USB4 is gaining ground as an equally fast alternative to the expensive Thunderbolt, especially in notebooks. However, the range of USB4 SSDs is still quite limited. Corsair joins the ranks with the compact EX400U, the first SSD with the U21 controller from Phison. This converts the USB4 signals directly for the flash devices; the usual intermediate PCIe step is omitted...
Corsair EX400U
4 TBMemory Size
Product details
Blazing-fast speeds offer data rates of up to 4,000 MB/s for sequential read and up to 3,600 MB/s for sequential write.
Compatible with USB Type-C hosts, connect via USB Type-C and Thunderbolt 4 and newer for comprehensive compatibility.
The compact design allows you to take the EX400U with you for powerful storage on the go.
The high-speed interface ensures broad compatibility and enhanced functionality.
Easy to set up with any device, ready to use instantly with a single connection for power and data to PC or Mac.
Interface | USB 4, USB-C |
Read transfer speed | 4000 MB/s |
Write transfer speed | 3600 MB/s |
Item number | 53638607 |
Manufacturer | Corsair |
Category | External SSD |
Manufacturer no. | CSSD-EX400U4TB |
Release date | 16.12.2024 |
Colour | Grey |
Exact colour description | Gun metal |
Storage capacity | 4 TB |
Interface | USB 4, USB-C |
Read transfer speed | 4000 MB/s |
Write transfer speed | 3600 MB/s |
Country of origin | USA |
CO₂-Emission | |
Climate contribution |
Scope of delivery | 1 piece, USB-C to USB-C cable |
Length | 6.43 cm |
Width | 6.40 cm |
Height | 1.19 cm |
Weight | 92 g |
Length | 13.50 cm |
Width | 11 cm |
Height | 2.80 cm |
Weight | 102 g |
Product Safety |
30-day right of return
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Reviews & Ratings
Statutory warranty score
How often does a product of this brand in the «External SSD» category have a defect within the first 24 months?
Source: Galaxus- 3.Transcend0,4 %
- 3.WD0,4 %
- 6.Corsair0,5 %
- 6.SanDisk0,5 %
- 8.Lexar0,6 %
Statutory warranty case duration
How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?
Source: Galaxus- CorsairNot enough data
- 1.Adata0 days
- 1.Intenso0 days
- 1.Transcend0 days
- 4.Crucial2 days
Return rate
How often is a product of this brand in the «External SSD» category returned?
Source: Galaxus- 5.WD0,9 %
- 7.SanDisk1 %
- 8.Corsair1,1 %
- 8.Kingston1,1 %
- 10.Crucial1,2 %
- High data transfer rate
- Compact dimensions
- Magsafe ring for iPhone
- Rugged cable
- Plastic housing
With the EX400U, Corsair has fulfilled the desire of many media professionals for a compact and powerful external SSD. It combines a small housing with USB4 speed. And in view of the attractive price, the plastic housing is a good thing.