Supermicro SBA-7141M-T, Руководство пользователя

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5-11
Chapter 5: BIOS
SouthBridge/MCP55 Configuration
The menu options in the S
OUTH
B
RIDGE
/MCP55 C
ONFIGURATION
submenu and their
descriptions are shown in Table 5-8 .
Table 5-8. SouthBridge/MCP55 Configuration Submenu
Menu Option Description
CPU/LDT Spread
Spectrum Enables spread spectrum for the CPU/LDT. Options are Center Spread , D
OWN
S
PREAD
or D
ISABLED
.
PCIE Spread
Spectrum
Allows you to Enable or D
ISABLE
spread spectrum for PCI-Express.
SATA Spread
Spectrum
Enables spread spectrum for the SATA. Options are Enabled and D
ISABLED
.
Primary Graphics
Adapter
Options are PCI Express
J
PCI and PCI * PCI E
XPRESS
.
USB 1.1 Controller Enable or D
ISABLE
the USB 1.1 controller.
USB 2.0 Controller Enable or D
ISABLE
the USB 2.0 controller.
USB Devices
Enabled
This menu option is greyed out and cannot be configured by the user.
Legacy USB Support
Select Enabled to enable the support for USB Legacy. Disable Legacy support if
there are no USB devices installed in the system. A
UTO
disables Legacy support
if no USB devices are connected. The options are D
ISABLED
, Enabled and A
UTO
.
USB 2.0 Controller
Mode Select the controller mode for your USB ports. Options are HiSpeed and
F
ULL
S
PEED
. (HiSpeed=480 Mbps, FullSpeed=12 Mbps ) .
BIOS EHCI Hand-Off Enable or D
ISABLE
a workaround for OS's without EHCI hand-off support.
X
USB Mass Storage Device Configuration
USB Mass
Storage Reset
Delay
This sets the number or seconds POST waits for the USB mass storage device
after the S
TART
unit command. Options are 10
SEC
, 20 sec , 30
SEC AND
40
SEC
.
X
Emulation Type
Device 1 Emulation
Type
Options are Auto , F
LOPPY
, F
ORCED
FDD, H
ARD
D
ISK
and CDR
OM
. If Auto , then
USB devices less than 530 MB will be emulated as floppy and remaining as hard
drive. Forced FDD option can be used to force HDD formatted drive to boot as
an FDD (example: ZIP Drive).
Device 2 Emulation
Type