Supermicro H8DGG-QF User Manual page 64

H8DGG-QF SERVERBOARD USER'S MANUAL
Unit ID Clumping
Use this setting to confi gure Unit ID clumping. Options include Disabled, Auto,
UnitID 2/3, UnitID B/C and UnitID 2/3 & B/C.
HT Link Tristate
This setting allwos you to confi gure the HT Link Tristate. Options include
Auto, Disabled, CAD/CTL and CAD/CTL/CLK.
NB Deemphesis Level
Use this to set the NB deemphesis level. Options include Disabled, 0.4 dB,
1.32 dB, -2.08dB, 3.1 dB, 4.22 dB, 5.50 dB and 7.05 dB.
IOMMU
This setting is used to Disable or Enable IOMMU.
Primary Video Controller
Use this setting to specify the primary video controller boot order. Options include
PCIE-GPP1-GPP2-GPP3a-PCI, PCIE-GPP2-GPP1-GPP3a-PCI, PCIE-GPP3a-
GPP1-GPP2-PCI or PCI-PCIE-GPP1-GPP2-GPP3a.
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USB Confi guration
This submenu displays the Module Version and lists the USB devices that are
enabled as well as the following options.
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. "Auto" disabled Legacy support
if no USB devices are connected. The options are Disabled, Enabled and Auto.
USB 2.0 Controller Mode
Use this setting to confi gure the USB 2.0 Controller in either Hi-Speed (480 Mps)
or Full Speed (12 Mps) mode.
BIOS EHCI Hand Off
This is a workaround for OS's without EHCI hand-off support. The EHCI
ownership change should be claimed by the EHCI driver. Options are Enabled
or Disabled.
Legacy USB 1.1 HC Support
This option Enables or Disables support for legacy USB 1.1 HC.
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