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

PCIe and Graphics

PCI Express Root Port 11

PCI Express Root Port 11 firmware setup page decoded from AMI HII/IFR resources.

Form ID
0x13ee
Records
34
Path
Setup / Chipset / PCH-IO Configuration / PCI Express Configuration / PCI Express Root Port 11

Record 3616

PCI Express Root Port 11

Firmware Value

Control the PCI Express Root Port.

Opcode
OneOf
Question ID
0xd45
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x109
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Record 3617

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
0xd46
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x371
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Built-in
1SlotStandard default

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}
  • {"condition_id": 1568, "type": "GrayOutIf", "offset": 488081, "expr": ["EqIdVal QuestionId: 0xD53, Value: 0x1"]}

Record 3618

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
0x15ea
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x125
Width
1 byte(s)
Range
0 to 4 step 0
ValueLabelMarkers
0DisabledStandard default
2L1
4Auto

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3619

L1 Substates

Firmware Value

PCI Express L1 Substates settings.

Opcode
OneOf
Question ID
0x1606
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x2c9
Width
1 byte(s)
Range
0 to 2 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1L1.1
2L1.1 & L1.2

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3620

L1 Low

Firmware Value

PCI Express L1 Low Substate Enable/Disable.

Opcode
OneOf
Question ID
0xd47
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x2e5
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3621

ACS

Firmware Value

Enable/Disable Access Control Services Extended Capability

Opcode
OneOf
Question ID
0xd48
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x301
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3622

PTM

Firmware Value

Enable/Disable Precision Time Measurement

Opcode
OneOf
Question ID
0x1622
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x31d
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3623

DPC

Firmware Value

Enable/Disable Downstream Port Containment

Opcode
OneOf
Question ID
0xd49
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x339
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3624

EDPC

Firmware Value

Enable/Disable Rootport extensions for Downstream Port Containment

Opcode
OneOf
Question ID
0xd4a
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x355
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3625

URR

Firmware Value

PCI Express Unsupported Request Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xd4b
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x141
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3626

FER

Firmware Value

PCI Express Device Fatal Error Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xd4c
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x15d
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3627

NFER

Firmware Value

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

Opcode
OneOf
Question ID
0xd4d
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x179
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3628

CER

Firmware Value

PCI Express Device Correctable Error Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xd4e
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x195
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3629

SEFE

Firmware Value

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

Opcode
OneOf
Question ID
0xd4f
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x1e9
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3630

SENFE

Firmware Value

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

Opcode
OneOf
Question ID
0xd50
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x205
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3631

SECE

Firmware Value

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

Opcode
OneOf
Question ID
0xd51
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x221
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3632

PME SCI

Firmware Value

PCI Express PME SCI Enable/Disable.

Opcode
OneOf
Question ID
0xd52
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x23d
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3633

Hot Plug

Firmware Value

PCI Express Hot Plug Enable/Disable.

Opcode
OneOf
Question ID
0xd53
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x259
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}
  • {"condition_id": 1569, "type": "GrayOutIf", "offset": 488633, "expr": ["EqIdVal QuestionId: 0xD46, Value: 0x0"]}

Record 3634

Advanced Error Reporting

Firmware Value

Advanced Error Reporting Enable/Disable.

Opcode
OneOf
Question ID
0xd54
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x275
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3635

PCIe Speed

Firmware Value

Configure PCIe Speed

Opcode
OneOf
Question ID
0xd55
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x291
Width
1 byte(s)
Range
0 to 3 step 0
ValueLabelMarkers
0AutoStandard default
1Gen1
2Gen2
3Gen3

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3636

Transmitter Half Swing

Firmware Value

Transmitter Half Swing Enable/Disable.

Opcode
OneOf
Question ID
0xd56
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x2ad
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3637

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
0xd57
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x397
Width
2 byte(s)
Range
0 to 65535 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3638

Extra Bus Reserved

Firmware Value

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

Opcode
Numeric
Question ID
0xd58
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x529
Width
1 byte(s)
Range
0 to 7 step 1

Default store records

Store IDStore labelValueOption label
0Standard0

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3639

Reserved Memory

Firmware Value

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

Opcode
Numeric
Question ID
0xd59
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x54f
Width
2 byte(s)
Range
1 to 20 step 1

Default store records

Store IDStore labelValueOption label
0Standard10

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3640

Reserved I/O

Firmware Value

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

Opcode
Numeric
Question ID
0xd5a
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x57d
Width
1 byte(s)
Range
4 to 20 step 4

Default store records

Store IDStore labelValueOption label
0Standard4

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3641

LTR

Firmware Value

PCH PCIE Latency Reporting Enable/Disable

Opcode
OneOf
Question ID
0xd5b
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x3ed
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0Disabled
1EnabledStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3642

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
0xd5c
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x425
Width
1 byte(s)
Range
0 to 2 step 0
ValueLabelMarkers
0Disabled
1Manual
2AutoStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}
  • {"condition_id": 1570, "type": "SuppressIf", "offset": 488948, "expr": ["EqIdVal QuestionId: 0xD5B, Value: 0x0"]}

Record 3643

Snoop Latency Value

Firmware Value

LTR Snoop Latency value of PCH PCIE

Opcode
Numeric
Question ID
0xd5d
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x49f
Width
2 byte(s)
Range
0 to 1023 step 1

Default store records

Store IDStore labelValueOption label
0Standard60

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}
  • {"condition_id": 1570, "type": "SuppressIf", "offset": 488948, "expr": ["EqIdVal QuestionId: 0xD5B, Value: 0x0"]}
  • {"condition_id": 1571, "type": "SuppressIf", "offset": 488996, "expr": ["EqIdVal QuestionId: 0xD5C, Value: 0x1", "Not"]}

Record 3644

Snoop Latency Multiplier

Firmware Value

LTR Snoop Latency Multiplier of PCH PCIE

Opcode
OneOf
Question ID
0xd5e
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x441
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": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}
  • {"condition_id": 1570, "type": "SuppressIf", "offset": 488948, "expr": ["EqIdVal QuestionId: 0xD5B, Value: 0x0"]}
  • {"condition_id": 1571, "type": "SuppressIf", "offset": 488996, "expr": ["EqIdVal QuestionId: 0xD5C, Value: 0x1", "Not"]}

Record 3645

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
0xd5f
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x45d
Width
1 byte(s)
Range
0 to 2 step 0
ValueLabelMarkers
0Disabled
1Manual
2AutoStandard defaultManufacturing default

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}
  • {"condition_id": 1570, "type": "SuppressIf", "offset": 488948, "expr": ["EqIdVal QuestionId: 0xD5B, Value: 0x0"]}

Record 3646

Non Snoop Latency Value

Firmware Value

LTR Non Snoop Latency value of PCH PCIE

Opcode
Numeric
Question ID
0xd60
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x4d7
Width
2 byte(s)
Range
0 to 1023 step 1

Default store records

Store IDStore labelValueOption label
0Standard60

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}
  • {"condition_id": 1570, "type": "SuppressIf", "offset": 488948, "expr": ["EqIdVal QuestionId: 0xD5B, Value: 0x0"]}
  • {"condition_id": 1572, "type": "SuppressIf", "offset": 489140, "expr": ["EqIdVal QuestionId: 0xD5F, Value: 0x1", "Not"]}

Record 3647

Non Snoop Latency Multiplier

Firmware Value

LTR Non Snoop Latency Multiplier of PCH PCIE

Opcode
OneOf
Question ID
0xd61
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x479
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": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}
  • {"condition_id": 1570, "type": "SuppressIf", "offset": 488948, "expr": ["EqIdVal QuestionId: 0xD5B, Value: 0x0"]}
  • {"condition_id": 1572, "type": "SuppressIf", "offset": 489140, "expr": ["EqIdVal QuestionId: 0xD5F, Value: 0x1", "Not"]}

Record 3648

LTR Lock

Firmware Value

PCIE LTR Configuration Lock

Opcode
OneOf
Question ID
0xd62
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0x409
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}

Record 3649

Peer Memory Write Enable

Firmware Value

Peer Memory Write Enable/Disable

Opcode
OneOf
Question ID
0xd63
VarStore
PchSetup
VarStore GUID
4570B7F1-ADE8-4943-8DC3-406472842384
Offset
0xc8
Width
1 byte(s)
Range
0 to 1 step 0
ValueLabelMarkers
0DisabledStandard defaultManufacturing default
1Enabled

Visibility / conditions

  • {"condition_id": 1567, "type": "SuppressIf", "offset": 488073, "expr": ["EqIdVal QuestionId: 0xD45, Value: 0x0"]}