The G-CONNECT by default has the Wi-Fi enabled with the Ethernet port connection as 10/100. To enable the Gigabit Ethernet port, you will need to turn off the Wi-Fi on your device.
To disable Wi-Fi, press and hold the Wi-Fi button on the G-CONNECT for 1-2 seconds. The Wi-Fi indicator will turn off. To enable Wi-Fi, press the Wi-Fi button. The Wi-Fi will turn on and the indicator will light up.