HP Proliant ML350 Generation 3 - Page 69

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:
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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
HP ProLiant ML350 Generation 3 Server Maintenance and Service Guide 4-7