TYAN GC68A-B8056 Quick start guide

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GC68A-B8056
Service Engineer’s Manual

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PREFACE
Copyright
This publication, including all photographs, illustrations, and software, is
protected under international copyright laws, with all rights reserved.
Neither this manual, nor any material contained herein, may be reproduced
without written consent of manufacturer.
Copyright 2022 MITAC COMPUTING TECHNOLOGY CORPORATION. All
rights reserved. TYAN®is a registered trademark of MITAC COMPUTING
TECHNOLOGY CORPORATION.
Version 1.0
Disclaimer
Information contained in this document is furnished by MITAC COMPUTING
TECHNOLOGY CORPORATION and has been reviewed for accuracy and
reliability prior to printing. MITAC assumes no liability whatsoever, and
disclaims any express or implied warranty, relating to sale and/or use of TYAN®
products including liability or warranties relating to fitness for a particular
purpose or merchantability. MITAC retains the right to make changes to
produce descriptions and/or specifications at any time, without notice. In no
event will MITAC be held liable for any direct or indirect, incidental or
consequential damage, loss of use, loss of data or other malady resulting from
errors or inaccuracies of information contained in this document.
Trademark Recognition
All registered and unregistered trademarks and company names contained in
this manual are property of their respective owners including, but not limited to
the following.
TYAN®is a trademark of MITAC COMPUTING TECHNOLOGY
CORPORATION.
AMD®is a trademark of AMD®Corporation.
®is a trademark of ®Corporation.
AMI®, AMIBIOS® and combinations thereof are trademarks of AMI
Technologies.
Microsoft®, Windows®are trademarks of Microsoft Corporation.
IBM®, PC®, AT®and PS/2®are trademarks of IBM Corporation.
Winbond®is a trademark of Winbond Electronics Corporation.

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●FCC Declaration
Notice for the USA
Compliance Information Statement (Supplier's Declaration of Conformity, SDoC)
FCC Part 15: This device complies with part 15 of the FCC Rules.
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following conditions:
‧This device may not cause harmful interference.
‧This device must accept any interference received, including interference that may
cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his
own expense.
Notice for Canada
This Class A digital apparatus complies with Canadian ICES-003. Cet appareil
numérique de la Classe A est conforme àla norme NMB-003 du Canada.
●Notice for Europe (CE Mark)
This product is in conformity with the Council Directive 2014/30/EUand 2014/35/EU.

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Warning
This equipment is compliant with Class A of CISPR 32. In a residential environment
this equipment may cause radio interference.
CAUTION
Lithium battery included with this board. Do not puncture, mutilate, or dispose of
battery in fire. There will be danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by manufacturer.
Dispose of used battery according to manufacturer instructions and in accordance
with your local regulations.
●Safety: IEC/EN 62368-1
This equipment is compliant with CB/LVD of Safety: IEC/EN 62368-1.

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About this Manual
This manual is intended for skilled person with hardware knowledge of computers.
Components inside the compartments should be serviced only by a skilled person.
This manual is aimed to provide you with instructions on installing your TYAN
GC68(A)-B8056.
How this guide is organized
This guide contains the following parts:
Chapter 1: Overview
This chapter provides an introduction to the TYAN GC68(A)-B8056 barebones and
standard parts list, describes the external components, gives an overview of the
product from different angles.
Chapter 2: Setting Up
This chapter covers procedures on installing the processors, memory modules, hard
drivers and other optional parts.
Chapter 3: Replacing the Pre-installed Components
This chapter covers the removal and replacement procedures for pre-installed
components.
Chapter 4: Motherboard Information
This chapter lists the hardware setup procedures that you need to abide by when
installing systemcomponents. It includes description of the jumpers and connectors
on the motherboard.
Chapter 5: BIOS Setup
This chapter tells how to change system settings through the BIOS setup menu.
Detailed descriptions of the BIOS parameters are also provided.
Chapter 6: Diagnostics
This chapter introduces some BIOS codes and technical terms to provide better
service for the customers.
Appendix:
This chapter provides the cable connection table, the FRU parts list for reference of
system setup, and technical support in case a problem arises with your system.

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Safety and Compliance Information
Before installing and using TYAN GC68A-B8056, take note of the following
precautions:
·Read all instructions carefully.
·Do not place the unit on an unstable surface, cart, or stand.
·Do not block the slots and opening on the unit, which are provided for
ventilation.
·Only use the power source indicated on the marking label. If you are not
sure, contact the power company.
·The unit uses a three-wire ground cable, which is equipped with a third pin to
ground the unit and prevent electric shock. Do not defeat the purpose of this
pin. If your outlet does not support this kind of plug, contact your electrician
to replace your obsolete outlet.
·Do not place anything on the power cord. Place the power cord where it will
not be in the way of foot traffic.
·Follow all warnings and cautions in this manual and on the unit case.
·Do not push objects in the ventilation slots as they may touch high voltage
components and result in shock and damage to the components.
·When replacing parts, ensure that you use parts specified by the
manufacturer.
·When service or repairs have been done, perform routine safety checks to
verify that the system is operating correctly.
·Avoid using the system near water, in direct sunlight, or near a heating
device.
·Cover the unit when not in use.
·Connection the equipment protective earthing conductor to the installation
protective earthing conductor. (for example, by means of a power cord
connected to a socket-outlet with earthing connection).
.

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Safety Information
Retain and follow all product safety and operating instructions provided
with your equipment. In the event of a conflict between the instructions in
this guide and the instructions in equipment documentation, follow the
guidelines in the equipment documentation.
Observe all warnings on the product and in the operating instructions. To
reduce the risk of bodily injury, electric shock, fire and damage to the
equipment, observe all precautions included in this guide.
You must become familiar with the safety information in this guide before
you install, operate, or service TYAN products.
Symbols on Equipment
Caution. This symbol indicates a potential hazard.
The potential for injury exists if cautions are not
observed. Consult equipment documentation for
specific details.
Caution. Slide-mounted equipment is not to be
used as a shelf or a work space.
Warning. This symbol indicates the presence of
hazardous energy circuits or electric shock
hazards. Refer all servicing to qualified personnel.
Warning. This symbol indicates the presence of a
hot surface or hot component. If this surface is
contacted, the potential for injury exists.
To reduce risk of injury from a hot component,
allow the surface to cool before touching.
CAUTION: Risk of Explosion if Battery is replaced by an
Incorrect Type. Dispose of Used Batteries According to
the Instructions.
ATTENTION: Risque d’explosion si la batterie est
remplacée par un type incorrect. Mettre au rebus les
batteries usagées selon les instructions.
Multiple power connections. Prior to servicing,
disconnect all power cords.
Raccordements de puissance multiples. Avant
l’entretien, vous devez débranchez tous les cordons
d’alimentation.

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General Precautions
·Follow all caution and warning instructions marked on the equipment and
explained in the accompanying equipment documentation.
Machine Room Environment
·This device is for use only in a restricted access location, such as a
machine room or IT room.
 ·Make sure that the area in which you install the system is properly
ventilated and climate-controlled.
·Ensure that the voltage and frequency of your power source match the
voltage and frequency inscribed on the electrical rating label of the
equipment.
·Do not install the system in or near a plenum, air duct, radiator, or heat
register.
·Never use the product in a wet location.
Equipment Chassis
·Do not block or cover the openings to the system.
·Never push objects of any kind through openings in the equipment.
Dangerous voltages might be present.
·Conductive foreign objects can produce a short circuit and cause fire,
electric shock, or damage to your equipment.
·Lift equipment using both hands and with your knees bent.
Equipment Racks
To avoid injury or damage to the equipment:
·Observe local occupational health and safety requirements and guidelines
for manual materials handling.
·Do not attempt to move a rack by yourself; a minimum of two people are
needed to move a rack.
·Do not attempt to move a fully loaded rack. Remove equipment from the
rack before moving it.
·Do not attempt to move a rack on an incline that is greater than 10 degrees

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from the horizontal.
·Make sure the rack is properly secured to the floor or ceiling.
·Make sure the stabilizing feet are attached to the rack if it is a single-rack
installation.
·Make sure racks are coupled together if it is a multiple-rack installation.
·Make sure the rack is level and stable before installing an appliance in the
rack.
·Make sure the leveling jacks are extended to the floor.
·Make sure the full weight of the rack rests on the leveling jacks.
·Always load the rack from the bottom up. Load the heaviest component in
the rack first.
·Make sure the rack is level and stable before pulling a component out of the
rack.
·Make sure only one component is extended at a time. A rack might become
unstable if more than one component is extended.
To avoid damage to the equipment:
·The rack width and depth must allow for proper serviceability and cable
management.
·Ensure that there is adequate airflow in the rack. Improper installation or
restricted airflow can damage the equipment.
·The rack cannot have solid or restricted airflow doors. You must use a
mesh door on the front and back of the rack or remove the doors to ensure
adequate air flow to the system.
·If you install the Model in a rack, do not place equipment on top of the unit.
It will cause restricted airflow and might cause damage to the equipment.
·Make sure the product is properly matted with the rails. Products that are
improperly matted with the rails might be unstable.
·Verify that the AC power supply branch circuit that provides power to the
rack is not overloaded. This will reduce the risk of personal injury, fire, or
damage to the equipment. The total rack load should not exceed 80 percent
of the branch circuit rating. Consult the electrical authority having jurisdiction
over your facility wiring and installation requirements.

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Equipment Power Cords
·Use only the power cords and power supply units provided with your
system. The system might have one or more power cords.
·Plug the power cord into a grounded (earthed) electrical outlet that is easily
accessible at all times.
·In all European electrical environments, you must ground the Green/Yellow
tab on the power cord. If you do not ground the Green/Yellow tab, it can
cause an electrical shock due to high leakage currents.
·Do not place objects on AC power cords or cables. Arrange them so that no
one might accidentally step on or trip over them.
·Do not pull on a cord or cable. When unplugging from the electrical outlet,
grasp the cord by the plug.
·To reduce the risk of electrical shock, disconnect all power cords before
servicing the appliance.
Equipment Batteries
·The system battery contains lithium manganese dioxide. If the battery pack
is not handled properly, there is risk of fire and burns.
·Do not disassemble, crush, puncture, short external contacts, or dispose of
the battery in fire or water.
·Do not expose the battery to temperatures higher than 60°C (140°F).
·The system battery is not replaceable. If the battery is replaced by an
incorrect type, there is danger of explosion. Replace the battery only with a
spare designated for your product.
·Do not attempt to recharge the battery.
·Dispose of used batteries according to the instructions of the manufacturer.
Do not dispose of batteries with the general household waste. To forward
them to recycling or proper disposal, use the public collection system or return
them to TYAN, your authorized TYAN partner, or their agents.
Equipment Modifications
·Do not make mechanical modifications to the system. TYAN is not
responsible for the regulatory compliance of TYAN equipment that has been

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modified.
Equipment Repairs and Servicing
·The installation of internal options and routine maintenance and service of
this product should be performed by skilled person who are knowledgeable
about the procedures, precautions, and hazards associated with equipment
containing hazardous energy levels.
·Do not exceed the level of repair specified in the procedures in the product
documentation. Improper repairs can create a safety hazard.
·Allow the product to cool before removing covers and touching internal
components.
·Remove all watches, rings, or loose jewelry when working before removing
covers and touching internal components.
·Do not use conductive tools that could bridge live parts.
·Use gloves when you remove or replace system components; they can
become hot to the touch.
·If the product sustains damage requiring service, disconnect the product
from the AC electrical outlet and refer servicing to an authorized service
provider. Examples of damage requiring service include:
–The power cord, extension cord, or plug has been damaged.
–Liquid has been spilled on the product or an object has fallen into the
product.
–The product has been exposed to rain or water.
–The product has been dropped or damaged.
–The product does not operate normally when you follow the operating
instructions.
·Retain all screws or other fasteners when removing access cover(s). Upon
completion of accessing inside the product, refasten access cover with original
screws or fasteners.

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Table of Contents
Chapter 1: Overview......................................................................14
1.1 About the TYAN GC68A-B8056..........................................14
1.2 Product Models .................................................................14
1.3 Features ...........................................................................15
1.4 Standard Parts List............................................................20
1.4.1 BoxContents and Accessories.....................................20
1.5 About the Product..............................................................21
1.5.1 System Front View......................................................21
1.5.2 System Rear View.......................................................23
1.5.3 PSU and LAN LED Indications.....................................24
1.5.4 System Top View........................................................25
1.5.5 Chassis Dimensions....................................................26
Chapter 2: Setting Up....................................................................27
2.0.1 Before you Begin ........................................................27
2.0.2 Work Area..................................................................27
2.0.3 Tools..........................................................................27
2.0.4 Precautions ................................................................28
2.1 Installing Motherboard Components....................................29
2.1.1 Removing the Chassis Cover.......................................29
2.1.2 Replacing the Chassis Cover .......................................31
2.1.3 Installing the CPUand Heat sink..................................32
2.1.4 Installing the CPU and Memory Airduct.........................36
2.1.5 Installing the Memory ..................................................38
2.1.6 Installing the Expansion Card.......................................39
2.1.7 Installing the 2.5” Hard Drive........................................41
2.1.8 Installing the M.2 Latch................................................44
2.1.9 Installing IO Rail for OCP Card.....................................46
2.2 Rack Mounting ..................................................................47
2.2.1 Installing the Server in a Rack......................................47
2.2.2 Installing Slide Rails to the Rack ..................................48
2.2.3 Rack mounting the Server ...........................................51
2.2.4 Removing the Server fromRack...................................53
Chapter 3: Replacing Pre-Installed Components........................55
3.1 Introduction.......................................................................55
3.2 Disassembly Flowchart ......................................................55
3.3 Removing the Cover ..........................................................56
3.4 Replacing the Power Supply...............................................56
3.5 Replacing the Front Panel Board ........................................57
3.5.1 Front Panel Board Features.........................................58

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3.6 Replacing the USB Board ..................................................59
3.6.1 USB Board Features...................................................60
3.6 Replacing the HDD Backplane Board..................................61
3.6.1 HDD BP Board Features..............................................62
3.7 Replacing Power Distribution Board....................................63
3.7.1 Power Distribution Board Features...............................64
3.7.2 Connector Definitions..................................................65
3.8 Replacing the Riser Card...................................................66
3.8.1 Riser card Features.....................................................67
3.9 Replacing the Fan .............................................................68
3.10 Replacing the Motherboard ..............................................70
Chapter 4: Mainboard Information...............................................73
4.1 Board Image .....................................................................74
4.2 Block Diagram...................................................................75
4.3 Mainboard Mechanical Drawing..........................................76
4.4 Board Parts, Jumpers and Connectors................................ 77
4.5 LED Definitions .................................................................89
4.6 Installing the Processor and Heat sink ................................92
4.7 Tips on Installing Motherboard in Chassis ...........................96
4.8 Installing the Memory.........................................................98
4.9 Installing Add-In Cards..................................................... 103
4.11 Connecting External Devices.......................................... 104
4.12 Installing the Power Supply ............................................ 105
4.13 Finishing Up.................................................................. 106
Chapter 5: BIOS Setup................................................................107
5.1 About the BIOS ............................................................... 107
5.2 Main Menu...................................................................... 109
5.3 Advanced Menu .............................................................. 111
5.4 CPU Configuration........................................................... 162
5.5 Chipset Menu.................................................................. 165
5.6 Server Management ........................................................ 192
5.7 Security .......................................................................... 201
5.8 Boot................................................................................ 206
5.9 Save & Exit ..................................................................... 210
Chapter 6: Diagnostics...............................................................212
6.1 Flash Utility ..................................................................... 212
6.2 AMIBIOS Post Code (Aptio) ............................................. 213
Appendix I: How to recover UEFI BIOS......................................220
Appendix III: Cable Connection Tables......................................222
Appendix IV: Fan and Temp Sensors.........................................226
Appendix V: FRU Parts Table.....................................................232
Appendix VI: Technical Support.................................................234

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Chapter 1: Overview
1.1 About the TYAN GC68A-B8056
Congratulations on your purchase of the TYAN®GC68A-B8056, a highly optimized
1U rack-mountable barebone system. The GC68A-B8056 is designed to support
single AMD®EPYC™ 9004 processors and up to 3,072GB RDIMM/3DS RDIMM
DDR5 4800/4400/4000 memory, providing a rich feature set and incredible
performance. Leveraging advanced technology from AMD®, the GC68A-B8056
server system is capable of offering scalable 32 and 64-bit computing, high
bandwidth memory design, and lightning-fast PCI-E bus implementation. The
GC68A-B8056 not only empowers your company in nowadays IT demand but also
offers a smooth path for future application usage.
TYAN®also offers GC68A-B8056 in a version that supports up to (12)
hot-swappable 2.5” NVMe devices and (4) 2.5” hot-swappable SATA 6G/SAS 12G
devices. The GC68A-B8056 uses TYAN’s latest chassis featuring a robust structure
and a solid mechanical enclosure. All of this provides GC68A-B8056 the power and
flexibility to meet the needs of nowadays server applications.
1.2 Product Models
The system board within the Tyan Barebone is defined by the following models:
B8056G68AE12HR: single-socket AMD EPYC™ 9004 processor with TDP
300W barebone platform with (12) hot-swap 2.5” NVMe + (4) hot-swap 2.5”
SAS/SATA devices.

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1.3 Features
B8056G68AE12HR-2T Specifications
System
Form Factor
1U Rackmount
Chassis Model
GC68A
Dimension (D x W x H)
26.77" x 17.26" x 1.69" (680 x 438.5 x 43mm)
Motherboard Name
S8056GM2NRE-2T
Board Dimension
Prop. 14.18" x 12.16" (360.2 x 308.8mm)
Front Panel
Buttons
(1) PWR w/ LED / (1) ID w/ LED
LEDs
(1) ID / (1) PWR
I/O Ports
(1) USB 3.2 Gen.1 port
External Drive
Bay
Q'ty / Type
(12) 2.5" hot-swap NVMe HDD/SSDs with
(4) 2.5" hot-swap SATA 6Gb/s
Front Drive Bay Interface
(12) NVMe with (4) SATA 6Gb/s / SAS 12Gb/s
ports
Front HDD Backplane
Support
SAS 12Gb/s /SATA 6Gb/s /NVMe
System Cooling
Configuration
FAN
(3) 4028 fans / (3) 4056 fans
Air Duct
Tailored Air Duct
Power Supply
Type
ERP1U
Input Range
AC 100~240V/12~6A
Frequency
50-60 Hz
Output Watts
850 Watts
Efficiency
80 plus Platinum
Redundancy
1+1
Serviceability
Hot-swap
Processor
Q'ty / Socket Type
(1) AMD Socket SP5
Supported CPU Series
(1) AMD EPYC™ 9004 Series Processor
Thermal Design Power
Wattage
Max up to 300W (cTDP)
Memory
Supported DIMM Qty
(24) DIMM slots
DIMM Type / Speed
DDR5-4800MHz
12 DIMM slots (1DPC), 24 DIMM slots (2DPC)
Capacity
Up to 3,072GB RDIMM/3DS RDIMM DDR5
4800/4400/4000 memory
Memory channel
12 Channels per CPU
Memory voltage
1.1V
Expansion Slots
PCIe
(1) PCI-E Gen.5 x24 slot
(1) PCI-E Gen.5 x16 slot
Pre-installed TYAN Riser
Card (PCIe Gen.5)
(1) M7136G68-L16-1F
(1) FH/HL PCIe Gen.5 x16 slot (Left) /
(1) M7136G68-R16-1F for
(1) FH/HL PCIe Gen.5 x16 slot (Right)

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Others
(1) PCI-E Gen.5 x16 OCP 3.0 mezzanine slot
LAN
Q'ty / Port
(2) 10GbE ports + (1) GbE dedicated for IPMI
Controller
Intel X710-AT2
PHY
Realtek RTL8211F
Storage SATA
Connector
(1) SFF-TA-1016 (MCIO 8x) for (4) SATA ports
Controller
Direct from AMD EPYC CPU
Storage NVMe
Connector (M.2)
(2) 22110/2280 (by PCIe Gen.4 interface)
MCIO
6 MCIO (PCIe5.0 x8)
2 MCIO (PCIe5.0 x8 or 8 SATA 6Gb/s)
1 MCIO (PCIe5.0 x4)
Graphic
Connector type
D-Sub 15-pin
Resolution
Up to 1920x1200
Chipset
Aspeed AST2600
I/O Ports
USB
(1) USB3.2 Gen.1 conn. (Type-A) /
(1) USB3.2 Gen.1 header /
(1) USB3.2 Gen.1 ports (@ front) /
(2) USB3.2 Gen.1 ports (@ rear)
COM
(1) DB-9 COM port
VGA
(1) D-Sub 15-pin port
RJ-45
(2) 10 GbE ports + (1) dedicated GbE for IPMI
Button
UID Button / Power Button
TPM (Optional)
TPM Support
Please refer to our TPM supported list.
Interface
SPI
System
Monitoring
Chipset
Aspeed AST2600
Temperature
Monitors temperature for CPU & system
environment
Voltage
Monitors voltage for CPU, memory, chipset &
power supply
LED
Over temperature warning indicator / Fan & PSU
fail LED indicator / Over voltage warning indicator
Others
Watchdog timer support
Server
Management
Onboard Chipset
Onboard Aspeed AST2600
AST2600 iKVM Feature
24-bit high quality video compression / Supports
storage over IP and remote platform-flash / USB
2.0 virtual hub
AST2600 IPMI Feature
IPMI 2.0 compliant baseboard management
controller (BMC) / 10/100/1000 Mb/s MAC
interface
BIOS
Brand / ROM size
AMI / 64MB
Feature
Hardware Monitor / FAN speed control automatic
/ Boot from USB device/PXE via LAN/Storage /
Console Redirection / SMBIOS 3.3/PnP/Wake on
LAN / ACPI 6.2 / ACPI sleeping states S0, S5
Operating
System
OS supported list
Please refer toour AVL support lists.

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Regulation
FCC (SDoC)
Class A
CE (DoC)
Class A
CB/LVD
Yes
VCCI
Class A
C-Tick
Class A
Operating
Environment
Operating Temp.
10°C ~ 35°C (50°F~ 95°F)
Non-operating Temp.
- 40°C ~ 70°C (-40°F ~ 158°F)
In/Non-operating
Humidity 90
90%, non-condensing at 35°C
Package
Contains
Barebone
(1) GC68A-B8056 Barebone
Manual
(1) Quick Installation Guide
RoHS
RoHS 6/6 Compliant
Yes
B8056G68AE12HR Specifications
System
Form Factor
1U Rackmount
Chassis Model
GC68A
Dimension (D x W x H)
26.77" x 17.26" x 1.69" (680 x 438.5 x 43mm)
Motherboard Name
S8056GME
Board Dimension
Prop. 14.18" x 12.16" (360.2 x 308.8mm)
Front Panel
Buttons
(1) PWR w/ LED / (1) ID w/ LED
LEDs
(1) ID / (1) PWR
I/O Ports
(1) USB 3.2 Gen.1 port
External Drive
Bay
Q'ty / Type
(12) 2.5" hot-swap NVMe HDD/SSDs with (4)
2.5" hot-swap SATA 6Gb/s
Front Drive Bay
Interface
(12) NVMe with (4) SATA 6Gb/s / SAS 12Gb/s
ports
Front HDD Backplane
Support
SAS 12Gb/s /SATA 6Gb/s /NVMe
System Cooling
Configuration
FAN
(3) 4028 fans / (3) 4056 fans
Air Duct
Tailored Air Duct
Power Supply
Type
ERP1U
Input Range
AC 100~240V/12~6A
Frequency
50-60 Hz
Output Watts
850 Watts
Efficiency
80 plus Platinum
Redundancy
1+1
Serviceability
Hot-swap
Processor
Q'ty / Socket Type
(1) AMD Socket SP5

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Supported CPU Series
(1) AMD EPYC™ 9004 Series Processor
Thermal Design Power
Wattage
Max up to 300W (cTDP)
Memory
Supported DIMM Qty
(24) DIMM slots
DIMM Type / Speed
DDR5-4800MHz
12 DIMM slots (1DPC), 24 DIMM slots (2DPC)
Capacity
Up to 3,072GB RDIMM/3DS RDIMM DDR5
4800/4400/4000 memory
Memory channel
12 Channels per CPU
Memory voltage
1.2V
Expansion Slots
PCIe
(1) PCI-E Gen.5 x24 slot
(1) PCI-E Gen.5 x16 slot
Pre-installed TYAN
Riser Card (PCIe Gen.5)
(1) M7136G68-L16-1F
(1) FH/HL PCIe Gen.5 x16 slot (Left) /
(1) M7136G68-R16-1F for
(1) FH/HL PCIe Gen.5 x16 slot (Right)
Others
(1) PCI-E Gen.5 x16 OCP 3.0 mezzanine slot
LAN
Q'ty / Port
(1) GbE dedicated for IPMI
PHY
Realtek RTL8211F
Storage SATA
Connector
(1) SFF-TA-1016 (MCIO 8x) for (4) SATA ports
Controller
Direct from AMD EPYC CPU
Storage NVMe
Connector (M.2)
(2) 22110/2280 (by PCIe Gen.4 interface)
MCIO
6 MCIO (PCIe5.0 x8)
2 MCIO (PCIe5.0 x8 or 8 SATA 6Gb/s)
1 MCIO (PCIe5.0 x4)
Graphic
Connector type
D-Sub 15-pin
Resolution
Up to 1920x1200
Chipset
Aspeed AST2600
I/O Ports
USB
(1) USB3.2 Gen.1 conn. (Type-A) /
(1) USB3.2 Gen.1 header /
(1) USB3.2 Gen.1 ports (@ front) /
(2) USB3.2 Gen.1 ports (@ rear)
COM
(1) DB-9 COM port
VGA
(1) D-Sub 15-pin port
RJ-45
(1) GbE port dedicated for IPMI
Button
UID Button / Power Button
TPM (Optional)
TPM Support
Please refer to our TPM supported list.
Interface
SPI
System
Monitoring
Chipset
Aspeed AST2600
Temperature
Monitors temperature for CPU & system
environment
Voltage
Monitors voltage for CPU, memory, chipset &
power supply
LED
Over temperature warning indicator / Fan &

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PSU fail LED indicator / Over voltage warning
indicator
Others
Watchdog timer support
Server
Management
Onboard Chipset
Onboard Aspeed AST2600
AST2600 iKVM Feature
24-bit high quality video compression /
Supports storage over IP and remote
platform-flash / USB 2.0 virtual hub
AST2600 IPMI Feature
IPMI 2.0 compliant baseboard management
controller (BMC) / 10/100/1000 Mb/s MAC
interface
BIOS
Brand / ROM size
AMI / 64MB
Feature
Hardware Monitor / FAN speed control
automatic / Boot from USB device/PXE via
LAN/Storage / Console Redirection / SMBIOS
3.3/PnP/Wake on LAN / ACPI 6.2 / ACPI
sleeping states S0, S5
Operating System
OS supported list
Please refer toour AVL support lists.
Regulation
FCC (SDoC)
Class A
CE (DoC)
Class A
CB/LVD
Yes
VCCI
Class A
C-Tick
Class A
Operating
Environment
Operating Temp.
10°C ~ 35°C (50°F~ 95°F)
Non-operating Temp.
- 40°C ~ 70°C (-40°F ~ 158°F)
In/Non-operating
Humidity 90
90%, non-condensing at 35°C
Package Contains
Barebone
(1) GC68A-B8056 Barebone
Manual
(1) Quick Installation Guide
RoHS
RoHS 6/6 Compliant
Yes
NOTE:
1. The specifications are subject to change without prior notice.
2. Please visit our Web site for the latest specifications.

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1.4 Standard Parts List
This section describes GC68A-B8056 package contents and accessories. Open the
box carefully and ensure that all components are present and undamaged. The
product should arrive packaged as illustrated below.
1.4.1 Box Contents and Accessories
If any items are missing or appear damaged, contact your retailer or browse to
TYAN’s website for service: http://www.tyan.com
GC68A-B8056 Box Content:
1U chassis
(1+1) ERP1U 850W (80+ Platinum) redundant power supply (pre-installed)
(3) 4028 +(3) 4056 fans
S8056GM2NRE/S8056GM2NE-2T Motherboard(pre-installed)
(1) M1724G68-FPB Front Panel Board(pre-installed)
(1) M1725G68-USB Front Panel Board(pre-installed)
(1) M7136G68-R16-1F 1U PCI-E Riser(pre-installed)
(1) M7136G68-L16-1F 1U PCI-E Riser(pre-installed)
(1) M1631G68-D-85A-PDB Power Distribution Board(pre-installed)
(1) M1299G68A-BPE-12 HDD Backplane Boards(Pre-installed)
GC68A-B8056 Accessories:
(1) Tool-less Rail Kit
(1) CPU heatsink
(1) CPU Air Duct
(2) US Power Cords
(2) EU Power Cords
(2) M.2 Card Latch
(1) Tyan Quick Installation Guide
(1) CHINA ROHS TO DECLARE sheet