The highlighted component on the Cisco I/O module is the chassisconnections LED, which indicates the status of connectivity between the I/O module and the chassis.
In the exhibit, the orange arrow points to asmall rectangular LED indicatorlocated to the left side of the I/O module (Cisco UCS-IOM-2304). This specific LED isnot aligned with the ports, fans, or screws, which helps identify it correctly.
Chassis connections LED (B)is responsible for indicating thestatus of uplink/downlink communicationbetween the I/O module and the chassis.
Greenusually indicates a healthy link.
Amberoroffmay indicate a problem or no connection.
Why the other answers are incorrect:
A. Captive screw→ These are at the far corners, not where the arrow points.
C. Fan module LED→ This IOM doesn’t have user-visible fan LEDs atthe front face.
D. Fixed port→ These are the large rectangular SFP ports clearly visible in the middle, not near the arrow.
This identification is important whentroubleshooting chassis-to-IOM connectivityor verifyingmodule status LEDsduring field maintenance.
