Connectors, Switches, and LEDs

LEDs

Several status LEDs and buttons are located on the front and back of the server. Problem diagnosis is aided by the LEDs that indicate the status of the components and operations of the server. LEDs are also located on the system board. The following server LEDs and buttons are explained in this section

Power button

System status LEDs (on the front of the server)

Power On/Standby and AC power status

Network Interface Controller (NIC) activity

External health

Internal health

Unit Identification

Unit Identification (UID) button

System board LEDs

Processor failure

Processor Power Module (PPM) failure

Memory failure

Thermal failure

Fan failure

Hot-plug hard drive LEDs

Network Interface Controller LEDs (on the back of the server)

Network activity status

Network link

Connection speed

Compaq ProLiant ML350 Generation 3 Server Maintenance and Service Guide

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Compaq ML350 manual LEDs