Lantronix SISTP1040-551-LRT SISTP1040-551-LRT Install Guide Rev B - Page 20

Lantronix SISTP1040-551-LRT Install Guide 4 Troubleshooting LED Status Indicators LED Name Condition/Color Meaning On Green Power is applied/supplied to Power 1. P1 Off No power is applied/supplied to Power 1 On Green Power is applied/supplied to Power 2. P2 Off No power is applied/supplied to Power 2. ALM (Alarm) On Red Off Power failure alarm occurs. No power failure alarm. 1, 2, 3, 4 Copper port Link/Act On Green Flashing Green Off Ethernet link up but no traffic is detected. Ethernet link up and there is traffic detected. Ethernet link down. 1G On Yellow Copper port Speed Off A 1000Mbps connection is detected. No link, a 10Mbps or 100 Mbps connection is detected. L/A SFP port Link/Act On Green Flashing Green Off Ethernet link up. Ethernet link up and there is traffic detected. Ethernet link down. 1G SFP port Speed On Yellow Off SFP port speed 1000 Mbps connection is detected. No link or a SFP port speed 100Mbps connection is detected. On Green PoE port is connected to PoE PD device, using the 802.3bt standard. On Amber PoE port is connected to PoE PD device, using the 802.3af/at standard. 1~5 PoE On Red No PoE power delivered due to PoE PD detection failure, short circuit, overloading, or over temperature. Off No PoE power output 33841 Rev. B https://www.lantronix.com/ Page 20 of 26