Service Manual

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NOTE: PXE is required only if you are booting to an
operating system located on another computer. If a
boot routine is not available from the remote system,
the computer attempts to boot from the next device
listed in the boot sequence.
Integrated Audio
(On default)
Enables or disables the onboard audio controller.
l Off — Integrated audio is disabled.
l On — Integrated audio is enabled.
USB Controller
(On default)
Enables or disables the internal USB controller.
l Off — The USB controller is disabled.
l On — The USB controller is enabled.
l No Boot — The USB controller is enabled;
however, the BIOS will not recognize USB
storage devices.
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NOTE: Operating systems with USB support will
recognize USB storage devices regardless of the No
Boot setting.
1394 Controller
(On default)
Enables or disables the integrated IEEE 1394
controller.
l Off — The 1394 controller is disabled.
l On — The 1394 controller is enabled.
Serial Port #1
(Auto default)
Disables or selects the address for the integrated
serial port and determines how the serial port
operates.
l Off — The serial port is disabled.
l Auto — The BIOS selects between COM1 and
COM3; if both resources are in use the port is
disabled.
l COM1 — The port is configured at 3F8h with
IRQ 4.
l COM3 — The port is configured at 3E8h with
IRQ 4.
PS/2 Mouse Port
(On default)
Enables or disables the onboard PS/2-compatible
mouse controller.
l Off — The PS/2 legacy mouse port is disabled.
l On — The PS/2 legacy mouse port is enabled.
LED color
Adjusts the color of the front and back LEDs (see
About Your XPS Computer).
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Performance
Hyper-Threading
(On default)
Specifies whether each physical processor appears
as one or two logical processors.
l Off — Hyper-Threading technology is disabled.
l On — Hyper-Threading technology is enabled.
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NOTE: If your processor does not supports Hyper-
Threading, this option does not appear in the
Options List.
Multiple CPU Core
(On default)
Specifies whether the processor has more than one
core enabled.
l Off — Multiple CPU core technology is
disabled.
l On — Multiple CPU core technology is enabled.
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NOTE: The performance of some applications may
improve with an additional core enabled.
CPU Clock Speed
Provides limited capability to adjust the CPU clock
speed so that the CPU operates at a different
frequency than that designated in the manufacturer's
design specifications.
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