This section explains the LEDs on Supermicro 1114S nodes.

Front Panel LEDs and Buttons

On the front, right side of your node, there are five LEDs.

Label Color and Behavior Description
Info 🔴 (solid red) Node overheated
Info 🔴 (1 s. blinking red) Fan failed
Info 🔴 (4 s. blinking red) Power Supply Unit (PSU) failed
Info 🔵 (solid blue) Unit Identification (UID) activated locally
Info 🔵 (blinking blue) UID activated from IPMI
Lan A Off Unused
Lan B Off Unused
Disk Activity 🟡 (solid yellow) On or blinking
Power 🟢 (solid green) On


On the back of your node, LAN LEDs are located behind the vent holes on the NIC. Each port has one light.

Color Status Description
Off No link
🟢 (solid green) On or blinking Link established