Mellanox Technologies TX6000 Hardware User Manual page 40

Interfaces
In InfiniBand system mode, the LED indicator, corresponding to each data port, will light orange
when the physical connection is established (that is, when the unit is powered on and a cable is
plugged into the port with the other end of the connector plugged into a functioning port). When
a logical connection is made the LED will change to green. When data is being transferred the
light will blink green.
35 Mellanox Technologies