Draytek Vigor2820 Series User Manual page 12

Interface
Factory Reset
LAN (1-4)
DSL
WAN 2
USB
PWR
ON/OFF
4
Description
Restore the default settings. Usage: Turn on the router (ACT LED is
blinking). Press the hole and keep for more than 5 seconds. When you see
the ACT LED begins to blink rapidly than usual, release the button. Then the
router will restart with the factory default configuration.
Connecters for local networked devices.
Connecter for accessing the Internet through ADSL2/2+.
Connecter for remote networked devices.
Connecter for a USB device (for 3G USB Modem or printer).
Connecter for a power adapter.
Power Switch.
Vigor2820 Series User's Guide