Power Button/Power Led; Video Connector (Rack Systems); Usb Connectors; Table 6. Power Button Behavior Under Acpi/Non-Acpi Operating Systems - Dell POWEREDGE R510 Technical Manualbook

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4.3.3 Power Button/Power LED

The power button controls the system's power, turning the unit on and off. All PowerEdge servers have the
power LED light-pipe integrated in the power button. The LED is a green standard Power icon.
The Power LED has two states:
•
Power LED is OFF: System is not operating, regardless of AC present. (Other AUX powered
subsystems may be operational with AC power present.)
•
Power LED is ON (Green): System is operating. One or more of the non-standby (Vaux) power rails are
active.
All PowerEdge servers include a green colored LED on the motherboard to indicate the presence of standby
power (Vaux). This LED is in a visible location for service personnel. Some server operating systems allow
users to configure the function of the power button through the ACPI feature.
The system has the capability to remember the state of the Power button prior to AC loss (option selected
through BIOS setup). If this option is enabled via BIOS setup, system power returns to the state prior to AC
loss with the resumption of AC.
If the power button is disabled through system management mechanisms, the user can shut down the system
during a crash (regardless of the Power button enable/disable settings).
Table 6.
Action
Press and release
power button
Hold power button for
6 seconds

4.3.4 Video Connector (Rack Systems)

The video connector is used to attach a video graphics array (VGA)-compatible monitor to rack-based
systems. Space around the connector accommodates full usage of it with all adjacent interfaces (USB
connectors, button, LED's, etc.).

4.3.5 USB Connectors

USB connectors are used to attach USB-compliant devices such as keyboards, mice, storage keys, and
peripherals to the system. All PowerEdge systems have at least 2 front-accessible USB 2.0 compliant ports
PowerEdge R510 Technical Guide
Figure 6. Power Button/LED Implementation
Power Button Behavior under ACPI/Non-ACPI Operating Systems
ACPI OS w/ACPI Enabled
System Turned ON
System performs a graceful
shutdown
System turns off
Non-ACPI OS or ACPI OS
w/ ACPI Disabled
System Turned ON
System turns off
System turns off
ACPI or Non-ACPI OS
System Turned OFF
Boots
System starts and shuts down 6
seconds later.
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