ZyXEL Communications SBG5500-A User Manual page 19

Chapter 1 Introducing the SBG
To set the device back to the factory default settings, press the RESET button for five seconds or until the
2
POWER LED begins to blink and then release it. When the POWER LED begins to blink, the defaults have
been restored and the device restarts.
SBG5500 Series User's Guide
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