|
| Max Turbo Speed | 4.5 GHz | 4.1 GHz |
| Number of Cores | Quad-Core | Quad-Core |
| Cache | 8 MB | L3 - 8 MB |
| Features | Intel Smart Cache | Integrated memory controller |
| MEMORY | ASUS ExpertBook B5 (B5402CEA) | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| RAM | 8 GB (provided memory is soldered) | 8 GB (1 x 8 GB) |
|---|---|---|
| Max RAM Supported | 40 GB | 64 GB |
| RAM Type | DDR4 SDRAM | DDR4 SDRAM |
| Speed | - | 3200 MHz |
| Rated Speed | - | 3200 MHz |
| Form Factor | SO-DIMM 260-pin | SO-DIMM 260-pin |
| Slots Qty | 1 | 2 |
| Empty Slots | 1 | 1 |
| STORAGE | ASUS ExpertBook B5 (B5402CEA) | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 PCIe 3.0 - NVM Express (NVMe) | 256 GB SSD M.2 2242 PCIe 4.0 x4 - TCG Opal Encryption 2, NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | ASUS ExpertBook B5 (B5402CEA) | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Graphics Processor (GPU) | Intel Iris Xe Graphics | AMD Radeon Graphics |
|---|---|---|
| Max Monitors Supported | - | 3 external monitor(s) |
| Video System Features | Functions as Intel UHD graphics (for single-channel memory) | - |
| Camera | Yes - 720p | Yes - 1080p |
| Camera Features | Privacy shutter, IR camera, Windows Hello | Privacy shutter, Windows Hello, fixed focus, hybrid FHD/IR camera |
| Sound | Stereo speakers, array microphone | Stereo speakers, dual array microphone |
| Codec | - | Realtek ALC3287 |
| Compliant Standards | - | High Definition Audio, Dolby Audio |
| Audio Features | - | Input: Dolby Voice, far-field |
| COMMUNICATIONS | ASUS ExpertBook B5 (B5402CEA) | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Wireless | 802.11a/b/g/n/ac/ax, Bluetooth 5.1 | Bluetooth 5.1, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) |
|---|---|---|
| Wireless Controller | - | AMD RZ616 - M.2 Card |
| Network Interface | Gigabit Ethernet | Gigabit Ethernet |
| Ethernet Controller | - | Realtek RTL8111EPV |
| Compliant Standards | - | DASH |
| Features | Dual stream (2x2) | Wake-on-LAN (WOL), dual stream (2x2) |
| BATTERY | ASUS ExpertBook B5 (B5402CEA) | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Technology | 3-cell Lithium Ion | Lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 63 Wh | 57 Wh |
| AC ADAPTER | ASUS ExpertBook B5 (B5402CEA) | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt, 20 V, 3.25 A | 65 Watt |
| INPUT | ASUS ExpertBook B5 (B5402CEA) | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Type | Keyboard, NumberPad | Keyboard, TrackPoint, UltraNav |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | Yes | Yes |
| Features | Chiclet keyboard, 1.5mm travel distance | Spill-resistant, multi-touch touchpad, Fn keys with Unified Communications controls |
| CONNECTIONS & EXPANSIONS | ASUS ExpertBook B5 (B5402CEA) | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Slots | 2 x M.2 (PCI Express 3.0 x4) (1 free) | - |
|---|---|---|
| Interfaces | USB 2.0 LAN Headphone/microphone combo jack USB 3.2 Gen 2 2 x USB-C (supports Thunderbolt 4, DisplayPort Alt Mode) (Power Delivery) HDMI |
USB-C 3.2 Gen 1 (supports DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) USB 3.2 Gen 1 USB 3.2 Gen 1 (Always On) HDMI (4K support) USB-C 3.2 Gen 2 (supports DisplayPort 1.4 Alt Mode) (Power Delivery 3.0) Headphone/microphone combo jack LAN |
| Memory Card Reader | Yes (microSD) | Yes (microSD) |
| SOFTWARE | ASUS ExpertBook B5 (B5402CEA) | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Operating System (OS) | Windows 11 Pro | Windows 10 Pro 64-bit Edition (available through downgrade rights from Windows 11 Pro) + Windows 11 Pro Licence - English / Portuguese |
|---|---|---|
| Software Included | - | Glance by Mirametrix |
| MISCELLANEOUS | ASUS ExpertBook B5 (B5402CEA) | Lenovo ThinkPad L15 Gen 3 (21C7) |
|---|
| Included Accessories | Power adapter | USB-C power adapter |
|---|---|---|
| Security | Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader | Discrete Trusted Platform Module (TPM 2.0) Security Chip, fingerprint reader, smart card reader |
| Security Slot Type | Kensington nano security slot | Kensington nano security slot |
| Theft/Intrusion Protection | Security lock slot (cable lock sold separately) | Security lock slot (cable lock sold separately) |
| Features | ErgoLift, MIL-STD-810H tested | Administrator password, power-on password, RapidCharge, MIL-STD-810H tested, self-healing BIOS, NVMe password |
| Compliant Standards | CTR 21, UL 1459, FCC Part 15 Class B, JIS C 0950, EU RoHS, EU REACH | RoHS, Energy-Related Products (ErP) Lot 3, TCG Certified |
| Carbon Footprint | - | 236 kg carbon emissions |
| Max Operating Temperature | - | 35 °C |
| Min Operating Temperature | - | 5 °C |
| Humidity Range Operating | - | 8 - 95% |
| Manufacturer Warranty | - | Limited warranty - 1 year - pick-up and return |
| Model Number | KI0266X | - |
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