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EX400U 4TB USB4 External SSD

Leverage the incredibly high bandwidth of USB4 to move large files in seconds, all in a small, portable device.
  • High bandwidth 40Gbps USB4 connection
  • Up to 4,000MB/sec sequential read and up to 3,600MB/sec sequential write speeds
  • Compatible with USB Type-C for PC, Mac, and iOS devices
  • High-speed NVMe interface when using USB4 or Thunderbolt
  • Connects to iPhone 15 and later models to bolster storage using MagSafe
  • Three-year limited warranty
$389.99Current price: $389.99
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SKU: CSSD-EX400U4TB

CORSAIR EX400U
USB EXTERNAL SSD

LIGHTNING-FAST PORTABLE POWER

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 HOSTS

Connect via USB Type-C and Thunderbolt 4 and later for wide compatibility.

iOS AND MAGSAFE COMPATIBLE

Supports iOS / iPadOS 13 and later devices with USB-C port and can attach to iPhones using the drive's MagSafe magnetic ring.

COMPACT FORM FACTOR

The small form factor allows you to take the EX400U with you for high-performance storage on the go.

HIGH-SPEED INTERFACE

Ensures wide-ranging compatibility and enhanced functionality*.
*Performance varies by capacity. Maximum performance requires USB4 or higher connection.

SIMPLE TO SET UP WITH ANY DEVICE

Easy to use right out of the box with a single connection for power and data on PC or Mac.

COMPREHENSIVE THREE-YEAR WARRANTY

Ensures peace of mind with industry-leading customer support.

Tech Specs

Heatsink ColorGUNMETAL
Storage Temperature-40°C to +85°C
Storage Humidity93% RH (40° C)
SSD Package ContentsEX400U 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
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
Unformatted Capacity4TB
USB Package ContentsEX400U External SSD, USB-C to USB-C cable (30cm, 40Gb, 60W Power Delivery capable), USB-C to USB-C cable (7cm, 40Gb, 90 deg connector)
Operating Temperature0°C to 70°C
InterfaceUSB4
Sequential Read WriteUp to 4000MB/s read / 3600MB/s write (USB4 40Gb)
Max Sequential Read ATTOUp to 4000MB/s
Max Sequential Read CDMUp to 4000MB/s
Max Sequential Write CDMup to 3600MB/s
Max Sequential Write ATTOup to 3600MB/s
Weight0.092kg
  • 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 External SSD, USB-C to USB-C cable (30cm, 40Gb)