ZyXEL Communications NSA221 Quick Start Manual page 12

2. Use the included power
supply and power cord to
connect the POWER socket
on the rear of the NSA to a
power outlet.
Use ONLY the included power
adapter.
3. Press the power button on the front of the NSA to
turn it on. Look at the front panel lights.

If no lights turn on, make sure the power cord is
not loose and that the power source is turned on.
• The power button light turns steady
blue.
• The SYS light turns steady green
after a successful startup (it takes
about 50 seconds).
• The HDD lights come on if the NSA
detects hard drives in the disk
bays.
• The rear panel LAN port has a light
that turns on if the Ethernet port is
properly connected to your network. It blinks while
sending or receiving traffic.
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