MANUAL | QUICK START GUIDE

EX400U

USB4 EXTERNAL SSD

EX400U

PACKAGE CONTENTS


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  1. EX400U
  2. USB Type-C connector
  3. USB-Type C to USB Type-C cable (40Gb, 60W)

CONNECTING AND DISCONNECTING THE EX400U


Use the included USB-C to USB-C cable to connect to USB-C or Thunderbolt 4 and 5 hosts. This connection type is required to achieve the optimum performance.


LED STATUS LIGHT


LED blinks for 3s Drive is being initialized for use
LED off Device idle or disconnected
LED blinking Data read or write operation

GETTING THE EX400U READY FOR USE


The drive ships ready to use formatted with exFAT, a partition format that works on a variety of operating systems. Should you want to format the drive in another format, please use standard tools from your disk management or utility suite.


USING THE EX400U WITH iPhone


The drive can be attached to the back of your iPhone using MagSafe.

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OPTIMIZING PERFORMANCE


The drive will perform at its highest speeds when connected to a USB4 (40Gb) port. It is compatible with Thunderbolt 4 and 5, USB 3.2, 3.0 and 2.0, but may not reach its maximum performance due to the lower bandwidth provided by these ports.

On Windows systems, the following drive policies will ensure optimal performance. These settings are available by right clicking Properties for the storage drive in Windows Device Manager.

  1. Enable performance optimized mode
  2. Enable drive write caching
policy

INSTALLING THE SSD TOOLBOX


Please download the CORSAIR SSD Toolbox 2.0 or later to obtain extended drive information and check for Firmware updates.

Not all functions of the SSD toolbox are available for External Storage. CORSAIR SSD Toolbox is available for Windows systems.

Download link: www.corsair.com/downloads


WARRANTY YEAR


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LEGAL STATEMENT


© 2025 CORSAIR MEMORY, Inc. All rights reserved. CORSAIR and the sails logo are registered trademarks of CORSAIR in the United States and/or other countries. All other trademarks are the property of their respective owners. Product may vary slightly from those pictured.

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