transition to USB 3.0 speeds. This mode is compatible with operating systems that do not support USB 3.0
while allowing USB 3.0 devices to operate at USB 3.0 speeds with state-of-the-art operating systems.
•
Enabled
—If Enabled, USB 3.0 capable devices operate at USB 3.0 speeds at all times (including the
preboot environment) when in UEFI Boot Mode. Do not use this mode with operating systems that do not
support USB 3.0.
•
Disabled
—If configured for Disabled, USB 3.0 capable devices function at USB 2.0 speeds at all times.
The pre-OS behavior and default operation of the USB ports is configurable in the UEFI System Utilities. For
more information, see the UEFI System Utilities user guide for your product on the
.
External USB functionality
Hewlett Packard Enterprise provides external USB support to enable local connection of USB devices for
server administration, configuration, and diagnostic procedures.
For additional security, external USB functionality can be disabled through USB options in UEFI System
Utilities.
Automatic Server Recovery
ASR is a feature that causes the system to restart when a catastrophic operating system error occurs, such
as a blue screen, ABEND, or panic. A system fail-safe timer, the ASR timer, starts when the System
Management driver, also known as the Health Driver, is loaded. When the operating system is functioning
properly, the system periodically resets the timer. However, when the operating system fails, the timer expires
and restarts the server.
ASR increases server availability by restarting the server within a specified time after a system hang. You can
disable ASR from the System Management Homepage or through UEFI System Utilities.
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External USB functionality
