How do I set a static IP address for the Thunderbolt connection on my NAS?

Last modified date: 2025-10-14

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Overview

When a QNAP NAS connects directly to a macOS or Windows computer using a Thunderbolt cable, the connection is established through the Thunderbolt Bridge (system default) interface. By default, this interface obtains an IP address automatically.

To maintain a stable and predictable connection, especially for file sharing or data transfer, QNAP recommends assigning static IP addresses to both the NAS and the connected computer.

Procedure

To set up a static IP address for the Thunderbolt connection on your NAS, follow these steps:

Log in to the NAS device.
Open Network & Virtual Switch.
On the side panel, click Advanced.
Click Virtual Switch.
Locate the Thunderbolt Bridge (system default) interface.
Click .
Click Configure.

The Configure window appears.
Click IPv4.
Select Use static IP address.
Assign an fixed IP address (e.g., 192.168.100.1).
Select a subnet mask (e.g., 255.255.255.0).
Specify the default gateway.
Click Apply.

A static IP is now assigned to the NAS Thunderbolt interface.

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