Upgrading Your Server
LED relay cable connection
To indicate the status of access to the internal hard disk drives in a disk array configuration, connect the LED relay cable connected on the mother board connector to the HDD LED connector on the mother board and to the HDD LED connector of the disk array controller.
NOTES:
When using
The LED relay cable is free from polarities. An end of the cable can be connected to either of the HDD LED connectors.
Pin (red)