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Lexar D40E — Review & Specs | Pricepect | Pricepect

Home USB Flash DrivesLexar D40E

Lexar D40E — image 1

Lexar

Lexar D40E

Expert Review Analysis

The Lexar JumpDrive Dual Drive D40E is a compact metal flash drive featuring a 360° swivel design with dual USB‑A and USB‑C connectors. It offers up to 256 GB of storage, 100 MB/s advertised read speed, and 256‑bit AES encryption, targeting casual cross‑device file transfers.

✓ Best for: Casual users such as students, travelers, and hobby photographers who need an affordable, portable 256 GB drive for backing up photos, videos, and documents and value easy USB‑A/C cross‑device transfers.✗ Not ideal for: Power users, video editors, or professionals requiring high sustained write performance or faster read speeds for large data migrations, as well as users needing flawless compatibility with all Android smartphones.

Pros

✓Dual USB‑Type‑A and USB‑Type‑C connectors enable seamless transfers between modern and legacy devices
✓Metal zinc‑alloy housing with 360° swivel design provides durable, portable build resistant to daily wear
✓

Price History

Current

$42.99

Average

$27.88

Lowest

$21.24

Highest

$42.99

Price trend (90d):+59.3%

Best Seller Rank History

Now#11Best#2Worst#1,705 +788

Lower = better sales rank

Rating Trend

Rating4.5/ 5Reviews7,251+7,170 reviews

Specifications

Connectivity

USB Type-AYes

USB Type-CYes

USB InterfaceUSB 3.2 Gen 1 (5 Gbit/s)

OTG SupportYes

Design

Height1 mm mm

Width17 mm mm

Length70 mm mm

Weight26 g g

MaterialMetal (zinc alloy)

Features

Encryption256-bit AES bit

Capless DesignYes

Plug-and-PlayYes

General

BrandLexar

ManufacturerLexar Co., LTD.

ModelD40E

ColorChampagne Silver

Warranty3-year limited

Performance

Advertised Read SpeedUp to 100 MB/s MB/s

Sequential Read Speed183 MB/s MB/s

Sequential Write Speed45.8 MB/s MB/s

4K Read Speed8.5 MB/s MB/s

4K Write Speed1.3 MB/s MB/s

Storage

Capacity256 GB GB

Security

Encryption256-bit AES encryption via software

Warranty

Limited Warranty3-year limited warranty

Dimensions & Weight

Height0.0393700787 inches

Width0.6692913379 inches

Depth2.755905509 inches

Research Sources

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User Reviews

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4.5

(7,225 reviews)

$42.99

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D40EChampagne Silver256GB Backed by a Lexar 3-year limited warranty.

USB Flash Drives

256 GB capacity can store roughly 64,000 12 MP photos or over 4,000 minutes of 1080p video, suitable for casual media backup

✓Plug‑and‑play compatibility with smartphones, tablets, laptops and PCs without needing additional software

✓Built‑in 256‑bit AES encryption offers hardware‑level data security for sensitive files

Cons

✗Sequential write speed drops to around 46 MB/s and 4 KB random writes are as low as ~1.3 MB/s, limiting performance for large file transfers
✗Advertised read speed of 100 MB/s is lower than tested sequential reads (183 MB/s) and far behind premium competitors, reducing overall speed advantage
✗Some mobile compatibility issues reported, especially with certain Android devices, affecting reliable OTG operation
✗Sustained performance degrades after cache fills in long benchmark tests, leading to slower write throughput
✗Lack of software utilities for backup management may require third‑party tools for advanced features

From Expert Reviews

Praised by Experts

✓Reviewers highlight the compact dual‑connector design and sturdy metal swivel housing as ideal for everyday cross‑device transfers
✓Professional tests note solid sequential read performance (~183 MB/s) exceeding the advertised spec, making it reliable for quick photo/video access
✓Inclusion of 256‑bit AES encryption is praised for adding security without extra software

Criticized by Experts

✗Professionals point out weak sustained write speeds (~45 MB/s sequential, ~1.3 MB/s 4 KB) unsuitable for heavy data‑intensive tasks
✗Reviewers mention that the 100 MB/s read ceiling is modest compared to faster rivals like the D50E (400 MB/s)
✗Some editors note occasional mobile compatibility hiccups, limiting seamless OTG use on certain phones

From User Reviews

Users Love

✓Everyday users appreciate the easy plug‑and‑play transfers between phones and laptops without installing software
✓Users like the durable metal build and swivel design that fits on keychains and withstands daily wear
✓Consumers value the large 256 GB storage for backing up photos and videos while traveling

Users Complain About

✗Users report that actual write speeds feel slower than expected, especially for large video files
✗Some customers experience compatibility problems with specific Android smartphones, causing transfer errors
✗Users note that the advertised speed claims can be misleading compared to real‑world performance

Expert Opinion

Professional reviewers commend the D40E’s sturdy metal swivel housing and dual‑connector flexibility, noting its solid sequential read performance that exceeds the modest advertised spec. However, they criticize its weak sustained write speeds and modest 100 MB/s read ceiling, especially when compared to faster rivals like the Lexar D50E.

What Users Say

Everyday users generally praise the drive’s plug‑and‑play convenience, durable metal construction, and ample 256 GB capacity for travel and photo backups. Recurring complaints focus on slower-than‑expected write speeds and occasional compatibility hiccups with certain Android devices.

Common Complaints

Slow sustained write speeds, mobile compatibility issues on some Android phones, and perceived gap between advertised and real‑world performance.

How It Compares

vs. Lexar D50E

Advantages

✓Much higher read speed (up to 400 MB/s) and write speed (up to 360 MB/s) for demanding tasks
✓Larger capacity options up to 1 TB for extensive storage needs
✓Improved iPhone support and dedicated backup app

Disadvantages

✗Higher price than the D40E, making it less attractive for budget‑focused buyers
✗Similar weight and metal build, so no size advantage over D40E

Choose the D40E for affordable, everyday cross‑device transfers; opt for the D50E when speed and larger capacity are critical.