DL manuals D-Link Switch 809TC - Hub - EN User Manual D-Link 809TC - Hub - EN User Manual - Power. Manual is about: User Guide 1234567891011121314151617181920212223242526272829303132333435363738 Page of 38 Go Download Print this page Bookmark us 14 Installation Diagnostic LEDs & Troubleshooting ♦ Power. ◊ ON: “power good”. ◊ OFF: “power bad.” Check to see if the AC power adapter is properly connected, or if the correct AC power adapter is being used. DE-809TP « ‹ Prev23242526272829Next › »