A hard reset technically returns Connect to its factory settings by putting it back into setup mode. To perform a hard reset on your Connect, leave the device plugged in and hold the reset button down for 5 seconds, then let go. You should see a pulsating green light, which indicates that the device is back in set up mode. If you want to set up your Connect again, follow these set up instructions.
If the Connect flashes green rapidly, the reset failed and the Connect is attempting to reconnect to the last Wi-Fi setup. Try the reboot steps a second time and hold the button down for 7 seconds.