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External SSDs

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Corsair EX400U 1TB vs Corsair EX400U USB4

Compare Corsair EX400U 1TB and Corsair EX400U USB4 side by side. Both are 1TB USB4 external SSDs, but they differ in speed, design, and value. Here's how they stack up.

Corsair

Corsair EX400U 1TB
9.0/10

A 1TB USB4 portable — 3300 MB/s read on a Thunderbolt 4 / USB4 host. The EX400U is the rare USB4 drive that supports the full 40Gbps link (not all USB4 drives do). 5-year warranty is best-in-class for the speed tier.

USB4 3300 MB/s read
5-year warranty
Full 40Gbps USB4 link
Check on Amazon →
Our Pick

Corsair

Corsair EX400U USB4
9.2/10

High-bandwidth USB4 external SSD delivering up to 4,000MB/s reads with MagSafe compatibility. Perfect for creative professionals with Thunderbolt 4 and USB4 laptops.

Blazing 4000MB/s read speeds over USB4
MagSafe magnetic attachment for iPhone
Full Thunderbolt 4 backward compatibility
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Spec Comparison

Spec
Corsair EX400U 1TB
Corsair EX400U USB4
Read Speed
3.3 GB/s
4.0 GB/s ✓
Write Speed
3.0 GB/s
3.6 GB/s ✓
Capacity
1 TB
1 TB ✓
Interface
USB4
USB4
Endurance (TBW)
600 TB
700 TB ✓
Warranty
5 Years
5 Years
Score
9.0/10
9.2/10 ✓
Total Wins
0 wins
5 wins

Frequently Asked Questions

Which is better, Corsair EX400U 1TB or Corsair EX400U USB4?
The Corsair EX400U USB4 scores 9.2/10 compared to 9.0/10 for the Corsair EX400U 1TB. Our expert analysis favors the Corsair EX400U USB4 for its superior speed.
What's the difference between Corsair EX400U 1TB and Corsair EX400U USB4?
The key differences: The Corsair EX400U 1TB offers 3,300 MB/s reads vs 4,000 MB/s for the Corsair EX400U USB4. Capacity options differ: Corsair EX400U 1TB is 1TB while Corsair EX400U USB4 is 1TB. The Corsair EX400U 1TB uses USB4 while the Corsair EX400U USB4 uses USB4.
Which is faster, Corsair EX400U 1TB or Corsair EX400U USB4?
The Corsair EX400U USB4 is faster with 4,000 MB/s read speeds compared to 3,300 MB/s for the Corsair EX400U 1TB. That's a 21% speed advantage.
Which has better value, Corsair EX400U 1TB or Corsair EX400U USB4?
The Corsair EX400U USB4 scores higher (9.2 vs 9.0/10), indicating better overall value in our evaluation. Check both models on the retailer's site for the latest details.

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