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All CalDigit Thunderbolt 3 devices, such as TS3 Plus, TS3, TS3 Lite, T4 Thunderbolt 3 RAID are backward compatible with legacy Thunderbolt 1 and 2 computers. To do so, you will need to use a Thunderbolt 2 cord and an Apple Thunderbolt 3 to Thunderbolt 2 adapter. Please note that this adapter will also enable your legacy Thunderbolt 1 and 2 computers to make use of many functions that Thunderbolt 3 has to offer including a dual extended monitor setup if it is supported by the computer's GPU, but the laptop charging feature is not implemented in the legacy Thunderbolt computers.

If you are unable to see your T4 in the RAID Utility, this software may have been automatically blocked by your operating system. Since macOS 10.13, Apple requires all users to allow any third party software that is installed.

While installing, you can ensure that this software is allowed from the onset. As this software installs on your computer, you may receive an alert message that reads ‘System Extension Blocked’. This will give you a prompt to either ignore or review this extension. Reviewing this extension will bring you to the general tab of the Security and Privacy pane of system preferences. Please check the bottom of this window and allow any driver produced by CalDigit and allow it. From here, your software should install properly.

If you have already installed this software, you can still accept this software up to a half hour after the initial download by navigating to your system preferences application and then to the Security and Privacy pane. If you have passed this 30-minute window, please reinstall this software to prompt this message again.

Product Overview

  • Technical Specifications
  • macOS Drivers
  • macOS Icons
  • User Manual
  • Serial Number
  • Data Sheets


2x Thunderbolt 3 Ports
1x DisplayPort port 

Power Supply Adapter

AC Input : 100-240V ~2.0A, 50-60Hz
DC Output: 19.5V, 11.8A (230W)

Dimension and Weight

Height: 5.8 inches (148 mm)
Width: 5.3 inches (135 mm)
Depth: 9.5 inches (242 mm)
Weight: 13lb (5.90kg)(HDDx4)

System Requirements
Mac OS X 10.12 or later


Operating Temperature:5°C ~ 55°C (41°F ~ 131°F)
Storage Temperature:-40°C ~ 70°C (-40°F ~ 158°F)

In the Box

1 x CalDigit T4
4 x Drive Modules
2 x Drive Module Keys
1 x AC Adapter (PSU)
1 x AC Power Cord
1 x Thunderbolt 3 Cable (1.0m, 3.28 ft)
CalDigit Drive Utility software (Preloaded)


macOS Drivers:

macOS RAID Utility 
*Last updated on 10/31/19. Compatible with macOS Catalina 10.15.

macOS Icons:

Icons Package

T4 RAID Thunderbolt 3 Manuals:


The serial number for this product is located on the bottom.

T4 Thunderbolt 3 Data Sheets:


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