Corsair EX400U 2TB USB4 Portable External Type-C SSD
Up to 4,000MB/s Read, 3,600MB/s Write, USB 3.2 Gen2 2x2, Plug and Play, Thunderbolt 4, MagSafe, Includes…
Price as of 2026-07-29. Check Amazon for the current price.
Quick Decision
Is This Right For You?
- •USB4-equipped Mac and Windows users who need the fastest sustained transfers
- •IPhone 15/16 Pro creators offloading Apple ProRes 4K/60 video via MagSafe
- •Anyone who wants the editorial top pick from Wirecutter's 2026 update
- •And creators willing to trade 5-year coverage for USB4 leadership
- •3-year warranty trails the 5-year coverage offered by Crucial, Lexar, Samsung T9, and SanDisk
- •No IP-rated rugged shell
- •USB4 ports are still rare outside M4-era Macs and 2025-plus Windows ultrabooks
- •Samsung T7 Shield 1TB — budget alternative at $287 (Score A)
- •Sandisk 2TB Extreme Portable SSD — higher rated at 4.6/5 ($298)
📝 Based on our editorial review.
Mubboo Score: C
How we calculate the Mubboo Score
Quality (45%): customer rating, normalized to a 10-point scale
Popularity (35%): review volume vs the category leader, log-scaled
Value (20%): price position vs other Portable SSDs
Computed from live Amazon rating, review count, and price across 6 Portable SSDs available to US consumers · last refreshed 2026-07-29.
How It Compares
This Product Corsair EX400U 2TB USB4 Portable External Type-C SSD | Most Popular Sandisk 2TB Extreme Portable SSD | Best Rated Samsung T7 Shield 1TB | Best Value Crucial X10 2TB Portable SSD | |
|---|---|---|---|---|
| Price | $529.99 | $298.44 | $286.88 | $294.98 |
| Rating | 4.2/5 | 4.6/5 | 4.7/5 | 4.5/5 |
| Reviews | 830 | 90,240 | 16,277 | 2,179 |
| Mubboo Score | C | A- | A | B |
Quick Specs
- Color
- Gray
- Read Speed
- 4000 Megabytes Per Second
- Unit Count
- 1.0 Count
- Form Factor
- Compact
- Item Weight
- 0.2 Pounds
- Media Speed
- 3600 Megabytes Per Second
- Manufacturer
- Corsair
- Model Number
- CSSD-EX400U2TB
Pros & Cons
- •USB4 at 4,000 MB/s read — measurably faster than every USB 3.2 Gen 2x2 drive on the same laptop per Wirecutter test bench; the only mainstream portable that hits this tier in 2026.
- •27 g compact body sits flush against an iPhone or laptop without a dangling cable — the form factor Wirecutter explicitly cited when promoting it over the Samsung T9 at 4TB.
- •MagSafe-compatible works with Wirecutter's recommended grip case for iPhone 15 Pro / 16 Pro Apple ProRes 4K/60 video offload — the iPhone-Pro creator default in 2026.
- •Backward compatible to USB 3.2 Gen 2 — still delivers ~1,050 MB/s on older Macs and pre-2024 laptops, so it does not become a paperweight when you change hosts.
- •3-year warranty trails the 5-year coverage offered by Crucial, Lexar, Samsung T9, and SanDisk — Wirecutter explicitly flags this in their flaws-but-not-dealbreakers section.
- •No IP-rated rugged shell — if you drop it in a puddle or pack it in a dusty camera bag, the rugged Samsung T7 Shield or Crucial X10 is the cross-shop.
- •USB4 ports are still rare outside M4-era Macs and 2025-plus Windows ultrabooks — older laptops cap it at USB 3.2 Gen 2 speeds, no faster than the SanDisk Extreme at half the price.
What buyers say about Portable SSDs
Themes from buyer reviews across this category — not review data for this specific model.
For frequent large transfers, prioritize SSDs over HDDs for speed and durability. Check cable length and consider reformatting to GPT/NTFS if using with Windows for optimal performance.
- Fast transfer speeds
- Compact and portable
- Rugged and durable
- Plug-and-play simplicity
- Long-term reliability
- Can get warm during extended use
- Short included cable
- Fragility or failure in budget HDD models
Key Features
- ✦External SSD with USB4 Connection: Leverage the incredibly high bandwidth of USB4 to move large files for tasks like video and photo editing in seconds.
- ✦Lightning-Fast Speeds: Delivers data speeds of up to 4,000MB/sec sequential read and up to 3,600MB/sec sequential write.
- ✦Compatible with USB Type-C: Connect via USB Type-C, Thunderbolt 4 and higher for wide compatibility*. *Performance varies by capacity. Maximum performance requires USB4 or higher c…
- ✦Compact Form Factor: Small form factor allows you to take the EX400U with you for high-performance storage on the go.
- ✦Simple Plug-and-Play Setup: Easy to use right out of the box with a single connection for power and data on PC or Mac.
Source: product listing on Amazon.
If not the EX400U 2TB USB4 Portable External Type-C SSD, consider these
Featured in Our Reviews
Bottom Line
Corsair EX400U 2TB USB4 Portable External Type-C SSD earns Mubboo Score C. Priced at $530 — a premium option, above the category average of $331. Rated 4.2/5 from 830+ reviews. Strong buy if: usb4-equipped mac and windows users who need the fastest sustained transfers, iphone 15/16 pro creators offloading apple prores 4k/60 video via magsafe. Skip if: 3-year warranty trails the 5-year coverage offered by crucial, lexar, samsung t9, and sandisk — Sandisk 2TB Extreme Portable SSD (Score A-, $298) may fit better.
Frequently Asked Questions
Is the Corsair EX400U 2TB USB4 Portable External Type-C SSD worth buying in 2026?
It earns a Mubboo Score of C, with a 4.2/5 rating from 830 reviews — better than 17% of Portable SSDs we track.
How much does the Corsair EX400U 2TB USB4 Portable External Type-C SSD cost?
It is currently $529.99 — premium-tier pricing for Portable SSDs.
How does the EX400U 2TB USB4 Portable External Type-C SSD compare to other Portable SSDs?
The category's most-reviewed alternative is the Sandisk 2TB Extreme Portable SSD (4.6/5, 90,240 reviews, $298.44). The EX400U 2TB USB4 Portable External Type-C SSD carries a Mubboo Score of C vs A-.
Sources & References
- View on Amazon →
- Expert review review →
- Expert review review →
- Expert review review →
- Browse all Portable SSDs on Mubboo →
Products available through US retailers. Prices in USD. Sales tax varies by state and is not included.
Mubboo may earn a commission on purchases made through affiliate links. This does not affect our Mubboo Score, product rankings, or editorial judgments. Prices are accurate as of the last sync (2026-07-29) and may change.