ASROCK 4U8G Series User Manual page 17

Power Button
Press the power switch button to toggle the system power on and standby/sleep modes.
To remove all power from the system completely, disconnect the power cord from the
server.
UID Button
Press the ID button to toggle the front panel UID LED and the baseboard UID LED on and
off. You are able to locate the server you're working on from behind a rack of servers.
NMI (Nonmaskable Interrupt) Button
Press the NMI button with a paper clip or pin to generate a nonmaskable interrupt and to
put the server in a halt state for examination.
System Reset Button
When the system is completely unresponsive, press the system reset button to reboot the
server without shutting it off and initialize the system.
Status LED Definitions
Power LED
Status Description
Green Power on
Off Power off
UID LED
Status Description
Blue System identification is active.
Off System identification is disabled.
HDD Activity LED
Status Description
Blinking Green HDD access
Off HDD idle
System Event LED
Status Description
Off Running or normal operation
Red At least one sensor has critical alert
4U8G Series
4U10G Series
11