Check The Leds - ZyXEL Communications P-2812HNU-51c Quick Start Manual

1. Do one of the following for your Internet connection:
a. DSL: Use a telephone wire to connect this port to a telephone jack
(or the DSL or MODEM jack on a splitter, if you have one). Make
sure the DSL/WAN switch is set to the DSL side.
b. WAN: If you have a DSL router or modem already in your network
or you want to use a cable modem or optical network terminal/unit
(ONT/ONU), push the DSL/WAN switch to the WAN side and use
an Ethernet cable to connect this port to an Ethernet jack with
Internet access.
2. ETHERNET: Use an Ethernet cable to connect a computer to one of
these ports for initial configuration and/or Internet access.
3. USB 2.0: Connect a USB (version 2.0 or lower) memory stick or a
USB hard drive for file sharing, or connect a 3G wireless card for
accessing the Internet through a 3G network. You can also use a
USB cable (not provided) to connect a USB printer (version 2.0 or
lower) to this port. The P-2812HNU-51c automatically detects the
USB device. Use a USB extension cable if the stick is too big to fit.
4. PHONE: Use a telephone cable (and any telephone adaptor provided
with your P-2812HNU-51c) to connect a telephone to the PHONE 1
or PHONE 2 port. If you only have one telephone, you should use
port 1.
5. Use the power adaptor provided with your P-2812HNU-51c to
connect an appropriate power source to this socket.
6. Push the power button to the on position.

Check the LEDs

Look at the LEDs (lights) on the rear panel of the P-2812HNU-51c.
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