i9 BIOS
Leo-Patch 1.6 · Q1HY MoDT · Observations 14 October 2026

Record 2802

TCSS xHCI Support

Firmware Value

Enable/Disable TCSS xHCI

Opcode
OneOf
Question ID
0x2774
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0xbe
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Record 2803

TCSS USB Configuration

Menu Link

SA TCSS USB Configuration settings

Opcode
Ref
Question ID
0xa50

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}

Record 2804

ITBT PCIE0 Root Port

Firmware Value

Enable/Disable ITBT PCIE ROOT

Opcode
OneOf
Question ID
0x2775
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0xba
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}
  • {"condition_id": 1218, "type": "SuppressIf", "offset": 451131, "expr": ["QuestionRef1 QuestionId: 0x11E2", "Uint8 Value: 0x1", "GreaterEqual", "Not"]}

Record 2805

ITBT PCIE1 Root Port

Firmware Value

Enable/Disable ITBT PCIE ROOT

Opcode
OneOf
Question ID
0x2776
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0xbb
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}
  • {"condition_id": 1219, "type": "SuppressIf", "offset": 451181, "expr": ["QuestionRef1 QuestionId: 0x11E2", "Uint8 Value: 0x2", "GreaterEqual", "Not"]}

Record 2806

ITBT PCIE2 Root Port

Firmware Value

Enable/Disable ITBT PCIE ROOT

Opcode
OneOf
Question ID
0x2777
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0xbc
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}
  • {"condition_id": 1220, "type": "SuppressIf", "offset": 451231, "expr": ["QuestionRef1 QuestionId: 0x11E2", "Uint8 Value: 0x3", "GreaterEqual", "Not"]}

Record 2807

ITBT PCIE3 Root Port

Firmware Value

Enable/Disable ITBT PCIE ROOT

Opcode
OneOf
Question ID
0x2778
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0xbd
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}
  • {"condition_id": 1221, "type": "SuppressIf", "offset": 451281, "expr": ["QuestionRef1 QuestionId: 0x11E2", "Uint8 Value: 0x4", "GreaterEqual", "Not"]}

Record 2808

ITBT DMA0

Firmware Value

Enable/Disable ITBT DMA0

Opcode
OneOf
Question ID
0xa51
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0xc0
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}
  • {"condition_id": 1222, "type": "SuppressIf", "offset": 451331, "expr": ["QuestionRef1 QuestionId: 0x11E2", "Uint8 Value: 0x1", "GreaterEqual", "Not"]}

Record 2809

ITBT DMA1

Firmware Value

Enable/Disable ITBT DMA1

Opcode
OneOf
Question ID
0xa52
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0xc1
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}
  • {"condition_id": 1223, "type": "SuppressIf", "offset": 451381, "expr": ["QuestionRef1 QuestionId: 0x11E2", "Uint8 Value: 0x3", "GreaterEqual", "Not"]}

Record 2810

VCCST status of IOM

Firmware Value

Enables/Disables VCCST.

Firmware help text

Enables/Disables VCCST. Enable: Sends VCCST ON message to EC or PMC Disable: Sends VCCST OFF message to EC or PMC

Opcode
OneOf
Question ID
0xa53
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0xc2
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}

Record 2811

D3 Cold Enable/Disable

Firmware Value

Enables/Disables D3 Cold.

Firmware help text

Enables/Disables D3 Cold. Enable: D3 cold support for IOM is enabled Disable: D3 cold support for IOM is Disabled

Opcode
OneOf
Question ID
0xa54
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0xc4
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}

Record 2812

D3Hot

Firmware Value

Enables/Disables D3 Hot.

Firmware help text

Enables/Disables D3 Hot. Enable: D3 Hot support for IOM is enabled Disable: D3 Hot support for IOM is Disabled

Opcode
OneOf
Question ID
0xa55
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0xc5
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}

Record 2813

Tc C-State Limit

Firmware Value

BIOS mailbox to limit deepest TCx state

Opcode
OneOf
Question ID
0xa56
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0x3e8
Width
1 byte(s)
Range
0 to 10 step 0
ValueLabelMarkers
0Disable
11
22
44
55
66
77
1010

Default store records

Store IDStore labelValueOption label
0Standard1010

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}

Record 2814

TC Cold Power Saving Factor

Firmware Value

TC Cold Power Saving Factor Switch

Opcode
OneOf
Question ID
0xa57
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0x431
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}

Record 2815

IOM before entering TC cold

Firmware Value

Represent Y in seconds for IOM before entering TC cold

Opcode
Numeric
Question ID
0xa58
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0x433
Width
1 byte(s)
Range
0 to 255 step 0

Default store records

Store IDStore labelValueOption label
0Standard10

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}
  • {"condition_id": 1224, "type": "SuppressIf", "offset": 451644, "expr": ["EqIdVal QuestionId: 0xA57, Value: 0x0"]}

Record 2816

IOM stay in TC cold

Firmware Value

Represent X in seconds for IOM stays in TC cold

Opcode
Numeric
Question ID
0xa59
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0x432
Width
1 byte(s)
Range
0 to 255 step 0

Default store records

Store IDStore labelValueOption label
0Standard50

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}
  • {"condition_id": 1224, "type": "SuppressIf", "offset": 451644, "expr": ["EqIdVal QuestionId: 0xA57, Value: 0x0"]}

Record 2817

PCI Express Root Port 0

Menu Link

PCI Express Root Port Settings.

Opcode
Ref
Question ID
0xa5a

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}
  • {"condition_id": 1225, "type": "SuppressIf", "offset": 451704, "expr": ["QuestionRef1 QuestionId: 0x11E2", "Uint8 Value: 0x1", "GreaterEqual", "Not"]}
  • {"condition_id": 1226, "type": "SuppressIf", "offset": 451719, "expr": ["EqIdVal QuestionId: 0x2775, Value: 0x0"]}

Record 2818

PCI Express Root Port 1

Menu Link

PCI Express Root Port Settings.

Opcode
Ref
Question ID
0xa5b

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}
  • {"condition_id": 1227, "type": "SuppressIf", "offset": 451746, "expr": ["QuestionRef1 QuestionId: 0x11E2", "Uint8 Value: 0x2", "GreaterEqual", "Not"]}
  • {"condition_id": 1228, "type": "SuppressIf", "offset": 451761, "expr": ["EqIdVal QuestionId: 0x2776, Value: 0x0"]}

Record 2819

PCI Express Root Port 2

Menu Link

PCI Express Root Port Settings.

Opcode
Ref
Question ID
0xa5c

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}
  • {"condition_id": 1229, "type": "SuppressIf", "offset": 451788, "expr": ["QuestionRef1 QuestionId: 0x11E2", "Uint8 Value: 0x3", "GreaterEqual", "Not"]}
  • {"condition_id": 1230, "type": "SuppressIf", "offset": 451803, "expr": ["EqIdVal QuestionId: 0x2777, Value: 0x0"]}

Record 2820

PCI Express Root Port 3

Menu Link

PCI Express Root Port Settings.

Opcode
Ref
Question ID
0xa5d

Visibility / conditions

  • {"condition_id": 1217, "type": "SuppressIf", "offset": 451108, "expr": ["EqIdVal QuestionId: 0x2774, Value: 0x0"]}
  • {"condition_id": 1231, "type": "SuppressIf", "offset": 451830, "expr": ["QuestionRef1 QuestionId: 0x11E2", "Uint8 Value: 0x4", "GreaterEqual", "Not"]}
  • {"condition_id": 1232, "type": "SuppressIf", "offset": 451845, "expr": ["EqIdVal QuestionId: 0x2778, Value: 0x0"]}