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Chapter 61 Troubleshooting
XMG1915 Series User’s Guide
376
4 Check if you have set a pre-defined schedule to control when the Switch enables PoE to provide power
on the port in PORT > PoE Setup > PoE Time Range Setup.
5 If the connected IEEE 802.3at / IEEE 802.3af PD does not fully comply with any PoE standard, select
Legacy or Force-802.3at in PORT > PoE Setup > PoE Setup > Power-Up.
6 If the problem continues, contact Zyxel technical support.
61.5 Nebula Registration
I cannot register the Switch in Nebula because the previous owner has registered/locked it.
• To register a pre-owned Switch in Nebula, use the Nebula Mobile app to scan the Nebula QR code
on the back label of the Switch.
• To register a pre-owned Switch in Nebula locked by the previous owner, inform the previous owner to
remove the Switch from the Nebula organization or contact Zyxel technical support.
I no longer want to use Nebula to manage the Switch, what should I do?
• Remove the Switch from the Nebula organization first. See From Nebula-managed to Standalone on
page 25 for details. The Switch will reboot and restore its factory-default settings.
•Make sure the CLOUD LED is off or blinking green. See LEDs on page 47 for more information on LED
behavior. This means the Switch is operating in standalone mode. Nebula Control Center Discovery is
disabled in SYSTEM > Cloud Management > Nebula Control Center Discovery in the Web
Configurator.
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