Hello, friend.
You can query the serial number (SN) of a wireless router in the following ways:
Method 1: Query the serial number of the device through the nameplate at the bottom of the device.
Method 2: Use the gift box to query the serial number of the device.
Method 3: Connect your phone or computer to the WLAN of the wireless router, enter 192.168. 8.1 in the address box of your browser, and enter the login password to access the device management page. Choose Settings > System > Device Information to view device information.