Lexar Dual Drive D70E review

Connectivity

The D70E is useful when files regularly cross between machines with different ports. USB-A remains available without finding an adapter, while a compatible USB-C host can use the faster mode. A USB-C connector or Thunderbolt label alone does not establish support for 20 Gb/s USB 3.2 Gen 2×2.

The physical arrangement also deserves attention. A drive plugged directly into the device needs clearance around the port and any phone case. For a device that moves during use, consider whether a short cabled drive would be easier to position without putting strain on the socket.

Performance

Capacity changes the stated USB-C writing limit: the 512GB version is slower on paper than the 1TB and 2TB versions. All three share a separate USB-A maximum of 1,000 MB/s reads and 900 MB/s writes. Those differences should inform the choice if large transfers are the main reason for buying.

Computer Bild reported about 2,119 MB/s reads and 1,892 MB/s writes from its 2TB sample. The article does not provide the host and detailed transfer workload needed to extend those numbers to another setup. These are reported results for that 2TB sample, not a claim about the 512GB version or an uninterrupted full-drive write. ¹

Design

Computer Bild’s inspection describes covers that slide out and fold back to expose the plugs. Keeping them attached avoids the loose-cap problem, although it adds a mechanism that needs room to open. ¹

The metal body and carrying loop suit everyday transport. The documentation used here does not establish an ingress-protection rating, so the covers should be treated as connector protection rather than evidence of waterproof storage. A five-year limited warranty does not remove the need to keep another copy of important files.

Software & Compatibility

Lexar offers app-based photo and video backup alongside ordinary file storage. The practical benefit is a local copy that can move to another device. Confirm the copy before deleting originals, especially when using the drive as a handoff between a phone and computer.

General storage compatibility does not certify a specific camera-recording workflow. The manufacturer’s peak write rate is only one requirement; recording-device approval, format and sustained behavior still matter. The D70E’s clearest role is transferring and carrying files.

Alternatives

The Kingston Dual Portable SSD offers the same basic USB-A/USB-C convenience with a 10 Gb/s interface. It is worth comparing when a faster Gen 2×2 computer connection is not part of the plan.

The Samsung T7 Shield uses a cable and has an IP65 rating. It suits buyers who would prefer documented environmental protection and more freedom to position the drive.

Verdict

Choose the D70E for convenient transfers across both connector types, particularly when a compatible Gen 2×2 host can use the USB-C side. The 1TB and 2TB models offer the higher published write ceiling. If every intended host runs at 10 Gb/s or less, that speed advantage becomes much less persuasive.