Gigabyte R163-S32-AAB1 User manual

R163-S32-AAB1
R163-S32-AAC1
R163-S32-AAC2
4th Gen. Intel® Xeon® Scalable Server System - 1U DP 12-Bay SATA/SAS (AAB1)
4th Gen. Intel® Xeon® Scalable Server System - 1U UP 12-Bay NVMe/SATA/SAS (AAC1)
4th Gen. Intel® Xeon® Scalable Server System - 1U UP 12-Bay NVMe/SATA/SAS (AAC2)
User Manual
Rev. 1.0

Copyright
© 2023 Giga Computing Technology CO., LTD. All rights reserved.
The trademarks mentioned in this manual are legally registered to their respective owners.
Disclaimer
Information in this manual is protected by copyright laws and is the property of Giga Computing.
Changes to the specications and features in this manual may be made by Giga Computing
without prior notice. No part of this manual may be reproduced, copied, translated, transmitted, or
published in any form or by any means without Giga Computing's prior written permission.
Documentation Classications
In order to assist in the use of this product, Giga Computing provides the following types of documen-
tation:
 User Manual: detailed information & steps about the installation, conguration and use of this
product (e.g. motherboard, server barebones), covering hardware and BIOS.

User Guide: detailed information about the installation & use of an add-on hardware or
software component (e.g. BMC rmware, rail-kit) compatible with this product.
Quick Installation Guide: a short guide with visual diagrams that you can reference easily for
installation purposes of this product (e.g. motherboard, server barebones).
Please see the support section of the online product page to check the current availability of these
documents.
For More Information
For related product specications, the latest rmware and software, and other information please visit our website at
http://www.gigabyte.com/Enterprise
For GIGABYTE distributors and resellers, additional sales & marketing materials are available from our reseller
portal: http://reseller.b2b.gigabyte.com
For further technical assistance, please contact your GIGABYTE representative or visit
https://esupport.gigabyte.com/ to create a new support ticket
For any general sales or marketing enquiries, you may also message GIGABYTE server directly by email:
server[email protected]

Conventions
The following conventions are used in this user's guide:
NOTE!
Gives bits and pieces of additional
information related to the current topic.
CAUTION!
Gives precautionary measures to
avoid possible hardware or software problems.
WARNING!
Alerts you to any damage that might
result from doing or not doing specic actions.

Server Warnings and Cautions
Before installing a server, be sure that you understand the following warnings and cautions.
WARNING!
To reduce the risk of electric shock or damage to the equipment:
• Do not disable the power cord grounding plug. The grounding plug is an important safety
feature.
• Plug the power cord into a grounded (earthed) electrical outlet that is easily accessible at all
times.
• Unplug all the power cords from the power supplies to disconnect power to the equipment.
•
• Shock Hazard! Disconnect all power supply cords before servicing.
• Do not route the power cord where it can be walked on or pinched by items placed against it.
Pay particular attention to the plug, electrical outlet, and the point where the cord extends from
the server.
WARNING!
To reduce the risk of personal injury from hot surfaces, allow the drives
and the internal system components to cool before touching them.
WARNING!
This server is equipped with high speed fans. Keep away from hazardous
moving fan blades during servicing.
WARNING!
This equipment is intended to be used in Restrict Access Location. The
access can only be gained by Skilled person. Only authorized by well
trained professional person can access the restrict access location.
CAUTION!
• Do not operate the server for long periods with the access panel open or removed. Operat-
ing the server in this manner results in improper airow and improper cooling that can lead to
thermal damage.
• Danger of explosion if battery is incorrectly replaced.
• Replace only with the same or equivalent type recommended by the manufacturer.
• Dispose of used batteries according to the manufacturer’s instructions.
CAUTION!
Risk of explosion if battery is replaced incorrectly or with an incorrect type. Replace the battery
only with the same or equivalent type recommended by the manufacturer. Dispose of used bat-
teries according to the manufacturer’s instructions.

Electrostatic Discharge (ESD)
CAUTION!
ESD CAN DAMAGE DRIVES, BOARDS, AND OTHER PARTS. WE RECOMMEND THAT YOU
PERFORM ALL PROCEDURES AT AN ESD WORKSTATION. IF ONE IS NOT AVAILABLE,
PROVIDE SOME ESD PROTECTION BY WEARING AN ANTI-STATIC WRIST STRAP AT-
TACHED TO CHASSIS GROUND -- ANY UNPAINTED METAL SURFACE -- ON YOUR SERVER
WHEN HANDLING PARTS.
Always handle boards carefully. They can be extremely sensitive to ESD. Hold boards only by
their edges without any component and pin touching. After removing a board from its protective
wrapper or from the system, place the board component side up on a grounded, static free sur-
face. Use a conductive foam pad if available but not the board wrapper. Do not slide board over
any surface.
System power on/o󰀨: To remove power from system, you must remove the system from
rack. Make sure the system is removed from the rack before opening the chassis, adding, or
removing any non hot-plug components.
Hazardous conditions, devices and cables: Hazardous electrical conditions may be
present on power, telephone, and communication cables. Turn off the system and disconnect the
cables attached to the system before servicing it. Otherwise, personal injury or equipment dam-
age can result.
Electrostatic discharge (ESD) and ESD protection: ESD can damage drives,
boards, and other parts. We recommend that you perform all procedures in this chapter only at
an ESD workstation. If one is not available, provide some ESD protection by wearing an antistatic
wrist strap attached to chassis ground (any unpainted metal surface on the server) when handling
parts.
ESD and handling boards: Always handle boards carefully. They can be extremely
sensitive to electrostatic discharge (ESD). Hold boards only by their edges. After removing a
board from its protective wrapper or from the system, place the board component side up on a
grounded, static free surface. Use a conductive foam pad if available but not the board wrapper.
Do not slide board over any surface.
Installing or removing jumpers: A jumper is a small plastic encased conductor that slips
over two jumper pins. Some jumpers have a small tab on top that can be gripped with ngertips
or with a pair of ne needle nosed pliers. If the jumpers do not have such a tab, take care when
using needle nosed pliers to remove or install a jumper; grip the narrow sides of the jumper with
the pliers, never the wide sides. Gripping the wide sides can dam-age the contacts inside the
jumper, causing intermittent problems with the function con-trolled by that jumper. Take care to
grip with, but not squeeze, the pliers or other tool used to remove a jumper, or the pins on the
board may bend or break.

- 6 -
Table of Contents
Chapter 1 Hardware Installation .....................................................................................9
1-1 Installation Precautions.................................................................................... 9
1-2 Product Specications.................................................................................... 10
1-3 System Block Diagram................................................................................... 14
1-3-1 R163-S32-AAB1.....................................................................................................14
1-3-2 R163-S32-AAC1.....................................................................................................14
1-3-3 R163-S32-AAC2.....................................................................................................15
Chapter 2 System Appearance.....................................................................................16
2-1 Front View...................................................................................................... 16
2-2 Rear View....................................................................................................... 17
2-3 Front Panel LEDs and Buttons....................................................................... 18
2-3-1 RoT LEDs...............................................................................................................19
2-4 Rear System LAN LEDs................................................................................. 21
2-5 Power Supply Unit (PSU) LED....................................................................... 22
2-6 Hard Disk Drive LEDs .................................................................................... 23
Chapter 3 System Hardware Installation ......................................................................24
3-1 Removing Chassis Cover............................................................................... 25
3-2 Removing and Installing the Fan Duct ........................................................... 26
3-3 Removing and installing the Heat Sink .......................................................... 27
3-4 Installing the CPU .......................................................................................... 28
3-5 Installing the Memory..................................................................................... 30
3-5-1 Eight Channel Memory Conguration.....................................................................30
3-5-2 Installing the Memory ............................................................................................31
3-5-3 DIMM Population Table ..........................................................................................31
3-5-4 Processor and Memory Module Matrix Table .........................................................32
3-6 Installing the PCI Expansion Card ................................................................. 33
3-7 Installing the Mezzanine Card........................................................................ 34
3-7-1 OCP 3.0..................................................................................................................34
3-8 Installing the Hard Disk Drive......................................................................... 35
3-9 Installing the M.2 Device and Heat Sink ........................................................ 36
3-10 Replacing the Fan Assembly.......................................................................... 37
3-11 Replacing the Power Supply.......................................................................... 38
3-12 Cable Routing ................................................................................................ 39

- 7 -
3-12-1 R163-S32-AAC1.....................................................................................................39
3-12-2 R163-S32-AAC2.....................................................................................................43
3-12-3 R163-S32-AAB1.....................................................................................................46
Chapter 4 Motherboard Components ...........................................................................49
4-1 Motherboard Components ............................................................................. 49
4-2 Jumper Setting .............................................................................................. 51
4-3 Backplane Board Storage Connector ............................................................ 52
4-3-1 CBP10C0................................................................................................................52
Chapter 5 BIOS Setup ..................................................................................................53
5-1 The Main Menu .............................................................................................. 55
5-2 Advanced Menu ............................................................................................. 58
5-2-1 Trusted Computing .................................................................................................59
5-2-2 Serial Port Console Redirection .............................................................................60
5-2-3 SIO Conguration...................................................................................................63
5-2-4 PCI Subsystem Settings.........................................................................................64
5-2-5 USB Conguration..................................................................................................66
5-2-6 Network Stack Conguration ..................................................................................67
5-2-7 Post Report Conguration ......................................................................................68
5-2-8 NVMe Conguration ...............................................................................................69
5-2-9 Chipset Conguration .............................................................................................70
5-2-10 Tls Auth Conguration ............................................................................................71
5-2-11 iSCSI Conguration................................................................................................72
5-2-12 Intel(R) Ethernet Controller X710 for 10GBASE-T .................................................73
5-2-13 VLAN Conguration................................................................................................75
5-2-14 Driver Health...........................................................................................................76
5-3 Chipset Menu................................................................................................. 77
5-3-1 Processor Conguration .........................................................................................78
5-3-2 Common RefCode Conguration ...........................................................................81
5-3-3 UPI Conguration ...................................................................................................82
5-3-4 Memory Conguration ............................................................................................84
5-3-5 IIO Conguration ....................................................................................................87
5-3-6 Advanced Power Management Conguration ........................................................89
5-3-7 PCH Conguration..................................................................................................91
5-3-8 Miscellaneous Conguration ..................................................................................93
5-3-9 Server ME Conguration ........................................................................................94
5-3-10 Runtime Error Logging Settings .............................................................................95
5-3-11 Power Policy...........................................................................................................97
5-4 Server Management Menu............................................................................. 99
5-4-1 System Event Log ................................................................................................101

- 8 -
5-4-2 View FRU Information ..........................................................................................102
5-4-3 BMC VLAN Conguration.....................................................................................103
5-4-4 BMC Network Conguration .................................................................................104
5-4-5 IPv6 BMC Network Conguration.........................................................................105
5-5 Security Menu .............................................................................................. 106
5-5-1 Secure Boot .........................................................................................................107
5-6 Boot Menu.................................................................................................... 110
5-7 Save & Exit Menu......................................................................................... 112
5-8 BIOS Recovery ............................................................................................ 114
5-9 BIOS POST Beep code (AMI standard)....................................................... 115
5-9-1 PEI Beep Codes...................................................................................................115
5-9-2 DXE Beep Codes .................................................................................................115

Hardware Installation
- 9 -
1-1 Installation Precautions
The motherboard/system contain numerous delicate electronic circuits and components which
can become damaged as a result of electrostatic discharge (ESD). Prior to installation, carefully
read the service guide and follow these procedures:
• Prior to installation, do not remove or break motherboard S/N (Serial Number) sticker or
warranty sticker provided by your dealer. These stickers are required for warranty validation.
• Always remove the AC power by unplugging the power cord from the power outlet before
installing or removing the motherboard or other hardware components.
• When connecting hardware components to the internal connectors on the motherboard,
make sure they are connected tightly and securely.
• When handling the motherboard, avoid touching any metal leads or connectors.
• It is best to wear an electrostatic discharge (ESD) wrist strap when handling electronic
components such as a motherboard, CPU or memory. If you do not have an ESD wrist
strap, keep your hands dry and rst touch a metal object to eliminate static electricity.
• Prior to installing the motherboard, please have it on top of an antistatic pad or within an
electrostatic shielding container.
• Before unplugging the power supply cable from the motherboard, make sure the power
supply has been turned off.
• Before turning on the power, make sure the power supply voltage has been set according to
the local voltage standard.
• Before using the product, please verify that all cables and power connectors of your
hardware components are connected.
• To prevent damage to the motherboard, do not allow screws to come in contact with the
motherboard circuit or its components.
• Make sure there are no leftover screws or metal components placed on the motherboard or
within the computer casing.
• Do not place the computer system on an uneven surface .
• Do not place the computer system in a high-temperature environment.
• Turning on the computer power during the installation process can lead to damage to
system components as well as physical harm to the user.
• If you are uncertain about any installation steps or have a problem related to the use of the
product, please consult a certied computer technician.
Chapter 1 Hardware Installation

Hardware Installation
- 10 -
1-2 Product Specications
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
System
Dimension
1U
438mm (W) x 43.5mm (H) x 710mm (D)
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
CPU 4th Generation Intel® Xeon® Scalable Processors
Intel® Xeon® Platinum Processor, Intel® Xeon® Gold Processor,
Intel® Xeon® Silver Processor
CPU TDP up to 350W
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Socket 1 x LGA 4677
Socket E
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Chipset Intel® C741 Chipset
Socket
Socket
Security
Security
Security UEFI Secure Boot
Silicon root of trust
SNMP Support: V3
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Memory 16 x DIMM slots
DDR5 memory supported only
8-Channel memory architecture
RDIMM modules up to 128GB supported
3DS RDIMM modules up to 256GB supported
Memory speed: Up to 4800 MHz (1DPC), 4400 MHz (2DPC)
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
LAN 1 x 1Gb/s LAN port (1 x Intel® I210-AT)
Supported NCSI function
1 x 10/100/1000 management LAN
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Video Integrated in Aspeed® AST2600
2D Video Graphic Adapter with PCIe bus interface
1920x1200@60Hz 32bpp, DDR4 SDRAM
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Storage R163-S32-AAB1
12 x 2.5" SATA/ SAS hot-swappable bays
SAS card is required for SAS devices support
R163-S32-AAC1
12 x 2.5" Gen4 NVMe/ SATA/ SAS hot-swappable bays
SAS card is required for SAS devices suppor
R163-S32-AAC2
8 x 2.5" SATA/ SAS hot-swappable bays
4 x 2.5" Gen4 NVMe hot-swappable bays
SAS card is required for SAS devices support
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
RAID Intel® SATA RAID 0/1/10/5
NOTE:
We reserve the right to make any changes to the product specications and product-related
information without prior notice.

Hardware Installation
- 11 -
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Expansion Slot Riser Card CRS101O:
- 1 x PCIe x16 slot (Gen5 x16), FHHL
Riser Card CRS101P:
- 1 x PCIe x16 slot (Gen5 x16), FHHL
2 x OCP 3.0 slots with PCIe Gen5 x16 bandwidth
- Supported NCSI function
1 x M.2 slot:
- M-key
- PCIe Gen3 x4
- Supports NGFF-2280/22110 cards
- From PCH (C741)
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Internal I/O 1 x M.2 slot
1 x TPM header
2 x OCP 3.0 mezzanine slots
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Front I/O 2 x USB 3.2 Gen1
1 x Power button with LED
1 x ID button with LED
1 x NMI button
1 x Reset button
1 x LAN activity LED
1 x HDD activity LED
1 x System status LED
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Rear I/O 2 x USB 3.2 Gen1
1 x Mini-DP
1 x RJ45
1 x MLAN
1 x ID button with LED
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Backplane I/O Backplane P/N: 9CBP10C0NR-00
Speed and bandwidth: SATA 6Gb/s or SAS 12Gb/s
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
TPM 1 x TPM header with SPI interface
Optional TPM2.0 kit: CTM010
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Power Supply R163-S32-AAB1
Dual 800W (240V) 80 PLUS Platinum redundant power supply
AC Input:
- 100-240V~/ 10-4A, 50-60Hz
DC Input:
- 240Vdc/ 4A
DC Output:
- Max 800W
+12V/ 66A
+12Vsb/ 2.5A

Hardware Installation
- 12 -
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Power Supply R163-S32-AAC1/R163-S32-AAC2
Dual 1300W (240V) 80 PLUS Platinum redundant power supply
AC Input:
- 100-240V~/ 12-7A, 50-60Hz
- 200-240V~/ 8A, 50-60Hz
DC Input:
- 240Vdc/ 6.5A
DC Onput:
- Max 1000W/ 100-240V~
+12V/ 80.5A
+12Vsb/ 3A
- Max 1300W/ 200-240V~ or 240Vdc Input
+12V/ 105.4A
+12Vsb/ 3A
NOTE:
The default power supply is based on a basic system conguration. Please
contact with technical representatives to determine the best power supply
selection for your system conguration requirements and preferred efciency.
The power supply specifications provided herein is for the default server
conguration. Different SKUs have different PSU specs, so please see the system
rating label on the server for the accurate PSU specication.
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
System
Management
Aspeed® AST2600 management controller
GIGABYTE Management Console (AMI MegaRAC SP-X) web interface
Dashboard
HTML5 KVM
Sensor Monitor (Voltage, RPM, Temperature, CPU Status …etc.)
Sensor Reading History Data
FRU Information
SEL Log in Linear Storage / Circular Storage Policy
Hardware Inventory
Fan Prole
System Firewall
Power Consumption
Power Control
LDAP / AD / RADIUS Support
Backup & Restore Conguration
Remote BIOS/BMC/CPLD Update
Event Log Filter
User Management
Media Redirection Settings
PAM Order Settings
SSL Settings
SMTP Settings

Hardware Installation
- 13 -
Socket
Socket
Security
Security Server Operating Properties
Power Supply
System fanSystem fanSystem fan
Operating
Properties
Operating temperature: 10°C to 35°C
Operating humidity: 8-80% (non-condensing)
Non-operating temperature: -40°C to 60°C
Non-operating humidity: 20%-95% (non-condensing)

Hardware Installation
- 14 -
1-3 System Block Diagram
1-3-1 R163-S32-AAB1
1-3-2 R163-S32-AAC1

Hardware Installation
- 15 -
1-3-3 R163-S32-AAC2

System Appearance
- 16 -
Chapter 2 System Appearance
2-1 Front View
2
3
1
HDD0
HDD1
HDD2
HDD3
HDD4
HDD5
HDD8
HDD9
HDD6
HDD7
HDD10
HDD11
No. Description
1. Front USB 3.2 Gen1 Port
2. Front Panel LEDs and Buttons
3. 2.5" Drive Bays
Note! Drives with green latches support NVMe.
• Please Go to Chapter 2-3 Front Panel LED and Buttons for detail description of function
LEDs.

System Appearance
- 17 -
2-2 Rear View
PSU2 PSU1 SLOT1
SLOT3
SLOT4
SLOT2
843
12
69 7
5
No. Description
1. PCIe Slot/NVMe SSD by default(Note)
2. PCIe Slot
3. OCP 3.0 Slot (Option/SFF/NVMe SSD by default(Note))
4. ID Button
5. 1GbE LAN Port
6. 10/100/1000 Server Management LAN Port
7. USB 3.2 Gen1 Port x 2
8. Mini DP Port
9. OCP 3.0 Slot (Option/SFF)
(Note) The function "NVMe SSD by default" is R163-S32-AAC1 supported only..

System Appearance
- 18 -
2-3 Front Panel LEDs and Buttons
RST L1 L2
ID
1
25
634 7
(Note) If your server features RoT function, please see the following section for detail LED behavior.
No. Name Color Status Description
1. Power button
with LED
Green On System is powered on
N/A Off System is not powered on or in ACPI S5 state (power off)
2. ID Button(Note) Press the button to activate system identication
3.
System
Status
LED(Note)
Green Solid On System is operating normally.
Amber
Solid On
Critical condition, may indicate:
System fan failure
System temperature
Blink
Non-critical condition, may indicate:
Redundant power module failure
Temperature and voltage issue
Chassis intrusion
N/A Off
System is not ready, may indicate:
POST error
NMI error
Processor or terminator missing
4. HDD Status
LED
Green On HDD locate
Blink HDD access
Amber On HDD fault
Green/
Amber Blink HDD rebuilding
N/A Off No HDD access or no HDD fault.
5. LAN 2 Active/
Link LEDs The function is disabled.
6. LAN 1 Active/
Link LEDs
Green Solid On Link between system and network or no access.
Green Blink Data trasmission or receiving is occuring
N/A Off No data transmission or receiving is occuring
7. Reset Button Press the button to reset the system.

System Appearance
- 19 -
2-3-1 RoT LEDs
RST L1 L2
ID
ID LED
Status LED
LED on Front panel(Note5)
ID LED Status LED
EC Firmware (FW) Authentication fail or not exit
EC FW is broken or not exit (Note1) OFF OFF
Authenticating/Recovering BMC/BIOS Images
Authenticating Images OFF OFF
Recovering BMC Active Flash
Blinks Blue
4 times per
second
Blinks Green
4 times per
second
Recovering BIOS Active Flash
Blinks Blue
4 times per
second
Blinks Green
4 times per
second
Authentication (AUTH) Pass
Recovering BIOS Active Flash OFF OFF
BMC : AUTH pass after doing recovery
BIOS : AUTH pass after doing recovery OFF OFF
BMC : AUTH pass after doing recovery
BIOS : AUTH pass OFF OFF
BMC : AUTH pass
BIOS : AUTH pass after doing recovery OFF OFF
Active Flash Authentication (AUTH) Fail
BMC : AUTH Fail(Note2)
Blinks Blue
1 time per
second
Blinks Green
1 time per
second
BIOS : AUTH fail(Note2)
Blinks Blue
1 time per
second
Blinks Amber
1 time per
second

System Appearance
- 20 -
BMC : AUTH fail after doing recovery(Note3)
Blinks Blue
2 times per
second
[ON OFF OFF]
Blinks Green
2 times per
second
[ON OFF OFF]
BIOS : AUTH fail after doing recovery(Note3)
Blinks Blue
2 times per
second
[ON OFF OFF]
Blinks Amber
2 times per
second
[ON OFF OFF]
Backup Flash Authentication Fail(Note4)
BMC : AUTH fail
Blinks Blue
2 times per
second
[ON OFF
ON OFF]
Blinks Green
2 times per
second
[ON OFF
ON OFF]
BIOS : AUTH fail
Blinks Blue
2 times per
second
[ON OFF
ON OFF]
Blinks Amber
2 times per
second
[ON OFF
ON OFF]
NOTE!
1. EC FW is broken or not exited result in Microchip CEC1702 cannot load EC FW for authentication.
2 (1) Authentication fail include below scenarios
Conguration table is missing or modied
Public key is missing or modied
Protected area or signature is modied
Flash empty
3. If active ash is still authentication failed after recovery sequence, Microchip CEC1702 stop the process
and showing LED behavior.
4. If backup flash authentication is failed cause by configuration table, public key or protected area is
broken. Microchip CEC1702 stop the process and showing LED behavior.
5. Front panel LED is controlled by BMC or Microchip CEC1702. Once Microchip CEC1702 is working(Auth
or recovery), the front panel LED is controlled by Microchip CEC1702 and vice versa.