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

Onboard Devices

SA TCSS USB Configuration

SA TCSS USB Configuration firmware setup page decoded from AMI HII/IFR resources.

Form ID
0x2792
Records
8
Path
Setup / Chipset / System Agent (SA) Configuration / TCSS setup menu / SA TCSS USB Configuration

Record 2140

USB CONNECT OVERRIDE

Firmware Value

Option will allow VCCSTTPC to turn off even when there is a connection for a USB3 port.

Opcode
OneOf
Question ID
0x7ba
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0xc3
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard default
1EnabledStandard defaultManufacturing default

Record 2141

TCSS xDCI Support

Firmware Value

Enable/Disable TCSS xDCI

Opcode
OneOf
Question ID
0x7bb
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0xbf
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Record 2142

TCSS CPU USB PDO Programming

Firmware Value

Select 'Enabled' if Port Disable Override functionality is used.

Opcode
OneOf
Question ID
0x7bc
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0x3e9
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Record 2143

TCSS CPU USB Port Disable Override

Firmware Value

Selectively Enable/Disable the corresponding USB port from reporting a Device Connection to the controller.

Opcode
OneOf
Question ID
0x7bd
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0x3ea
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disable Link
1Select Per-Pin

Default store records

Store IDStore labelValueOption label
0Standard0Disable Link

Visibility / conditions

  • {"condition_id": 1007, "type": "SuppressIf", "offset": 412708, "expr": ["EqIdVal QuestionId: 0x7BC, Value: 0x0"]}

Record 2144

TCSS CPU USB SS Physical Connector #0

Firmware Value

Enable/Disable this USB Physical Connector (physical port).

Firmware help text

Enable/Disable this USB Physical Connector (physical port). Once disabled, any USB devices plug into the connector will not be detected by BIOS or OS.

Opcode
OneOf
Question ID
0x7be
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0x3eb
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1007, "type": "SuppressIf", "offset": 412708, "expr": ["EqIdVal QuestionId: 0x7BC, Value: 0x0"]}
  • {"condition_id": 1008, "type": "SuppressIf", "offset": 412764, "expr": ["EqIdVal QuestionId: 0x7BD, Value: 0x0"]}
  • {"condition_id": 1009, "type": "SuppressIf", "offset": 412772, "expr": ["EqIdVal QuestionId: 0x11E8, Value: 0x0"]}

Record 2145

TCSS CPU USB SS Physical Connector #1

Firmware Value

Enable/Disable this USB Physical Connector (physical port).

Firmware help text

Enable/Disable this USB Physical Connector (physical port). Once disabled, any USB devices plug into the connector will not be detected by BIOS or OS.

Opcode
OneOf
Question ID
0x7bf
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0x3ec
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1007, "type": "SuppressIf", "offset": 412708, "expr": ["EqIdVal QuestionId: 0x7BC, Value: 0x0"]}
  • {"condition_id": 1008, "type": "SuppressIf", "offset": 412764, "expr": ["EqIdVal QuestionId: 0x7BD, Value: 0x0"]}
  • {"condition_id": 1010, "type": "SuppressIf", "offset": 412815, "expr": ["EqIdVal QuestionId: 0x11E7, Value: 0x0"]}

Record 2146

TCSS CPU USB SS Physical Connector #2

Firmware Value

Enable/Disable this USB Physical Connector (physical port).

Firmware help text

Enable/Disable this USB Physical Connector (physical port). Once disabled, any USB devices plug into the connector will not be detected by BIOS or OS.

Opcode
OneOf
Question ID
0x7c0
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0x3ed
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1007, "type": "SuppressIf", "offset": 412708, "expr": ["EqIdVal QuestionId: 0x7BC, Value: 0x0"]}
  • {"condition_id": 1008, "type": "SuppressIf", "offset": 412764, "expr": ["EqIdVal QuestionId: 0x7BD, Value: 0x0"]}
  • {"condition_id": 1011, "type": "SuppressIf", "offset": 412858, "expr": ["EqIdVal QuestionId: 0x11E6, Value: 0x0"]}

Record 2147

TCSS CPU USB SS Physical Connector #3

Firmware Value

Enable/Disable this USB Physical Connector (physical port).

Firmware help text

Enable/Disable this USB Physical Connector (physical port). Once disabled, any USB devices plug into the connector will not be detected by BIOS or OS.

Opcode
OneOf
Question ID
0x7c1
VarStore
SaSetup
VarStore GUID
72C5E28C-7783-43A1-8767-FAD73FCCAFA4
Offset
0x3ee
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1007, "type": "SuppressIf", "offset": 412708, "expr": ["EqIdVal QuestionId: 0x7BC, Value: 0x0"]}
  • {"condition_id": 1008, "type": "SuppressIf", "offset": 412764, "expr": ["EqIdVal QuestionId: 0x7BD, Value: 0x0"]}
  • {"condition_id": 1012, "type": "SuppressIf", "offset": 412901, "expr": ["EqIdVal QuestionId: 0x11E5, Value: 0x0"]}