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Corsair EX400U

2 TB
Price in EUR including VAT
EUR121,74/1TB
Delivered the day after tomorrow
More than 10 pieces in stock
free shipping

Memory Size3

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 higher for full 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.

Key specifications

Memory type (NAND)
TLC
USB ports
Thunderbolt 4USB-C
Write transfer speed
3600 MB/s
Read transfer speed
4000 MB/s
Item number
53638608

General information

Manufacturer
Corsair
Category
External SSD
Manufacturer no.
CSSD-EX400U2TB
Release date
16.12.2024
Sales rank in Category External SSD
22 of 642

Colour

Colour
BlackGrey
Exact colour description
BlackGreyGreyGunmetal

Data storage properties

Storage capacity
2 TB
USB ports
Thunderbolt 4USB-C
Interface
PCIe
Read transfer speed
4000 MB/s
Write transfer speed
3600 MB/s
Memory type (NAND)
TLC

Origin

Country of origin
ChinaTaiwanUSA

Sustainability

Manufacturer commitment
SBTi

Voluntary climate contribution

CO₂-Emission
Climate contribution

Scope of delivery

Scope of delivery
USB-C to USB-C cable (30 cm, 40 Gb, 60W Power Delivery capable)

Product dimensions

Length
6.43 cm
Width
6.40 cm
Height
1.20 cm
Weight
92 g

Legal Notice

Product Safety

Package dimensions

Length
13.80 cm
Width
11.70 cm
Height
3 cm
Weight
103 g

14-day cancellation right
30-day right of return
24 Months statutory warranty
2 additional offers
Report concern

Compare products

Goes with

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
  • 13.Crucial
    1,3 %
  • 13.OWC
    1,3 %
  • 16.Silicon Power
    1,5 %
  • 17.Corsair
    1,7 %
  • 18.SanDisk Professional
    2,1 %

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
  • 2.Crucial
    2 days
  • 3.Adata
    3 days
  • 3.Corsair
    3 days
  • 3.Samsung
    3 days
  • 6.SANDISK
    4 days

Return rate

How often is a product of this brand in the «External SSD» category returned?

Source: Galaxus
  • 13.LaCie
    2,2 %
  • 14.Lexar
    2,7 %
  • 15.Corsair
    4,9 %
  • 15.OWC
    4,9 %
  • 17.SanDisk Professional
    6,2 %
Source: Galaxus

Translation: machine translated
Overall ratingVery good90/100
Without ratingNo rating
CT Magazin Logo
CT MagazinSingle testReleaseJuly 2025

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...

Very good90/100
Macwelt spezialSingle testReleaseApril 2025
  • PositiveHigh data transfer rate
  • PositiveCompact dimensions
  • PositiveMagsafe ring for iPhone
  • PositiveRugged cable
  • NegativePlastic 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.