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

PCIe and Graphics

PCI Express Root Port 7

PCI Express Root Port 7 firmware setup page decoded from AMI HII/IFR resources.

Form ID
0x1039
Records
34
Path
Setup / Chipset / PCH-IO Configuration / PCI Express Configuration / PCI Express Root Port 7

Record 3480

PCI Express Root Port 7

Firmware Value

Control the PCI Express Root Port.

Opcode
OneOf
Question ID
0xcc9
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x105
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Record 3481

Connection Type

Firmware Value

Built-In: a built-in device is connected to this rootport.

Firmware help text

Built-In: a built-in device is connected to this rootport. SlotImplemented bit will be clear. Slot: this rootport connects to user-accessible slot. SlotImplemented bit will be set.

Opcode
OneOf
Question ID
0xcca
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x36d
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Built-in
1SlotStandard default

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}
  • {"condition_id": 1544, "type": "GrayOutIf", "offset": 482917, "expr": ["EqIdVal QuestionId: 0xCD7, Value: 0x1"]}

Record 3482

ASPM

Firmware Value

Set the ASPM Level: Force L0s - Force all links to L0s State AUTO - BIOS auto configure DISABLE - Disables ASPM

Firmware help text

Set the ASPM Level: Force L0s - Force all links to L0s State AUTO - BIOS auto configure DISABLE - Disables ASPM

Opcode
OneOf
Question ID
0x15e6
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x121
Width
1 byte(s)
Range
0 to 4 step 0
ValueLabelMarkers
0DisabledStandard default
2L1
4Auto

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3483

L1 Substates

Firmware Value

PCI Express L1 Substates settings.

Opcode
OneOf
Question ID
0x1602
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x2c5
Width
1 byte(s)
Range
0 to 2 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1L1.1
2L1.1 & L1.2

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3484

L1 Low

Firmware Value

PCI Express L1 Low Substate Enable/Disable.

Opcode
OneOf
Question ID
0xccb
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x2e1
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3485

ACS

Firmware Value

Enable/Disable Access Control Services Extended Capability

Opcode
OneOf
Question ID
0xccc
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x2fd
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3486

PTM

Firmware Value

Enable/Disable Precision Time Measurement

Opcode
OneOf
Question ID
0x161e
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x319
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3487

DPC

Firmware Value

Enable/Disable Downstream Port Containment

Opcode
OneOf
Question ID
0xccd
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x335
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3488

EDPC

Firmware Value

Enable/Disable Rootport extensions for Downstream Port Containment

Opcode
OneOf
Question ID
0xcce
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x351
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3489

URR

Firmware Value

PCI Express Unsupported Request Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xccf
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x13d
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3490

FER

Firmware Value

PCI Express Device Fatal Error Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xcd0
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x159
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3491

NFER

Firmware Value

PCI Express Device Non-Fatal Error Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xcd1
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x175
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3492

CER

Firmware Value

PCI Express Device Correctable Error Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xcd2
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x191
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3493

SEFE

Firmware Value

Root PCI Express System Error on Fatal Error Enable/Disable.

Opcode
OneOf
Question ID
0xcd3
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x1e5
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3494

SENFE

Firmware Value

Root PCI Express System Error on Non-Fatal Error Enable/Disable.

Opcode
OneOf
Question ID
0xcd4
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x201
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3495

SECE

Firmware Value

Root PCI Express System Error on Correctable Error Enable/Disable.

Opcode
OneOf
Question ID
0xcd5
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x21d
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3496

PME SCI

Firmware Value

PCI Express PME SCI Enable/Disable.

Opcode
OneOf
Question ID
0xcd6
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x239
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3497

Hot Plug

Firmware Value

PCI Express Hot Plug Enable/Disable.

Opcode
OneOf
Question ID
0xcd7
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x255
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}
  • {"condition_id": 1545, "type": "GrayOutIf", "offset": 483469, "expr": ["EqIdVal QuestionId: 0xCCA, Value: 0x0"]}

Record 3498

Advanced Error Reporting

Firmware Value

Advanced Error Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xcd8
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x271
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3499

PCIe Speed

Firmware Value

Configure PCIe Speed

Opcode
OneOf
Question ID
0xcd9
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x28d
Width
1 byte(s)
Range
0 to 3 step 0
ValueLabelMarkers
0AutoStandard default
1Gen1
2Gen2
3Gen3

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3500

Transmitter Half Swing

Firmware Value

Transmitter Half Swing Enable/Disable.

Opcode
OneOf
Question ID
0xcda
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x2a9
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3501

Detect Timeout

Firmware Value

The number of milliseconds reference code will wait for link to exit Detect state for enabled ports before assuming there is no device and potentially disabling the port.

Opcode
Numeric
Question ID
0xcdb
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x38f
Width
2 byte(s)
Range
0 to 65535 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3502

Extra Bus Reserved

Firmware Value

Extra Bus Reserved (0-7) for bridges behind this Root Bridge.

Opcode
Numeric
Question ID
0xcdc
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x525
Width
1 byte(s)
Range
0 to 7 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3503

Reserved Memory

Firmware Value

Reserved Memory for this Root Bridge (1-20) MB

Opcode
Numeric
Question ID
0xcdd
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x547
Width
2 byte(s)
Range
1 to 20 step 1

Default store records

Store IDStore labelValueOption label
0Standard10

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3504

Reserved I/O

Firmware Value

Reserved I/O (4K/8K/12K/16K/20K) Range for this Root Bridge.

Opcode
Numeric
Question ID
0xcde
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x579
Width
1 byte(s)
Range
4 to 20 step 4

Default store records

Store IDStore labelValueOption label
0Standard4

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3505

LTR

Firmware Value

PCH PCIE Latency Reporting Enable/Disable

Opcode
OneOf
Question ID
0xcdf
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x3e9
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3506

Snoop Latency Override

Firmware Value

Snoop Latency Override for PCH PCIE.

Firmware help text

Snoop Latency Override for PCH PCIE. Disabled: Disable override. Manual: Manually enter override values. Auto (default): Maintain default BIOS flow.

Opcode
OneOf
Question ID
0xce0
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x421
Width
1 byte(s)
Range
0 to 2 step 0
ValueLabelMarkers
0Disabled
1Manual
2AutoStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}
  • {"condition_id": 1546, "type": "SuppressIf", "offset": 483784, "expr": ["EqIdVal QuestionId: 0xCDF, Value: 0x0"]}

Record 3507

Snoop Latency Value

Firmware Value

LTR Snoop Latency value of PCH PCIE

Opcode
Numeric
Question ID
0xce1
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x497
Width
2 byte(s)
Range
0 to 1023 step 1

Default store records

Store IDStore labelValueOption label
0Standard60

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}
  • {"condition_id": 1546, "type": "SuppressIf", "offset": 483784, "expr": ["EqIdVal QuestionId: 0xCDF, Value: 0x0"]}
  • {"condition_id": 1547, "type": "SuppressIf", "offset": 483832, "expr": ["EqIdVal QuestionId: 0xCE0, Value: 0x1", "Not"]}

Record 3508

Snoop Latency Multiplier

Firmware Value

LTR Snoop Latency Multiplier of PCH PCIE

Opcode
OneOf
Question ID
0xce2
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x43d
Width
1 byte(s)
Range
0 to 5 step 0
ValueLabelMarkers
01 ns
132 ns
21024 nsStandard defaultManufacturing default
332768 ns
41048576 ns
533554432 ns

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}
  • {"condition_id": 1546, "type": "SuppressIf", "offset": 483784, "expr": ["EqIdVal QuestionId: 0xCDF, Value: 0x0"]}
  • {"condition_id": 1547, "type": "SuppressIf", "offset": 483832, "expr": ["EqIdVal QuestionId: 0xCE0, Value: 0x1", "Not"]}

Record 3509

Non Snoop Latency Override

Firmware Value

Non Snoop Latency Override for PCH PCIE.

Firmware help text

Non Snoop Latency Override for PCH PCIE. Disabled: Disable override. Manual: Manually enter override values. Auto (default): Maintain default BIOS flow.

Opcode
OneOf
Question ID
0xce3
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x459
Width
1 byte(s)
Range
0 to 2 step 0
ValueLabelMarkers
0Disabled
1Manual
2AutoStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}
  • {"condition_id": 1546, "type": "SuppressIf", "offset": 483784, "expr": ["EqIdVal QuestionId: 0xCDF, Value: 0x0"]}

Record 3510

Non Snoop Latency Value

Firmware Value

LTR Non Snoop Latency value of PCH PCIE

Opcode
Numeric
Question ID
0xce4
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x4cf
Width
2 byte(s)
Range
0 to 1023 step 1

Default store records

Store IDStore labelValueOption label
0Standard60

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}
  • {"condition_id": 1546, "type": "SuppressIf", "offset": 483784, "expr": ["EqIdVal QuestionId: 0xCDF, Value: 0x0"]}
  • {"condition_id": 1548, "type": "SuppressIf", "offset": 483976, "expr": ["EqIdVal QuestionId: 0xCE3, Value: 0x1", "Not"]}

Record 3511

Non Snoop Latency Multiplier

Firmware Value

LTR Non Snoop Latency Multiplier of PCH PCIE

Opcode
OneOf
Question ID
0xce5
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x475
Width
1 byte(s)
Range
0 to 5 step 0
ValueLabelMarkers
01 ns
132 ns
21024 nsStandard defaultManufacturing default
332768 ns
41048576 ns
533554432 ns

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}
  • {"condition_id": 1546, "type": "SuppressIf", "offset": 483784, "expr": ["EqIdVal QuestionId: 0xCDF, Value: 0x0"]}
  • {"condition_id": 1548, "type": "SuppressIf", "offset": 483976, "expr": ["EqIdVal QuestionId: 0xCE3, Value: 0x1", "Not"]}

Record 3512

LTR Lock

Firmware Value

PCIE LTR Configuration Lock

Opcode
OneOf
Question ID
0xce6
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x405
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}

Record 3513

Peer Memory Write Enable

Firmware Value

Peer Memory Write Enable/Disable

Opcode
OneOf
Question ID
0xce7
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0xc4
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1543, "type": "SuppressIf", "offset": 482909, "expr": ["EqIdVal QuestionId: 0xCC9, Value: 0x0"]}