OWC Express 2TB
Score: 79/100
Corsair EX400U 2TB
Score: 84/100Rankings
The Corsair EX400U 2TB delivers blazing USB4 performance up to 4,000 MB/s read and includes MagSafe compatibility in a tiny 64 mm square case. It lacks an IP rating and rugged drop protection, and carries a premium price. Perfect for professionals needing near-internal speeds on modern USB4 devices.
The OWC Express 1M2 offers up to 3836 MB/s USB4 performance in a rugged aluminum enclosure with a patented heatsink and upgradeable M.2 SSDs. Its larger size and potential heat under sustained loads are drawbacks. It targets pros who need fast, future-proof portable storage.
| Attribute | | |
|---|---|---|
2,000 GBbest | 2,000 GBbest | |
3,836 MB/s | 4,000 MB/sbest | |
— | 3,600 MB/sbest | |
| ↓ lower better | 253 g | 92 gbest |
2 years | 3 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
General(2) | ||
Warranty (years) | 2 years | 3 years |
Operating Temperature (°C) | 5-35 °C | 0-70 °C |
Connectivity(2) | ||
Interface | USB4 | USB4 Type‑C |
OS Compatibility | macOS, Windows, iPadOS, iOS, ChromeOS, Linux, Android | Windows, macOS, iOS/iPadOS |
Build & Design(3) | ||
Weight (g) | 253 g | 92 g |
Dimensions (L×W×H) (mm) | 5.1 x 2.7 x 0.9 inches mm | 64.3×64×12 mm mm |
Enclosure Material | Aluminum | Aluminum top, plastic sides and bottom |
Accessories(1) | ||
Included Accessories | 12" USB4 cable, Screwdriver, User guide | 30 cm USB‑C to USB‑C cable (40 Gbps, 60 W PD), 7 cm USB‑C cable with 90° connector |
Performance(1) | ||
Sequential Read Speed (MB/s) | 3836 MB/s | 4000 MB/s |
Products in the top-left offer the best value (high score, low price).
Professional reviewers praise the Express 1M2 for its blistering USB4 speeds, robust aluminum heatsink that prevents throttling, and the flexibility of a user-replaceable SSD. They position it as a high-performance tool for DITs and video editors needing fast off-loads, while noting the trade-off of increased size and heat under sustained load.
Early consumer feedback is limited but generally positive, highlighting the fast transfer rates, lightweight empty chassis, and easy plug-and-play use. Common concerns revolve around heat generation, the need to reformat for Windows, and the lack of extensive user reviews due to its recent launch.
Professional reviewers praise the EX400U for its tiny footprint, blazing USB4 performance, and hassle-free plug-and-play experience. The inclusion of a full-length 40 Gbps cable and the ability to operate without a separate power brick were highlighted as strong points, while the drive's speed is consistently described as comparable to internal SSDs.
“"incredible"”
“"maximum offload speeds faster than Thunderbolt"”
“"compact, low-weight portability (~150g empty)"”
