# Setting the Device ID and Serial Number

The device ID helps to keep track of a device, if multiple ones are connected to the same controller.

1. In the I/O Hub Settings home menu, select the IP address of the required device in the IP address column. The I/O Hub Web Interface opens.

2. In the Device section, enter a number between 101- 99999 in the Device ID field.

3. In the Device section, enter the serial number of the device in the Serial No. field.

4. Select Apply to save settings.