Lexar D40E 128GB Dual USB 3.2 Gen 1 Type-C Jump Drive
- USB Flash Drive
- 128 GB
- USB
- 1
- More reviewed than 58%
A convenient dual-connector drive for cross-device transfers, worth owning even though its real-world speed can run below the rated peak.
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How it ranks among the 19 usb flash drives we track
4.3★ across 10,517 Amazon ratings, Bayesian-smoothed toward the category average.
10,517 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
10,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 19 usb flash drives we track - how the scorecard works · full usb flash drives data report. Confidence: medium - useful but incomplete evidence.Updated 8 days ago. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A 128GB flash drive with both USB-C and USB-A connectors on a swiveling metal body, rated up to 100MB/s, with optional 256-bit AES encryption software for private files.
Buyers reached for this mainly to bridge older USB-A laptops with newer USB-C phones and tablets in one drive. One benchmark-focused reviewer measured real write speeds well under the rated 100MB/s peak, a useful reminder that the advertised figure is a ceiling rather than a typical result.
- Dual USB-C and USB-A connectors
- Rated up to 100MB/s
- Durable metal enclosure
- 256-bit AES encryption option
Who it's for
Suits anyone regularly moving files between a phone, tablet and a mix of USB-C and USB-A computers without carrying adapters. Less suited to buyers who need guaranteed near-100MB/s speeds for large transfers.
What buyers say
From Amazon customer reviews.
Buyers consistently liked the dual USB-C/USB-A design for moving files between phones, tablets and computers without adapters, and several called the metal build reassuringly sturdy. One benchmark-minded reviewer measured real write speeds well below the rated 100MB/s peak, and another pointed out the swivel design leaves one connector exposed with no cap to protect it.
Strengths and trade-offs
Drawn from this product's published specifications.
- Works across phone, tablet and computer without adapters
- Compact metal body that feels durable
- Swivel design avoids a cap that can be lost
- Optional 256-bit AES encryption for private files
- No cover, so one connector is always exposed
- Measured write speeds ran below the rated 100MB/s in one benchmark
Performance notes
The body swivels to expose either the USB-A or USB-C end, so there is no cap to lose track of. One reviewer's file-write benchmark averaged well under the rated 100MB/s peak, with speeds falling further on some file sizes. The bundled security software adds 256-bit AES encryption for anyone storing sensitive files.
Specifications
| Brand | Lexar |
|---|---|
| Model | D40E |
| Dimensions & fit | |
| Item Weight | 0.9 ounces |
| Item Dimensions D x W x H | 0.5 × 2.8 × 0.5 inches |
| Capacity & performance | |
| Memory Storage Capacity | 128 GB |
| Read Speed | 100 megabytes_per_second |
| Write Speed | 80 |
| Construction & materials | |
| Color | Champagne Silver |
| Compatibility & installation | |
| Compatible Devices | Laptop, Mac, PC, Smartphone, Tablet |
| Connectivity Technology | USB |
| Hardware Connectivity Technology | USB Type C |
| Hardware Interface | USB 3.2 Gen 1 |
| Compatible Phone Models | USB Type-C smartphones |
| Included components | |
| Unit Count | 1 |
| Number of Packs | 1 |
| Warranty & support | |
| Warranty Description | 3 years |
| Other details | |
| Flash Memory Type | USB |
| Number of Items | 1 |
| Item Type Name | USB Flash Drive |
| Additional Features | Dual USB Connectors |
| Mfr Part Number | LJDD40E128G-BNSNG |
| Item Highlight | USB-C Flash, Metal Housing, Swivel Design, Thumb Drive |
Other Lexar usb flash drives
How it compares
This product against the closest alternatives we track in usb flash drives.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Lexar D40E 128GB Dual USB 3.2 Gen 1 Type-C Jump DriveThis product | 4.3 / 5 | 10,517 | 4.3 / 5 |
| PNY 128GB Turbo Attaché 3 USB 3.0 Flash Drive 2-PackPNY | 4.6 / 5 | 4,675 | 4.7 / 5 |
| Samsung Type-C USB Flash Drive 256GBSamsung | 4.5 / 5 | 17,700 | 4.7 / 5 |
| SanDisk 64GB Ultra Dual Drive Go USB Type-C Flash DriveSanDisk | 4.6 / 5 | 15,000 | 4.6 / 5 |
| USB Flash Drive 32GBMaspen | 4.5 / 5 | 4,670 | 4.6 / 5 |
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Questions about the Lexar D40E
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the Lexar D40E work without installing extra software?
Yes, it works plug and play for file transfer; the encryption software is only needed if you want AES protection.
Is the Lexar D40E's 100MB/s speed guaranteed?
That figure is a rated peak; one buyer's own benchmark measured real write speeds well under it.
Does the D40E come with a cap to cover the connectors?
No, the swivel design leaves one connector exposed at a time rather than using a removable cap.