What color are the LEDs and what do the colors mean?
Diag (Red) The Diag LED lights up when the Router is not ready for use. It turns off when the Router is ready for use. System (Green) The System LED lights up when the Router is powered on. It flashes when the Router is running a diagnostic test. Internet (Green) The Internet LED lights up when the Router is connected to a cable or DSL modem through the Internet (WAN1) port. DMZ/Internet (Green) The DMZ/Internet LED lights up when the Router is actively connected through the DMZ/Internet (WAN2) port. DMZ Mode (Green) The DMZ Mode LED lights up when the Router is using DMZ mode. 1, 2, 3, 4 (LAN) (Green) these numbered LEDs, corresponding with the numbered ports on the Router’s back panel, serve two purposes. The LED is solidly lit when the Router is connected to a device through that port. The LED flashes to indicate network activity over that port.