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Lenovo ThinkPad L15 Gen 2 Intel vs ASUS ExpertBook B1 B1400 Comparison

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Lenovo ThinkPad L15 Gen 2 Intel

15.6 inches | January 2021

Speed 1.5
Size 8
Display 1.5
Gaming 1
Lenovo ThinkPad L15 Gen 2 Intel
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ASUS ExpertBook B1 B1400

14 inches | January 2021

Speed 1.5
Size 8.5
Display 2.5
Gaming 1
ASUS ExpertBook B1 B1400
CHECK AT AMAZON
Lenovo ThinkPad L15 Gen 2 Intel vs ASUS ExpertBook B1 B1400 Comparison Overview
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ASUS ExpertBook B1 B1400 ASUS ExpertBook B1 B...
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In this review, we will be comparing ThinkPad L15 Gen 2 Intel and ExpertBook B1 B1400, two laptops from Lenovo and ASUS. Lenovo ThinkPad L15 Gen 2 Intel was introduced to market in January 2021 and ASUS ExpertBook B1 B1400 was launched in January 2021. Both ThinkPad L15 Gen 2 Intel and ExpertBook B1 B1400 were launched within the same month so we are expecting this to be a fair comparison regarding age and available technology level.

Click for Available Configurations of the Laptops

Lenovo ThinkPad L15 Gen 2 Intel

RAM:
DISPLAY:

ASUS ExpertBook B1 B1400

RAM:
DISPLAY:

Here is a brief look at the main features of Lenovo ThinkPad L15 Gen 2 Intel and ASUS ExpertBook B1 B1400 before getting into our more detailed comparison.

Lenovo ThinkPad L15 Gen 2 Intel Key Specs

  • Launched in January 2021
  • 15.6" TN LCD, 16:9 Aspect Ratio Display
  • CPU: Intel Celeron 6305
  • GPU: GeForce MX450 2GB
  • 4GB Ram
  • 366.5 x 250 x 21 mm (14.43 x 9.84 x 0.83 inches)
  • Weight: 1.99 kg (4.39 lbs)

ASUS ExpertBook B1 B1400 Key Specs

  • Launched in January 2021
  • 14.0" IPS LCD, 16:9 Aspect Ratio Display
  • CPU: Intel Celeron 6305
  • GPU: Intel UHD Graphics Xe G4
  • 4GB Ram
  • 323.4 x 215.6 x 19.2 mm (12.73 x 8.49 x 0.76 inches)
  • Weight: 1.45 kg (3.2 lbs)

Let's read on the following sections in order to better understand in detail how ThinkPad L15 Gen 2 Intel and ExpertBook B1 B1400 compares and decide which one is better for you.

**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.

Reasons to choose Lenovo ThinkPad L15 Gen 2 Intel over ASUS ExpertBook B1 B1400
Display Size
15.6 inches vs 14 inches Larger Screen Estate
GPU FLOPS
2.822 TFLOPS vs 0.84 TFLOPS Dedicated GPU unit
GPU Type
Dedicated vs Integrated Higher RAM potential
Max Total RAM
64 GB vs 48 GB More advanced Bluetooth connectivity
Bluetooth
v5.2 vs v5 Connect more device at the same time
Number of USB-C Ports
2x USB 3.2 vs 1x USB 3.2 Fast way to input numbers
Numeric Pad
Yes vs No
Reasons to choose ASUS ExpertBook B1 B1400 over Lenovo ThinkPad L15 Gen 2 Intel
Weight
1.45 kg vs 1.99 kg 0.54 kg lighter
Screen-to-Body Ratio
~77.5% vs ~73.2% Larger screen area ratio
Side Bezel Thickness
6.8 mm vs 10.6 mm 3.8 mm thinner bezels
Noise Level
37.4 dB vs 37.8 dB Less fan noise
Screen PPI
112 ppi vs 100 ppi More pixels per inch
GPU Fabrication Process
10 nm vs 12 nm Newer Generation GPU
Speaker Loudness
81.1 dB vs 71.2 dB Generates higher sound levels
Number of USB-A Ports
3x USB 3.2 vs 2x USB 3.2 Connect more device at the same time
VGA
Yes vs No Option to use VGA port to connect to external monitors

Common Strengths of ASUS ExpertBook B1 B1400 and Lenovo ThinkPad L15 Gen 2 Intel
Screen Coating
Matte vs Matte Less reflections on the screen
Fast Charging Support
Yes vs Yes Charge the battery in a shorter time
USB Power Delivery
Yes vs Yes Charging via USB port gives flexibility
Upgradable RAM
Yes vs Yes Option to increase the RAM size
RAM Type
DDR4 vs DDR4 Fast RAM type
Upgradable Storage
Yes vs Yes Option to increase the Storage size
SSD Type
NVMe vs NVMe Faster Data Transfers
Wi-Fi Standard
v6 vs v6 Fast and Reliable Wi-Fi Connections
Thunderbolt Port
v4 vs v4 Fast data and power transfer via Thunderbolt Port
HDMI Output
1x HDMI 2.0 vs 1x HDMI 2.0 Connect to External Displays via HDMI cable
Ethernet RJ45 Port
Yes vs Yes Fast connection to Network via ethernet cable
Built-in SD Card Reader
Yes vs Yes Read & Write SD Cards
Keyboard Backlight
Yes vs Yes Easily see the keys under low light
Common Weaknesses of ASUS ExpertBook B1 B1400 and Lenovo ThinkPad L15 Gen 2 Intel
Touchscreen Capability
No vs No No Touchscreen Capability
HDR Support
No vs No No HDR Support
Lenovo ThinkPad L15 Gen 2 Intel vs ASUS ExpertBook B1 B1400: Physical Specs Comparison

In this section, we will be comparing the physical specifications and body features of the Lenovo ThinkPad L15 Gen 2 Intel and the ASUS ExpertBook B1 B1400.

Physical Specs
Weight 1.99 kg (4.39 lbs) 1.45 kg (3.2 lbs)
Surface Area 916 cm2 (142 inches2) 697 cm2 (108.1 inches2)
Screen to Surface Ratio ~73.2% ~77.5%
Side Bezel Thickness ~10.6 mm ~6.8 mm
Weight per Inch of Screen 0.13 kg/inch 0.10 kg/inch
0.286 lbs/inch 0.22 lbs/inch
Colors Black Black
Cover Opening Angle 180° 180°
Lenovo ThinkPad L15 Gen 2 Intel vs ASUS ExpertBook B1 B1400 Laptop Size Comparison - Front View
Comparison of the Lenovo ThinkPad L15 Gen 2 Intel and the ASUS ExpertBook B1 B1400 External Dimensions

Weight

ThinkPad L15 Gen 2 Intel weighs 1.99 kg (4.39 lbs), whereas the ExpertBook B1 B1400 weighs 1.45 kg (3.2 lbs). There is a notable difference in weight between these two laptops. However, it's important to consider that comparing their weights directly may not provide a complete picture since they also have different display sizes.
Weight Comparison
Lenovo ThinkPad L15 Gen 2 Intel
Avg: 15.0-15.9"
ASUS ExpertBook B1 B1400
Avg: 14.0-14.9"
Thickness Comparison
Lenovo ThinkPad L15 Gen 2 Intel
Avg: 15.0-15.9"
ASUS ExpertBook B1 B1400
Avg: 14.0-14.9"

Another value that we use for comparing the weights of the laptops is the Weight per Inch of Screen, which is calculated by dividing the total weight of the model with its usable diagonal screen size. This value for the Lenovo ThinkPad L15 Gen 2 Intel is 0.13 kg/inch.In comparison, this value for the ASUS ExpertBook B1 B1400 is 0.10 kg/inch.Here are some of the best performing laptops in this area:

  • Microsoft Surface Go 4: 0.05 kg/inch
  • LG Gram SuperSlim 15.6 2023: 0.06 kg/inch
  • Asus ProArt PZ13 HT5306: 0.06 kg/inch
  • Asus Zenbook A14 UX3407: 0.06 kg/inch
  • Microsoft Surface Pro 12: 0.06 kg/inch
  • Asus ProArt PZ14 HT7407: 0.06 kg/inch
  • Dell Latitude 7330: 0.07 kg/inch
  • Lenovo ThinkPad X1 Nano Gen 2: 0.07 kg/inch

Lenovo ThinkPad L15 Gen 2 Intel vs ASUS ExpertBook B1 B1400: Internals Comparison
CPU Comparison
CPU Model


Base Frequency 1.8 GHz 1.8 GHz
Number of Cores 2 2
Number of Threads 2 2
L3 Cache 4 MB 4 MB
Integrated GPU Intel UHD Graphics Xe G4 48 EUs Intel UHD Graphics Xe G4 48 EUs
CPU Fabrication Process 10 nm 10 nm
Geekbench 5 (Single) 520 520
Geekbench 5 (Multi) 1101 1101

Above you can see the CPU options and the CineBench and GeekBench test scores for both laptops, which gives an idea about what kind of performance difference you may experience between the Lenovo ThinkPad L15 Gen 2 Intel and ASUS ExpertBook B1 B1400.

You may also read reviews of latest laptops with the same CPU ( Intel Celeron 6305 ) and compare them:

  • HP ProBook 450 G8 Compare
  • HP ProBook 440 G8 Compare
  • Dell Latitude 3520 Compare
  • Dell Latitude 3420 Compare
GPU Comparison
GPU Model GeForce MX450 2GB
Intel UHD Graphics Xe G4 48 EUs
Base Clock Frequency 1395 MHz 300 MHz
Boost CLock Frequency 1575 MHz 1100 MHz
TGP (Total Graphics Power) 31 W 15 W
Type Dedicated Integrated
FLOPS 2.822 TFLOPS 0.84 TFLOPS
Memory Size 2 GB System Shared
Memory Type GDDR6 DDR4
Memory Bus 64 bit System Shared
Memory Speed ~8-10 Gbps 0 Gbps
Shading Units Cores 896 384
TMUs 56 24
ROPs 32 12

GPU is as critical as the CPU for graphic heavy applications and the table above gives a picture of how the two GPU compares. FLOPS is a measure of a GPU's performance based on the number of floating-point arithmetic calculations that the processor can perform within a second. Lenovo ThinkPad L15 Gen 2 Intel has a FLOPS value of 2.822 TFLOPS whereas the ASUS ExpertBook B1 B1400 ' has a FLOPS value of 0.84 TFLOPS. If graphical performance of the laptop is important for your use type, the Lenovo ThinkPad L15 Gen 2 Intel may be the better choice between these two setups.

RAM Comparison
RAM










Memory Bus 1x4 GB 1x4 GB
RAM Clock 3200 MHz
RAM Type DDR4 DDR4
Upgradable Yes Yes
Max RAM Size 64 GB 48 GB
Total Slots 2 1
Both laptops, the ThinkPad L15 Gen 2 Intel and the ExpertBook B1 B1400, come with similar RAM capacities of 4 GB, providing comparable performance in memory-intensive tasks.

LOCAL LLM Compatibility Evaluation

This quick guide shows what types of large language models (LLMs) each of these laptops could support, based on their respective hardware specifications. It's meant to help you compare their suitability for running AI models locally.

LLM CategoryLenovo ThinkPad L15 Gen 2 (Intel)ASUS ExpertBook B1 (B1400)
CPUIntel Celeron 6305Intel Celeron 6305
GPUGeForce MX450 2GBIntel UHD Graphics Xe G4 48 EUs
Memory4 GB ; 2 GB VRAM4 GB
Available for LLM total~2 GB (0.5 GB VRAM 1.5 GB RAM)~0.5 GB (0.5 GB RAM)
Small Models (1-3B): Examples: Phi-2, Qwen-1.8B
Requires ~2 GB memory
! Not Practical
doesn't fit in 2 GB VRAM, spills to RAM (VRAM + RAM, slower)
✖ Not Supported
exceeds available RAM
Medium Models (7-8B): Examples: Mistral-7B, Qwen-7B
Requires ~5 GB memory
✖ Not Supported
exceeds available RAM
✖ Not Supported
exceeds available RAM
Large Models
13-15B Models (e.g., Llama 3 14B, Qwen1.5 14B)
Requires ~9 GB memory
✖ Not Supported exceeds available RAM
✖ Not Supported exceeds available RAM
16-24B Models (e.g., Dense 20B Q4 ~15.5GB)
Requires ~14 GB memory
✖ Not Supported exceeds available RAM
✖ Not Supported exceeds available RAM
24-30B Models (e.g., Dense 30B Q4)
Requires ~18 GB memory
✖ Not Supported exceeds available RAM
✖ Not Supported exceeds available RAM
MoE Models (Mixture-of-Experts) (e.g., Mixtral 8x7B - total ~47B, active ~12-13B)
Requires ~24 GB memory
✖ Not Supported exceeds available RAM
✖ Not Supported exceeds available RAM
Extra-Large Models (65B+): Examples: LLaMA2-70B, Qwen1.5-72B
Requires ~42 GB memory
✖ Not Supported
exceeds available RAM
✖ Not Supported
exceeds available RAM

For more detailed LLM evaluation (subcategories, performance ranges, memory breakdown)

Lenovo ThinkPad L15 Gen 2 (Intel)|ASUS ExpertBook B1 (B1400)

Note: Optimized (e.g., 4-bit) models may run on limited hardware. Performance depends on runtime and setup.

📌 Model Types: Dense 30B Q4 models typically require around 19–22 GB of total VRAM, so they run best on systems with ≥24 GB VRAM. MoE models like Mixtral 8x7B (≈47B total parameters, usually ≈23–26 GB in 4-bit) also need high memory because all experts must be loaded, even though only a few are active per token. They reduce compute cost per token (similar to a ~12–13B dense model), but not memory usage, so they are not practical on 14–16 GB systems.

🚀 Modern NPU (Neural Processing Unit): Modern processors like AMD Ryzen AI and Intel Core Ultra feature NPU and unified memory architecture. NPUs provide modest performance gains (0-30% faster) with better power efficiency compared to iGPU-only execution. Real-world tests show ~3-10 tok/s range on 13B models with 32GB RAM (varies by runtime, quantization, and context), comparable to iGPU but more power-efficient. Note: These figures are examples from various NPU systems; actual performance depends on your specific hardware configuration.

Understanding Performance Categories

The performance descriptions use general categories because actual speed varies greatly based on your specific hardware, model optimization, context length, and runtime software.

Performance LevelTypical RangeUser Experience
Runs Smoothly
(High-end dGPU)
50+ tok/sReal-time response. Feels instant, like ChatGPT.
Runs Well
(Mid-range dGPU)
20-50 tok/sGood interactive performance. Slight delay, but usable.
Modest Speed
(iGPU/NPU/CPU)
5-20 tok/sUsable for tasks that don't need instant responses. Noticeable typing delay.
Borderline / Slow
(Limited hardware)
2-5 tok/sSlow-Very slow. Patience required. Better for batch processing.
Not Practical
<2 tok/sToo slow for regular use. May cause system hangs or instability.

💡 Tip: Your actual results may be higher or lower than these ranges. Test with your specific hardware to know for sure!

⚠️ Note: Performance categorization is based on VRAM capacity and RAM fallback status. GPU type (memory bandwidth, compute power) can also affect actual performance. Currently, we prioritize whether the model fits in VRAM or requires RAM fallback for classification. We may refine this categorization in future updates based on more detailed benchmarks.

BATTERY
BATTERY

Battery Type Li-Po Li-Ion
Replaceable No No
Fast Charging Yes Yes
USB Power Delivery Yes Yes
Charging Port Position Left Left
Charge Power 65 W 65 / 90 W
AC Adapter Weight 374 gramm 300 gramm
Moreover, the ThinkPad L15 Gen 2 Intel boasts a larger battery capacity of 45 Wh, offering extended usage time compared to the ExpertBook B1 B1400's42 Wh.

Battery Comparison
Lenovo ThinkPad L15 Gen 2 Intel
Avg: 15.0-15.9"
ASUS ExpertBook B1 B1400
Avg: 14.0-14.9"
STORAGE
The ExpertBook B1 B1400 offers a larger max storage capacity of 2 TB, providing more room for storing files and data compared to the ThinkPad L15 Gen 2 Intel's storage capacity of 1 TB.
Storage Options 128 GB, 256 GB, 512 GB, 1 TB 128 GB, 256 GB, 512 GB, 1 TB, 1 TB, 2 TB
Upgradable Yes Yes
Total Slots 1 1
Storage type SSD (M2) SSD (M2)
NVMe Yes Yes
Memory Bus PCI-E Gen 3.0 (4x) PCI-E Gen 3.0 (4x)

If your budget allows, we recommend opting for the largest possible disk size, considering the potential increase in storage capacity needs in the future. However, please keep in mind the question 'What will the laptop be used for?' when making this decision. Of course, you can later upgrade the hard disk capacity by getting a larger disk. However, if your laptop has only one disk slot, it may not be as straightforward as a RAM upgrade, where you simply add or replace a module, as moving or cloning files to a new disk may be necessary.

Lenovo ThinkPad L15 Gen 2 Intel vs ASUS ExpertBook B1 B1400: Display Comparison

The display is an essential aspect to consider when comparing the Lenovo ThinkPad L15 Gen 2 Intel and ASUS ExpertBook B1 B1400 since its is the component that you interact the most and significantly impact the experience.

Screen Area and Dimensions

Now let's look at the comparison of the actual display areas of both laptops below, keeping the bezels around the screens out of the equation. ThinkPad L15 Gen 2 Intel has a display size of 15.6".On the other hand, ExpertBook B1 B1400 has a smaller 14.0" display.The total usable screen area of the ThinkPad L15 Gen 2 Intel is 670cm2 / 104inch2 whereas the ExpertBook B1 B1400's total usable screen area is 540cm2 / 84inch2.


PPI (Pixels per Inch)
Additionally, the ExpertBook B1 B1400 features a higher pixel density with 112 pixels per inch (PPI), ensuring sharper image details.

Screen PPI (Pixels Per Inch) Comparison
Lenovo ThinkPad L15 Gen 2 Intel
Avg: 15.0-15.9"
ASUS ExpertBook B1 B1400
Avg: 14.0-14.9"

Refresh Rate
Both ThinkPad L15 Gen 2 Intel and ExpertBook B1 B1400 offer the same refresh rate of 60 Hz.

Brightness
Both ThinkPad L15 Gen 2 Intel and ExpertBook B1 B1400 offer the same maximum brightness of 220 nits (cd/m²).

Brightness Comparison
Lenovo ThinkPad L15 Gen 2 Intel
Avg: 15.0-15.9"
ASUS ExpertBook B1 B1400
Avg: 14.0-14.9"

Lenovo ThinkPad L15 Gen 2 Intel vs ASUS ExpertBook B1 B1400 Connectivity Comparison

In terms of connectivity,

Wifi
Both laptops offer the same Wi-Fi standard (v6), ensuring fast and reliable wireless connections.

Below, you'll find a Wi-Fi Versions Table, along with their release dates and speeds, to provide a brief overview of its development.

Wi-Fi Versions and Speeds
Standard Speed Release
Date
Network Frequency
Bands (GHz)
Wi-Fi 7 up to 40 Gbps
(5 GB/s)
2023 802.11be 2.4, 5, 6
Wi-Fi 6E up to 9.6 Gbps
(1.2 GB/s)
2020 802.11ax 2.4, 5, 6
Wi-Fi 6 up to 9.6 Gbps
(1.2 GB/s)
2019 802.11ax 2.4, 5
Wi-Fi 5 up to 6.93 Gbps
(866.25 MB/s)
2014 802.11ac 2.4, 5
Wi-Fi 4 up to 600 Mbps
(75 MB/s)
2009 802.11n 2.4, 5
* Please note that the provided transfer rates are maximum theoretical values, and real-life performance may vary based on environmental factors.

USB
Both ThinkPad L15 Gen 2 Intel and ExpertBook B1 B1400 have USB-A ports. ThinkPad L15 Gen 2 Intel has 2x USB 3.2 USB-A ports, while ExpertBook B1 B1400 has 3x USB 3.2 USB-A ports.
Both ThinkPad L15 Gen 2 Intel and ExpertBook B1 B1400 have USB Type-C ports. ThinkPad L15 Gen 2 Intel has 2x USB 3.2 USB Type-C ports, while ExpertBook B1 B1400 has 1x USB 3.2 USB Type-C ports.

Below, you'll find a table of USB ports, along with their release dates and speeds.
To mitigate the confusion caused by generation names, the USB Implementers Forum (USB-IF) suggests using marketing names like USB 5Gbps, USB 10Gbps, and so forth, based on their respective transfer rates.

USB Type and Speeds
USB Type Version Speed Date Other Features/Explanations
USB4 Gen 4 (2.0) 80 Gbps 2022 Also known as USB 80Gbps
USB4 Gen 3×2 40 Gbps 2019 Also known as USB 40Gbps
USB 3.2 3.2 Gen 2x2 20 Gbps 2019 Double the data transfer rates of Gen 2
USB 3.2 3.2 Gen 2 10 Gbps 2017 Previously known as USB 3.1
USB 3.2 3.2 Gen 1 5 Gbps 2017 Previously known as USB 3.0
USB 3.1 3.1 Gen 2 10 Gbps 2013 Faster data transfer rates
USB 3.0 3.1 Gen 1 5 Gbps 2010 SuperSpeed USB, improved data transfer rates
USB 2.0 2.0 480 Mbps 2000 High-speed data transfer
USB 1.0 1.0 1.5 Mbps 1996 Original USB standard

Thunderbolt
Both ThinkPad L15 Gen 2 Intel and ExpertBook B1 B1400 are equipped with Thunderbolt 4 ports.

HDMI
Both ThinkPad L15 Gen 2 Intel and ExpertBook B1 B1400 feature an HDMI port (1x HDMI 2.0) for connecting to external monitors.

Below, you'll find a comparison table detailing different HDMI versions, including their bandwidth, color depth, maximum resolution, and release dates. This information can be helpful in understanding the capabilities of each HDMI version and choosing the most suitable one for your needs.

HDMI Comparison Table
HDMI Version Maximum Resolution Bandwidth
(Gbps)
Color Depth
(bits)
Release
Date
HDMI 2.1-2.1b 7680 x 4320 (8K) @ 60p
3840 x 2160 (4K) @ 120p
48.0 48 2017
HDMI 2.0-2.0b 3840 x 2160 (4K) @ 60p 18.0 48 2013
HDMI 1.4-1.4b 3840 x 2160 (4K) @ 30p 10.2 48 2009
HDMI 1.3-1.3a 2560 x 1440 @ 60p 10.2 48 2006
HDMI 1.0-1.2a 1920 x 1200 @ 60p 4.95 24 2002
* Please note that the provided resolution values represent the maximum supported resolution, and actual display quality may depend on other factors such as source content and connected devices.

SD Card Reader
Both ThinkPad L15 Gen 2 Intel and ExpertBook B1 B1400 come with an SD Card Reader for easy access to memory cards.

Audio Jack
Both ThinkPad L15 Gen 2 Intel and ExpertBook B1 B1400 are equipped with a 3.5mm Audio Jack, providing seamless connection to headphones and speakers.

To summarize the connectivity and ports details, please refer to the table below to see them listed.

Connectivity and Ports
WiFi Standard
(latest: v7)
v6 v6
Bluetooth
(latest: v6.2)
v5.2 v5
USB-A
(latest: 3.2)
2x USB 3.2 3x USB 3.2
USB Type-C
(latest: USB4 2.0)
2x USB 3.2 1x USB 3.2
Thunderbolt
(latest: 5)
Thunderbolt 4 Thunderbolt 4
HDMI
(latest: 2.1)
1x HDMI 2.0 1x HDMI 2.0
Display Port
(latest: v2.0)
No No
VGA No Yes
Fingerprint Sensor Optional Yes
Optical Drive No Yes
Audio Jack 3.5mm Yes Yes
Ethernet RJ45 Yes Yes
SD CardReader Yes Yes
Proprietary Charging Port No Yes

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Here are the four most popular comparisons of the Lenovo ThinkPad L15 Gen 2 Intel amongst Laptop Decision readers.

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Popular Comparisons of ASUS ExpertBook B1 B1400

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