Best if you are looking for a command to automate this process.
If your NAS is powered on and connected to a monitor (HDMI), or you are accessing it via a web browser: qnap serial number
SSH access must be enabled in the Control Panel under Telnet/SSH . Best if you are looking for a command
To ensure smooth support and management of your QNAP device: open the Control Panel
Log in to QTS , open the Control Panel , and navigate to System Settings > System Status > System Information .
The most direct method is to look at the physical sticker attached to your NAS chassis.