Troubleshoot various topics related to your product.
Your most common and frequently asked questions are collected here.
The Tuff is pre-formatted for MacOS and ready to use.
You will need to re-format the Tuff for Windows.
Follow the steps below to re-format your Tuff.
Re-formatting the Tuff will erase all data on the hard drive.
Back-up your files before re-formatting.
Only proceed if you have backed-up.
1. Connect the Tuff to your Windows computer with the appropriate cable.
2. Open Disk Management (Control Panel - Administrative Tools - Computer Management - Disk Management).
3. Find the Tuff that you want to format in the list of drives.
Right click on the “Disk Number” and select “Properties”.
You will see the "CalDigit Tuff Device”.
4. In Disk Management, right click on the partition that was previously formatted for Mac and select “Delete Volume…”.
5. On the pop-up window click “YES” to delete the Mac partition.
6. When the disk comes online, right click on the “Unallocated” area and select “New Simple Volume”.
7. The “New Simple Volume Wizard” pop-up window will appear.
Follow the simple on-screen instructions to finish formatting your Tuff.
8. The Tuff will mount on your Windows computer.
Windows may automatically shut down the power to USB devices where it has no activities for a few minutes. This would cause all the USB storage devices connecting to the CalDigit Dock powered down themselves. Although it can save power, It may take a longer time for the drive to spin up if you need to access it afterward.
USB 3.2 Gen 2 (10Gbps)
Toshiba PCIe NVMe PCIe SSD
Up to 1055MB/s*
Up to 900MB/s*
Size and Weight
Length: 2.99in (7.59cm)
Width: 2.14in (5.44cm)
Height: 0.57in (1.45cm)
Weight: 0.163lbs (0.074kg)
In The Box
1 x Tuff nano
1 x USB-C - USB-C Cable (0.25M)
1 x USB-C - USB-A Cable (0.25M)
1 x Carrying Case
Tuff Nano Manuals:
Tuff Nano Quick Start Guide:
*English | Français | Deutsch | Italiano | Español | Português | 日本語 | 繁體中文 | 简体中文 | 한국어 | คนไทย
The serial number for this product is located under the jacket by the port.
macOS Ventura and USB/Thunderbolt Device Security
We encourage all CalDigit users to upgrade their Macs to macOS 13 Ventura for the best possible experience. This new
How to reset NVRAM and SMC on your Mac?
The following steps show the NVRAM resetting for your Macs which includes non-Thunderbolt, and Thunderbolt 1, 2 Macs.
How to partition a Windows drive that was previously formatted in Mac?
Mac OSX may create an extra 200 MB EFI partitions at the start of a drive hence you may see this EFI partition in Windows. The Windows Disk Management tool can’t delete these EFI partitions, and you’ll see the “Delete Volume” option grayed out. This article describes how you can clean these partitions in DOS command mode and re-format your CalDigit drive.
My USB drive turns itself off when connected to the CalDigit dock under Windows environment?
The USB drive plugged into the dock shut down itself every few minutes.
CalDigit Support is ready to assist you.
For an optimal experience please have your product name, serial number, and operating system on hand prior to contacting support
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