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EX400U SURVIVOR 1TB USB4 External SSD

Leverage the incredibly high bandwidth of USB4 to move large files in seconds, all in a small, portable device.
  • Blazing-fast USB4 up to 40Gbps
  • Up to 4,000MB/sec read, 3,600MB/sec write
  • Rugged, environmentally sealed enclosure (IP55)
  • USB4/Thunderbolt 4/iOS compatible
  • Backwards compatible with USB 3.2 Type-C
Current price: £269.99
This product qualifies for free shipping
Order today for estimated delivery by 05/28/2026-06/01/2026
60-days risk free returns

Capacity

1 TB
2 TB
4 TB
Out Of Stock

MORE TO CONSIDER

SKU: CSSD-EX400US1TB
Current price: £269.99
This product qualifies for free shipping
Order today for estimated delivery by 05/28/2026-06/01/2026
60-days risk free returns

EX400U SURVIVOR

RUGGED USB4 EXTERNAL SSD

CORSAIR EX400U Survivor SSD connected via USB cable to a laptop on a rocky surface, surrounded by outdoor gear.

UNBELIEVABLE USB4 SPEED ON THE GO

With transfer speeds rivaling internal drives – up to 40Gbps via USB4 – the EX400U SURVIVOR handles massive video files, game libraries, and creative workloads with ease.
CORSAIR EX400U Survivor portable SSD on a workshop bench with hand tools and a laptop in the background.

HEAVY-DUTY HOUSING

A heavy-duty housing stands up to the rigors of daily use, with IP55 protection to keep your data safe from the elements.
CORSAIR EX400U Survivor portable SSD connected to a laptop on a dark desk with purple RGB lighting and headphones nearby.

WIDE-RANGING COMPATIBILITY

The EX400U SURVIVOR achieves maximum performance on laptop and desktop hosts with USB4/Thunderbolt 4 ports, with additional support for iOS/iPadOS 13 and later devices with USB Type-C ports and backward compatibility with USB Type-C 3.2.*
*Performance varies by capacity. Maximum performance requires USB4 or higher connection.
CORSAIR EX400U Survivor portable SSD connected to a laptop via USB on a wooden desk, alongside a camera and color swatches.

PLUG-AND-PLAY SIMPLICITY

One USB Type-C cable handles both power and data – no additional drivers, no setup, just powerful storage right out of the box.
CORSAIR EX400U Survivor portable SSD clipped to a backpack strap on a park bench alongside a DSLR camera, illustrating on-the-go storage reliability.

RELIABLE PERFORMANCE ON THE GO

Stay productive anywhere — the EX400U SURVIVOR draws power directly through USB-C, so you get uncompromising performance without carrying extra adapters.
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FIVE-YEAR WARRANTY
WORLD-CLASS SUPPORT
Our award-winning service means you can enjoy your gear worry-free.

Tech Specs

Heatsink ColorBLACK/GREY
Storage Temperature-40°C to +85°C
SSD Max Sequential Read ATTOUp to 4000MB/s
Storage Humidity93% RH (40° C)
SSD Package ContentsEX400U Survivor External SSD, USB-C to USB-C cable (30cm, 40Gb)
SSD CompatibilityUSB Type-C connector, Windows 10, 11, MacOS 13 and later, iOS/iPadOS 13 and later
Vibration20 Hz~80 Hz/1.52 mm, 80 Hz~2000 Hz/20G
SSD Shock1,500 G
SSD Operating Temperature0°C to +70°C
SSD Smart SupportNo
SSD Max Sequential Write CDMup to 3500MB/s
SSD Max Sequential Read CDMUp to 4000MB/s
SSD Sequential Read WriteUp to 4000MB/s read / 3500MB/s write (USB4 40Gb)
SSD Max Sequential Write ATTOup to 3500MB/s
USB CompatibilitySupport for Microsoft Windows® 10 and later, Mac OS® 13 and later, iOS/iPadOS 13 and later, and Linux with no driver or software installation necessary  |  USB Type-C Port required
Capacity1TB
Unformatted Capacity1TB
USB Package ContentsEX400U SURVIVOR External SSD, USB-C to USB-C cable (30cm, 40Gb, 60W Power Delivery capable), Velcro Strap with clip
Operating Temperature0°C to 70°C
InterfaceUSB4
Sequential Read WriteUp to 4000MB/s read / 3500MB/s write (USB4 40Gb)
Max Sequential Read ATTOUp to 4000MB/s
Max Sequential Read CDMUp to 4000MB/s
Max Sequential Write CDMup to 3500MB/s
Max Sequential Write ATTOup to 3500MB/s
Weight0.149kg
  • Capacity: 1 GB is 1 Billion Bytes. Some of the listed capacity on a flash storage device is used for formatting and thus not available for data storage. The actual available capacity for data storage is less than the capacity stated on the products.
  • Performance: Performance rating based on internal testing at CORSAIR at the time of launch. Performance depends on the host platform, usage, and other variables.
  • Endurance: Endurance rating based on JEDEC JESD218 standard client workload. Individual drive endurance and health status depends on actual usage and may be less than rated endurance.
EX400U Survivor External SSD, USB-C to USB-C cable (30cm, 40Gb)