X399D8A-2T
User Manual
Version 1.0
Published June 2019
Copyright©2019 ASRock Rack INC. All rights reserved.
Version 1.0
Published July 2019
Copyright©2019 ASRock Rack Inc. All rights reserved.
Copyright Notice:
No part of this documentation may be reproduced, transcribed, transmitted, or
translated in any language, in any form or by any means, except duplication of
documentation by the purchaser for backup purpose, without written consent of
ASRock Rack Inc.
Products and corporate names appearing in this documentation may or may not
be registered trademarks or copyrights of their respective companies, and are used
only for identication or explanation and to the owners’ benet, without intent to
infringe.
Disclaimer:
Specications and information contained in this documentation are furnished
for informational use only and subject to change without notice, and should not
be constructed as a commitment by ASRock Rack. ASRock Rack assumes no
responsibility for any errors or omissions that may appear in this documentation.
With respect to the contents of this documentation, ASRock Rack does not provide
warranty of any kind, either expressed or implied, including but not limited to
the implied warranties or conditions of merchantability or tness for a particular
purpose.
In no event shall ASRock Rack, its directors, ocers, employees, or agents be liable
for any indirect, special, incidental, or consequential damages (including damages
for loss of prots, loss of business, loss of data, interruption of business and the
like), even if ASRock Rack has been advised of the possibility of such damages
arising from any defect or error in the documentation or product.
is device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
CALIFORNIA, USA ONLY
e Lithium battery adopted on this motherboard contains Perchlorate, a toxic substance
controlled in Perchlorate Best Management Practices (BMP) regulations passed by the
California Legislature. When you discard the Lithium battery in California, USA, please
follow the related regulations in advance.
“Perchlorate Material-special handling may apply, see ww w.dtsc.ca.gov/hazardouswaste/
perchlorate”
ASRock Rack’s Website: www.ASRockRack.com
Contact Information
If you need to contact ASRock Rack or want to know more about ASRock Rack,
you’re welcome to visit ASRock Rack ’s website at www.ASRockRack.com; or you
may contact your dealer for further information.
ASRock Rack Incorporation
6F., No.37, Sec. 2, Jhongyang S. Rd., Beitou District,
Taipei City 112, Taiwan (R.O.C.)
Contents
Chapter 1 Introduction 1
1.1 Package Contents 1
1.2 Specications 2
1.3 Unique Features 6
1.4 Motherboard Layout 7
1.5 Onboard LED Indicators 10
1.6 I/O Panel 11
1.7 Block Diagram 13
Chapter 2 Installation 14
2.1 Screw Holes 14
2.2 Pre-installation Precautions 15
2.3 Installing the CPU and Heatsink 16
2.4 Installing the CPU Cooler 20
2.5 Installation of Memory Modules (DIMM) 23
2.6 Expansion Slots (PCI Express Slots) 25
2.7 Jumper Setup 26
2.8 Onboard Headers and Connectors 28
2.9 Unit Identication purpose LED/Switch 35
2.10 Driver Installation Guide 35
2.11 M.2_SSD (NGFF) Module Installation Guide 36
Chapter 3 UEFI Setup Utility 39
3.1 Introduction 39
3.1.1 UEFI Menu Bar 39
3.1.2 Navigation Keys 40
3.2 Main Screen 41
3.3 OC Tweaker 42
3.4 Advanced Screen 49
3.4.1 CPU Conguration 50
3.4.2 Chipset Conguration 51
3.4.3 Storage Conguration 53
3.4.4 ACPI Conguration 54
3.4.5 Super IO Conguration 55
3.4.6 Serial Port Console Redirection 56
3.4.7 H/W Monitor 60
3.4.8 AMD CBS 62
3.4.9 AMD PBS 63
3.4.10 Instant Flash 64
3.5 Server Mgmt 65
3.5.1 System Event Log 66
3.5.2 BMC Network Conguration 67
3.6 Security 69
3.7 Boot Screen 70
3.7.1 CSM Parameters 72
3.8 Exit Screen 74
Chapter 4 Software Support 75
4.1 Install Operating System 75
4.2 Support CD Information 75
4.2.1 Running The Support CD 75
4.2.2 Drivers Menu 75
4.2.3 Utilities Menu 75
4.2.4 Contact Information 75
Chapter 5 Troubleshooting 76
5.1 Troubleshooting Procedures 76
5.2 Technical Support Procedures 78
5.3 Returning Merchandise for Service 78
Chapter 1 Introduction
ank you for purchasing ASRock Rack X399D8A-2T motherboard, a reliable
motherboard produced under ASRock Rack’s consistently stringent quality control.
It delivers excellent performance with robust design conforming to ASRock Rack’s
commitment to quality and endurance.
In this manual, chapter 1 and 2 contains introduction of the motherboard and step-
by-step guide to the hardware installation. Chapter 3 and 4 contains the conguration
guide to BIOS setup and information of the Support CD.
Becau se the motherboard specications and the BIOS soware might be updated, the content of thi s manual will be subject to change without notice. In case any modic ations of
this manual occ ur, the updated version will be avail able on ASRock Rack website without
further notice. You may nd the latest memor y and CPU support lists on ASRock Ra ck
website a s well. ASRock Rack’s Website: www.ASRockRack.com
If you require technical support related to this motherboard, please visit our website for
specic information about the model you are using.
http://www.asrockrack.com/support/
X399D8A-2T
1.1 Package Contents
ASRock Rack X399D8A-2T Motherboard
•
(ATX Form Factor: 12.0-in x 9.6-in, 30.5 cm x 24.4 cm)
Support CD
•
Quick Installation Guide
•
1 x SATA3 Cable (60cm)
•
1 x Mini SAS HD to 4 SAS/SATA Cable (12G)
•
2 x Screws for M.2 Sockets
•
1 x I/O Shield
•
If any items are missing or appear damaged, contac t your authoriz ed dealer.
English
English
1.2 Specications
X399D8A-2T
MB Physical Status
Form Factor ATX
Dimension 12'' x 9.6'' (30.5 cm x 24.4 cm)
Processor System
CPU Supports AMD Ryzen™ readripper™ Processors
Socket AMD Socket TR4 4094P
Chipset AMD X399
System Memory
Capacity - 8 x 288-pin DDR4 DIMM slots
- Supports up to 256GB DDR4 ECC U-DIMM
Type - Quad Channel Memory Technology
- Supports DDR4 ECC U-DIMM
Vol t age 1.2V
DIMM Size per
DIMM
DIMM Frequency ECC / non-ECC U-DIMM: 3600+(OC)/3200(OC)/2933
Expansion Slot
PCIe 3.0 x 16 SLOT2: Gen3 x16 link, auto switch to x8 link if Slot3 is
PCIe 2.0 x 4
(open-ended)
M.2 1x M-key (PCIe3.0 x4 or SATA 6Gb/s shared with SATA port)
Storage
SATA Controller 8x SATA 6Gb/s; 2x SATA DOM, 4 via mini-SAS HD, 2x SATA
Additional SATA
Controller
Ethernet
Interface 10Gbps/1000 Mbps
ECC U-DIMM: 32GB, 16GB, 8GB, 4GB
(OC)/2666/2400/2133 MHz
occupied.
SLOT3: Gen3 x8 link
SLOT4: Gen3 x16 link, auto switch to x8 link if Slot5 is
ccupied.
SLOT5: Gen3 x8 link
SLOT6: Gen3 x16 link
SLOT7: Gen2 x 4 link
support 2230/2242/2260/2280/22110
1x M-key (PCIe3.0 x4) support 2230/2242/2260/2280/22110 (
Reserved BOM option for OCU Link)
7-pin (one shared with M.2)
Asmedia 1061: 2 x SATA3 6.0 Gb/s (SATA3_6 / SATA3_7)
2 3
LAN Controller -2 x RJ45 10GbEby Intel® X550-AT2
- Supports Wake-On-LAN
- Supports Energy Ecient Ethernet 802.3az
- Supports Dual LAN with Teaming function
- Supports PXE
- LAN1 Supports NCSI
Management
BMC Controller ASPEED AST2500 : IPMI (Intelligent Platform Management
Interface) 2.0 with Ikvm and vMedia support
IPMI Dedicated
GLAN
Features NMI
Gracphics
Controller ASPEED AST2500
VRAM DDR4 16MB
Audio
Audio code Realtek ALC892
Rear Panel I/O
PS/2 KB/mouse 1
VGA Port 1 x D-Sub
USB 3.1 Gen1 Port 2
USB 3.1 Gen2 Port 2 (1 type A, 1 type C)
LAN Port -2 x RJ45: 2x 10GbE by Intel® X550-AT2
SPDIF 1
Audio 1(3 jack)
Internal Connector
Auxiliary Panel
Header
VGA header 1
COM header 1
SATA DOM 2
Speaker 1(4-pi n)
TR1 1
TPM Header 1
IPMB Header 1
PMBus Header 1
BMC SMBus
Header
Fan Header 6 x 4-pin Fans (1CPU/5 system)
ATX power 1x (24-pin) + 1x (8-pin) + 1x (8-pin)
1 x Realtek RTL8211E for dedicated management
-1x IPMI dedicated LAN"
-LAN Ports with LED (ACT/LINK LED and SPEED LED)
1 (includes chassis intrusion, location button & LED, system
fault LED, and front LAN LED)
1
X399D8A-2T
English
Type A USB 3.1
Gen1 Port
USB 3.1 Gen1
Header
USB 2.0 Header 1 ( support 2 USB2.0)
ClearCMOS 1 (short pad)
NMI button 1
Front Panel 1
Buzzer 1
80 debug port
LED
PWR_SMB 1
OH/FanFail LED 6 (Fan Fail LED only )
System BIOS
BI O S Ty p e 128Mb AMI UEFI Legal BIOS
BIOS Features - Plug and Play (PnP)
Hardware Monitor
Temperature - CPU Temperature Sensing
Fan - CPU/Rear/Front Fan Tachometer
Vol t age Voltage Monitoring: Vcore, VCCMAB, VCCMCD, 3v, 5v,
GPU Support
Tech nolo gy Supports AMD Quad-GPU CrossFireX™ Technology
Support OS
OS Microso® Windows®
1
1 ( support 2 USB3.1 Gen1)
1
- ACPI 2.0 Compliance Wake Up Events
- SMBIOS 2.8 Support
- ASRock Rack Instant Flash
- System Temperature Sensing
- Card side Temperature Sensing
- System TR Temperature Sensing
- CPU Quiet Fan (Allow Chassis Fan Speed Auto-Adjust by
CPU Temperature)
- CPU/Rear/Front Fan Multi-Speed Control
12v, 1.05V_PCH, +BAT, 3VSB, 5VSB, 5V_Dual, VcoreNB
- Windows 10 (64 bit)
Linux®
- RedHat Enterprise Linux Server 7.3 (64bit) / 7.6 (64bit)
English
- CentOs 7.3 (64 bit) / 7.6 (64 bit)
- UBuntu 16.04 (64 bit) / 18.04 (64 bit)
Virtual:
- VMWare ESXi 6.5 u1
* AMD R AID mode does not support Linu x OS installation.
* Please refer to our website for the latest OS s uppor t list.
4 5
Environment
Temperature Operation temperature: 10°C ~ 35°C / Non operation
temperature: -40°C ~ 70°C
NOTE: Please refer to our website for the latest specications.
is motherboard suppor ts Wake from on Board LAN. To use this function, please make
sure that the “Wake on Mag ic Packe t from power o state” is enabled in Device Manager
> Intel® Ethernet Connection > Power Management. And the “PCI Devices Power On” is
enabled in UEFI SETUP UTILITY > Advance d > ACPI Conguration. A er that , onboard
LAN1&2 can wake up S5 under OS.
If you install Intel® LAN utility or Marvell SATA utility, thi s motherboard may fail Windows® Hardware Quality Lab (WHQL) certication tests . If you install the drivers only, it
will pa ss the WHQL tests.
X399D8A-2T
English
1.3 Unique Features
ASRock Instant Flash is a BIOS ash utility embedded in Flash ROM. is conve-
nient BIOS update tool allows you to update system BIOS without entering operating
systems rst like Windows®. With this utility, you can press the <F6> key during the
POST or the <F2> key to enter into the BIOS setup menu to access ASRock Rack
Instant Flash. Just launch this tool and save the new BIOS le to your USB ash drive,
oppy disk or hard drive, then you can update your BIOS only in a few clicks without
preparing an additional oppy diskette or other complicated ash utility. Please be
noted that the USB ash drive or hard drive must use FAT32/16/12 le system.
English
6 7
1.4 Motherboard Layout
ATXPWR1
30. 5cm (12 .0 in)
X550_LAN1
DDR4_B1 (64 bit, 288-pin module), Blue
DDR4_B2 (64 bit, 288-pin module), White
DDR4_A1 (64 bit, 288-pin module), Blue
DDR4_A2 (64 bit, 288-pin module), White
DDR4_C2 (64 bit, 288-pin module), White
DDR4_C1 (64 bit, 288-pin module), Blue
DDR4_D2 (64 bit, 288-pin module). White
DDR4_D1 (64 bit, 288-pin module), Blue
Top:
LINE IN
Cente r:
FRONT
Botto m:
MIC IN
AUDIO 1
PCIE4
PCIE6
PCIE7
PCIE5
RoHS
PCIE3
PCIE2
1
IPMB_1
USB 3.1 G en1
T: USB1
B: USB2
PS2
Keyb oard
/Mous e
USB 3.1 Gen2
T: USB31_TA_1
B: USB31_TC_1
T: VGA1
B(L): UID1
B(R) :
Optical SPDIF
X550_LAN2
X399D8A-2T
1
PSU_SMB1
ATX12V2
ATX12V1
USB3_6_7
AMD
X399
SATA3_4
SATA3_5
SATA3_8
SATA3_9
SATA3_0_3
USB_1_2
1
HDLED RESET
PLED PWRBTN
PANEL1
1
1
AUX_PANEL1
SATA3_6
SATA3_7
(Red)
(Red)
NUT30
NUT42NUT60NUT80
M2_1
NUT110
1
TPMS1
COM1
1
BUZZER1
1
T 1
R
SATAPWR1
1
SATAPWR2
1
1
SPEAKER1
CMOS
Battery
Dr.
Debug
FAN3
FAN4
FAN5
FAN6
NUT110_2
M2_2
NUT30_2NUT42_2NUT60_2
NUT80_2
HD_AUDIO1
1
BMC
ROM
FAN1
FAN2
24.4cm (9.6 in)
CHASSIS_ID2
1
CHASSIS_ID1
1
CHASSIS_ID3
1
1
BMC_SMB_1
USB3_5
NMI_BTN1
1
X550-AT2
AST2500
BIOS
ROM
Super
I/O
1
2
3
4
5
6
8
9
7
10
11
12
13
14
15
16
17
18
19
20
21
22
23
2425262728
293031
32
333435373839
41
42
36
43
40
VGA2
1
44
(NCSI)
X399D8A-2T
English
English
No. Description
1 2 x 288-pin DDR4 DIMM Slots (DDR4_C2, DDR4_D2, White)
2 2 x 288-pin DDR4 DIMM Slots (DDR4_C1, DDR4_D1, Blue)
3 ATX 12V Power Connector (ATX12V2)
4 ATX 12V Power Connector (ATX12V1)
5 ATX Power Connector (ATXPWR1)
6 PSU SMBus (PSU_SMB1)
7 AMD Socket TR4 4094P
8 CPU Fan Connector (FAN1)
9 System Fan Connector (FAN2)
10 2 x 288-pin DDR4 DIMM Slots (DDR4_ A2, DDR4_B2, White)
11 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1, Blue)
12 USB 3.1 Gen1 Header (USB3_6_7)
13 M.2 Socket (M2_1) (Type 2230/2242/2260/2280/22110)
14 SATA3 Connector (SATA3_9)
15 SATA3 Connector (SATA3_8)
16 SATA3 Connector (SATA3_5)
17 SATA3 Connector (SATA3_4)
18 System Fan Connector (FAN4)
19 MINI-SAS HD Connector (SATA3_0_3)
20 USB 2.0 Header (USB_1_2)
21 System Fan Connector (FAN6)
22 Vertica l Type A USB 3.1 Gen1 (USB3_5)
23 System Panel Header (PANEL1)
24 Auxiliary Panel Header (AUX_PANEL1)
25 System Fan Connector (FAN5)
26 System Fan Connector (FAN3)
27 SATA3 DOM Connector (SATA3_6), Red
28 SATA3 DOM Connector (SATA3_7), Red
29 ermal Sensor Header (TR1)
30 SATA DOM Power Jumper (SATAPWR1)
31 SATA DOM Power Jumper (SATAPWR2)
32 Clear CMOS Pad (CLR MOS1)
33 TPM Header (TPMS1)
8 9
No. Description
34 COM Port Header (COM1)
35 M.2 Socket (M2_2) (Type 2230/2242/2260/2280/22110)
36 Intelligent Platform Management Bus header (IPMB_1)
37 BMC SMBus Header (BMC_SMB_1)
38 Chassis ID3 Jumper (CHASSIS_ID3)
39 Chassis ID2 Jumper (CHASSIS_ID2)
40 Non Maskable Interrupt Button (NMI_BTN1)
41 Front Panel Audio Header (HD_AUDIO1)
42 Chassis ID1 Jumper (CHASSIS_ID1)
43 Speaker Header (SPEAKER1)
44
Front VGA Header (VGA2)
*For DIMM in stallation and conguration instructions, ple ase see p.22 (Installation of Memory Modules
(DIMM)) for more detail s.
X399D8A-2T
English
1.5 Onboard LED Indicators
ATXPWR1
DDR4_B1 (64 bit, 288-pin module), Blue
DDR4_B2 (64 bit, 288-pin module), White
DDR4_A1 (64 bit, 288-pin module), Blue
DDR4_A2 (64 bit, 288-pin module), White
DDR4_C2 (64 bit, 288-pin module), White
DDR4_C1 (64 bit, 288-pin module), Blue
DDR4_D2 (64 bit, 288-pin module). White
DDR4_D1 (64 bit, 288-pin module), Blue
PCIE4
PCIE6
PCIE7
PCIE5
RoHS
PCIE3
PCIE2
1
X399D8A-2T
AMD
X399
1
HDLED RESET
PLED PWRBTN
1
1
(Red)
(Red)
NUT30
NUT42NUT60NUT80
M2_1
NUT110
1
1
1
1
1
1
FAN3
FAN4
FAN5
FAN6
NUT110_2
M2_2
NUT30_2NUT42_2NUT60_2
NUT80_2
1
FAN1
FAN2
111
1
1
1
2
3
4
5
6
7
8
No. Status Description
1 Amber FA N1 fa iled
2 Amber FA N2 fa iled
3 Amber FA N3 fa iled
English
4 Amber FA N4 fa ile d
5 Amber FA N5 fa iled
6 Amber FAN6 failed
7 Green STB PWR ready
8 Green BMC heartbeat LED
10 11
1.6 I/O Panel
8
11
X399D8A-2T
3
1
No. Description No. Description
1 UID Switch (UID1) 8 LAN RJ-45 Port (IPMI_LAN)**
2 Optical SPDIF Out Port 9 Line In (Light Blue)
3 VGA Por t ( VGA1) 10 Front Speaker (Lime)
4 USB 3.1 Gen1 Ports (USB3_1_2) 11 Microphone (Pink)
5 PS/2 Mouse/Keyboard Port 12 LAN RJ-45 Port (LAN1)*
6 USB 3.1 Gen2 Port (USB31_TC_1) 13 LAN RJ-45 Port (LAN2)*
7 USB 3.1 Gen2 Port (USB31_TA_1)
LAN Port LED Indications
*ere are two LED next to the LAN port. Please refer to the table below for the LAN port
LED indications.
2
5
4
7
6
ACT/LINK LED
SPEED LED
10
9
12
13
LAN Por t
Dedicated IPMI LAN Port LED Indications
Activity / Link LED Speed LED
Status Description Status Description
O No Link O 10M bps connection or no
Blinking Yellow Data Activity Yello w 100M bps connection
On Link Green 1G bps connection
link
English
**ere are two LEDs on each LAN port. Please refer to the table below for the LAN port
LED indications.
ACT/LINK LE D
SPEED LE D
LAN Port
10G LAN Port (LAN1, LAN2) LED Indications
Activity / Link LED Speed LED
Status Description Status Description
O No Link O 100Mbps connection or
no link
Blinking Green Data Activity Yellow 1Gbps connection
On Link Green 10Gbps connection
English
12 13
1.7 Block Diagram
X399D8A-2T
SLOT3 x8
SLOT4 x8
SLOT2 x16
SLOT6 x16
10GbE
MUX
SLOT4 x8
B
A
DDR4
DDR4
AMD Ryzen™
DDR4
DDR4
E
D
PCIe3.0x8
PCIe3.0x16
Threadripper™
PCIe3.0x16
4094P
Processor
TR4 series
CPU Socket
PCIe3.0x8
PCIe3.0x8
MUX
X550
PCIe3.0x4
TDP: max. 250W
892
ALC
2xUSB3.0
VGA header
COM header
RTL
8211E
RGMII
VGA
PCIe
MAC
UART
MAC
10GbE
NCSI
-AT2
2xUSB3.0
SPI
ASPEED
AST2500
LPC
USB
TPM
2x USB2.0
LPC/eSPI
NCT6779D
PCIe3.0x4
OCULink (BOM option of eserved)
BIOS
Switch
PCIe2.0 x1
DMI3.0
x4
PCIe3.0x4
MUX
1x SATAI II
MUX
IPMI
Type-C
Type-A
SLOT7 x4
PCIe2.0x4
2xUSB3.1 Gen2
1xUSB3.1 Gen1(Type-A)
X399
AMD
7x SATAIII
PCIe2.0 x1
2xUSB2.0
ASM
1061
SLOT5 x8
SLOT4 x16
PS2
KB/MS
English
Chapter 2 Installation
is is an ATX form factor (12” x 9.6”, 30.5 cm x 24.4 cm) motherboard. Before you install
the motherboard, study the conguration of your chassis to ensure that the motherboard
ts into it.
Make sure to unplug the power c ord before installing or re moving the mothe rboard. Failure
to do so may cause physical injurie s to you and d amages to motherboard components.
2.1 Screw Holes
Place screws into the holes indicated by circles to secure the motherboard to the chassis.
Attention! Before installing this moth erboard, be sure to unscrew and remove the stando
at the marked location, under the motherboard, from the chassis, in order to avoid elec trical shor t circuit and damage to your motherboard.
Remove the standoff
from the chassis
Rear I/O
English
14 15
X399D8A-2T
2.2 Pre-installation Precautions
Take note of the following precautions before you install motherboard components or
change any motherboard settings.
1. Unplug the power cord from the wall socket before touching any components.
2. To avoid damaging the motherboard ’s components due to static electricity, NEVER
place your motherboard directly on the carpet or the like. Also remember to use a
grounded wrist strap or touch a safety grounded object before you handle the compo-
nents.
3. Hold components by the edges and do not touch the ICs.
4. Whenever you uninstall any component, place it on a grounded anti-static pad or in
the bag that comes with the component.
5. When placing screws into the screw holes to secure the motherboard to the chassis,
please do not over-tighten the screws! Doing so may damage the motherboard.
Do not over-tighten the screws! Doing so may damage the motherboard.
Before you install or remove any component, ensure that the power is switched o or the
power cord is detached f rom the power supply. Failure to d o so may cau se severe damage to
the motherboard, peripherals, and/or components.
English
2.3 Installing the CPU and Heatsink
Unplug all power cables be fore installing the CPU.
1
2
English
16 17
X399D8A-2T
3
4
English
5
Carrier Fram e with CPU
Rail Frame
Please mak e sure that the carrier
frame with CPU is closely attached to
the rail fra me while inser ting it.
English
Install the orange carrier frame with CPU. Don’t separate them.
6
18 19
X399D8A-2T
7
8
English
2.4 Installing the CPU Cooler
Aer you install the CPU into this motherboard, it is necessary to install a larger
heatsink and cooling fan to dissipate heat. You also need to spray thermal grease
between the CPU and the heatsink to improve heat dissipation. Ma ke sure that the
CPU and the heatsink are securely fastened and in good contact with each other.
Please turn o the power or remove th e power cord before changing a CPU or heatsink .
1
English
20 21
X399D8A-2T
2
B
C
D
A
3
1
N
A
F
_
U
P
C
English
4
1
AN
F
_
U
P
C
U
S
B
_
5
English
22 23
X399D8A-2T
2.5 Installation of Memory Modules (DIMM)
is motherboard provides eight 288-pin DDR4 (Double Data Rate 4) DIMM slots in two
groups, and supports Quad Channel Memory Technology.
A single memory module should be installed in the Blue socket.
CPU1
A1 A2 B1 B2 C1 C2 D1 D2
1 DIMM
2 DIMMS
4 DIMMS
8 DIMMS
Dual Channel Memory Conguration
#
# #
# # # #
# # # # # # # #
Priority DDR4_A1 DDR4_B1 DDR4_C1 DDR4_D1
1 Populated Populated
2 Populated Populated
1. It is not allowed to install a DDR, DDR 2 or DDR3 memory module into a DDR4 slot;
otherwise , this motherboard and DIM M may be damaged.
2. For dual channel conguration, you always need to install identic al (the same brand,
speed , size and chip-type) DDR4 DIMM pairs.
3. It is unable to activate Dual Channel Memor y Technology with only one or three memor y
module installed.
4. Some DDR4 1GB double-sided DIM Ms with 16 chips may not work on this motherboard.
It is not recommended to install them on this motherboard.
English
1
2
3
English
e DIMM only ts in one correct orientation. It will cause permanent dam age to the
motherboard and the DIMM if you force the DIMM into the slot at incorrect orientation.
24 25
2.6 Expansion Slots (PCI Express Slots)
ere are 6 PCI Express slots on this motherboard.
X399D8A-2T
PCIE slot:
PCIE2, PCIE4 and PCIE6 (PCIE 3.0 x16 slot, from CPU) are used for PCI Express x16 lane
width graphics cards.
PCIE3 and PCIE5 (PCIE 3.0 x16 slot, from CPU) are used for PCI Express x8 lane width
graphics cards.
PCIE7 (PCIE 2.0 x4 slot, from PCH) is used for PCI Express x4 lane width graphics cards.
Slot Generation Mechnical Eletrical Source
PCIE 2 3.0 x16 x16 CPU
PCIE 3 3.0 x16 x8 CPU
PCIE 4 3.0 x16 x16 CPU
PCIE 5 3.0 x16 x8 CPU
PCIE 6 3.0 x16 x16 CPU
PCIE 7 2.0 x4 x4 PCH
PCI Express Slot Conguration
No. PCIE 3 PCIE 2
Single Graphics Card x16
Two Graphics Cards x8 x8
No. PCIE 5 PCIE 4
Single Graphics Card x16
Two Graphics Cards x8 x8
Installing an expansion card
Step 1. Before installing an expansion card, please make sure that the power
supply is switched o or the power cord is unplugged. Please read the
documentation of the expansion card and make necessary hardware
settings for the card before you start the installation.
Step 2. Remove the system unit cover (if your motherboard is already installed
in a chassis).
Step 3. Remove the bracket facing the slot that you intend to use. Keep the
screws for later use.
Step 4. Align the card connector with the slot and press rmly until the card is
completely seated on the slot.
Step 5. Fasten the card to the chassis with screws.
Step 6. Replace the system cover.
English
2.7 Jumper Setup
e illustration shows how jumpers are setup. When the jumper cap is placed on
the pins, the jumper is “Short”. If no jumper cap is placed on the pins, the jumper
is “Open”. e illustration shows a 3-pin jumper whose pin1 and pin2 are “Short”
when a jumper cap is placed on these 2 pins.
SATA DOM Power Jumper
(3-pin SATA PWR1)
(see p.7, No. 30)
SATA DOM Power Jumper
(3-pin SATAPW R2)
(see p.7, No. 31)
SATA DOM (SATA_6)
requires 5V power supply
SATA DOM (SATA_7)
requires 5V power supply
SATA DOM (SATA_6) does
NOT require 5V power sup-
ply (Default)
SATA DOM (SATA_7) does
NOT require 5V power sup-
ply (Default)
Consult the documentation that comes with your SATA DOM and check whether or not
Pin 7 requires 5V power supply.
If the connected SATA DOM requires 5V power supply, move the jumper c aps placed on the
SATA DOM Power Jumper (SATAPWR1/SATAPWR 2) from pins 2-3 (default) to pins 1-2.
If the connected SATA DOM does NOT require 5V powe r supply, connect the SATA DOM
power cable to the SATA DOM power header (SATAPWR1) and there is no need to change
the default jumper setting of the SATA DOM Power Jumpe r (pins 2-3).
Warning! Incorrec t setting of the SATA DOM Power Jumper (SATAPWR1/SATAPWR2)
English
may cause damage to the motherboard or your SATA DOM.
26 27
Chassis ID1 Jumper
(3-p in CH ASSI S _ ID1)
(see p.7, No. 42)
Chassis ID2 Jumper
(3-pin CHAS SI S _ID 2)
(see p.7, No. 39)
Chassis ID3 Jumper
(3-pin CHAS SI S _ID3)
(see p.7, No. 38)
Chassis ID1 Jumper
(3-p in CH ASSI S _ ID1)
(see p.7, No. 42)
Chassis ID2 Jumper
(3-pin CHAS SI S _ID 2)
(see p.7, No. 39)
Chassis ID3 Jumper
(3-pin CHAS SI S _ID3)
(see p.7, No. 38)
Board Level SKU (Default) Reserved for system level
use
Reserved for system level
use
Reserved for system level
use
X399D8A-2T
Chassis ID1 Jumper
(3-p in CH ASSI S _ ID1)
(see p.7, No. 42)
Chassis ID2 Jumper
(3-pin CHAS SI S _ID 2)
(see p.7, No. 39)
Chassis ID3 Jumper
(3-pin CHAS SI S _ID3)
(see p.7, No. 38)
Chassis ID1 Jumper
(3-p in CH ASSI S _ ID1)
(see p.7, No. 42)
Chassis ID2 Jumper
(3-pin CHAS SI S _ID 2)
(see p.7, No. 39)
Chassis ID3 Jumper
(3-pin CHAS SI S _ID3)
(see p.7, No. 38)
Reserved for system level
use
Reserved for system level
use
Reserved for system level
use
English
Reserved for system level
use
2.8 Onboard Headers and Connectors
Onboard headers and connectors are NOT jumpers. Do NOT place jumper caps over these
heade rs and connectors. Placing jumper caps over the headers and connectors will cause
permanent damage to the motherboard.
System Panel Header
(9-pi n PANEL1)
(see p.7, No. 23)
PWRBTN (Power Switch):
Connec t to the power switch on the chassi s front panel. You may congure the way to tur n
o your system using the power switch.
RESET (Reset Switch):
Connec t to the reset switch on the chassi s front panel. P ress the reset sw itch to restart the
computer if the computer f reezes and fails to perform a normal restar t.
PLED (Syste m Power LED):
Connec t to the power status indicator on the chassis front panel. e LED i s on when the
system is operating. e LED keeps blinking when the system is in S1/S3 sleep state. e
LED is o when the system is in S4 sleep state or powered o (S5).
HDLED (Ha rd Drive Activity LED):
Connec t to the hard drive ac tivity LED on the chassis front panel. e LED is on when the
hard drive is reading or wr iting data.
e front panel de sign may dier by chassis. A front pane l module mainly consists of power
switch, reset switch , power LED, hard dr ive activity LED, speaker and etc. When connecting your ch assi s front panel module to thi s header, make sure the wire a ssignments and the
pin assignments are matched correctly.
1
PLED+
PLED-
HDLED-
HDLED+
PWRBTN#
GND
GND
RESET#
GND
Co n nec t t h e pow er swit ch,
reset switch and system status
ind icat or on t h e cha s sis to
th is he ader ac cordi ng to t he
pin assign ment s be low. Not e
the positive and negative pins
before connecting the cables.
English
28 29
X399D8A-2T
Auxiliary Panel Header
(18-pin AUX PANEL1)
(see p.7, No. 24
A. Front panel SMBus connecting pin (6-1 pin FPSMB)
is hea der allows you to connec t SMBus (System Management Bus) equipment. It can
be used for communication between peripheral equipment in the system, which ha s slower
transmission rates, and power manage ment equipment.
B. Internet status indicator (2-pin LAN1_ LED, LAN2_LED)
ese two 2-pin headers allow you to use the Gigabit internet indicator cable to connect
to the LAN statu s indicator. When this indicator ickers, it mean s that the internet is properly connected.
C. Cha ssis intrusion pin (2-pin CHASSIS)
is hea der is p rovided for host computer chassis with chassis intrusion detection designs.
In addition, it mu st also work with e xternal detection equipment, such as a chassi s intrusion detection sensor or a microswitch. When this function is activated, if any cha ssis
component movement occ urs, the sensor will immediately detect it and send a signal to this
heade r, and the system will then record this chassis intrusion event . e default setting is
set to the CASEOPEN and GND pin; this function i s o.
D. Locator LED (6-pin LOCATOR)
is hea der is for the locator sw itch and L ED on the front pane l.
A
B
is header supports multiple
functions on the front panel,
SMB _Al ert
SMB _CL K
1
+5V SB
CAS EOP EN
C
LAN 1_L INK
LED _PW R
LED _PW R
+3V SB
GND
SMB _DA TA
LAN 2_L INK
including the front panel SMB,
internet status indicator and
chassis intrusion pin.
GND
GND
LOC ATORB TN#
LOC ATORL ED1 -
LOC ATORL ED1 +
LOC ATORL ED2 -
LOC ATORL ED2 +
D
Serial ATA3 Connectors
(SATA3_4)
(see p.7, No. 17)
(SATA3_ 5)
(see p.7, No. 16)
(SATA3_ 8)
(see p.7, No. 15)
(SATA3_9)
(see p.7, No. 14)
ese four SATA3 connectors
support SATA data cables for
TA3_9
SA
interna l storage dev ic es w ith
SATA 3_8
up to 6.0 G b/s d ata t r a n sfe r
rate.
SATA 3_5
TA3_4
SA
English
Serial ATA3 DOM
USB_PWR
IntA_PA_D+
Connectors
(SATA3_ 6)
(see p.7, No. 27)
(SATA3_7)
(see p.7, No. 28)
SATA3_6
(Red )
(Red )
SATA3_7
e SATA3 DOM connectors
support both a SATA DOM
(Disk-On-Module) and a SATA
data cable for internal storage
device.
English
Mini-SAS HD Connector
(SATA 3_0_ 3)
(see p.7, No. 19)
USB 3.1 Gen1 Connector
(USB3_5)
(see p.7, No. 22)
USB 2.0 Header
(9-pin USB_1_2)
(see p.7, No. 20)
USB 3.1 Gen1 Header
(19-pin USB3_6_7)
(see p.7, No. 12)
1
Dummy
1
USB_PWR
IntA_PA_D-
GND
IntA_PA_SSTX+
GND
IntA_PB_D-
IntA_PB_D+
SA TA 3_0_3
P-
P+
GND
DUMMY
GND
P+
P-
IntA_PA_SSTX-
GND
IntA_PA_SSRX+
IntA_PA_SSRX-
IntA_PB_SSRX+
GND
IntA_PB_SSTX-
IntA_PBA_SSTX+
Vbus
Vbus
IntA_PB_SSRX-
e connector supports
MiniSAS-to-SATA
data cables for internal
storage devices with up
to 6.0 Gb/s data transfer
rate.
is is one header on
this motherboard. Each
USB 2.0 header can
support two ports.
Be sid e s t wo de fau l t US B 3.1
Gen1 por ts on the I/O panel,
the re is o ne USB 3.1 Gen 1
header on this motherboard.
Ea c h USB 3.1 G en1 h eade r
can support two USB 3.1 Gen1
ports.
30 31
Front Panel Audio Header
(9-pin HD_ AUDIO1)
(see p.7, No. 41)
1. High Denition Audio supports Jack Sensing, but the panel wire on the chass is mus t
suppor t HDA to function correctly. Please follow the instruction in our manual and chassis
manual to install your system.
2. If you use AC’97 audio panel , please install it to the front panel audio header as below:
A. Connect Mic_IN (MIC) to MIC2_ L.
B. Conne ct Audio_R (RIN) to OUT2_R and Audio_ L (LIN) to OUT2_ L.
C. Connect Ground (GND) to Ground (GND).
D. MIC_ RET and OUT_RET are for HD audio panel only. You don’t need to connect them
for AC’97 audio panel.
1
GND
PRESENCE#
MIC2_R
MIC2_L
MIC_RET
J_SENSE
OUT2_R
OUT_RET
OUT2_L
X399D8A-2T
is is an interface for the
front panel audio cable that
allows convenient connection
and control of audio devices.
Chassis Speaker Header
(4-p i n SPEAKER1)
(see p.7, No. 43)
Baseboard Management
Controller SMBus Header
(5-pin BMC_SMB _1)
(see p.7, No. 37)
DUMMY
1
+5V
Power
BMC_SMBCLK
GND
BMC_SMBDATA
SPEAKER
DUMMY
BMC_SMB_PRESENT_1_N
Please connect the chassis
speaker to this header.
e header is used for the SM
BUS devices.
English
System Fan Connectors
4 3 2 1
PWROK_PS
(4- pi n FAN2)
(see p.7, No. 9)
(4- pi n FAN3)
(see p.7, No. 26)
(4- pi n FAN4)
(see p.7, No. 18)
(4- pi n FAN5)
(see p.7, No. 25)
(4-pin FAN6)
(see p.7, No. 21)
GND
FAN_VOLTAGE
FAN_SPEED
FAN_SPEED_CONTROL
Please connect the fan cables to
the fan connectors and match
the black wire to the ground
pin. All fans supports Fan
Control.
English
CPU Fan Connector
(4-p i n FAN1)
(see p.7, No. 8)
ATX Power Connector
(24-p i n ATX PWR1)
(see p.7, No. 5)
FAN _SPEED_ CONTROL
GND
3V
3V
13
3V
-12V
GND
4 3 2 1
GND
FAN_VOLTAGE
CPU_FAN_SPEED
GND
GND
5V
5V
PSON#
GND
GND
GND
Please connect the CPU fan
cable to the connector and
match the black wire to the
ground pin.
ough this motherboard
provides a 4-Pin CPU fan
(Quiet Fan) connector, 3-Pin
CPU fans can still work
successfully even without the
fan speed control function.
If you plan to connect a
3-Pin CPU fan to the CPU
fan connector on this
motherboard, please connect
it to Pin 1-3.
For more details , please refer to the
*
Cooler QVL list on the ASRock Rack
website.
5VSB
12V
N/A
is motherboard provides a
12V
3V
24-pin ATX power connector.
121
To use a 20-pin ATX power
supply, please plug it along Pin
24
5V5V5V
GND
1 and Pin 13.
32 33
X399D8A-2T
ALERT
No connect
ATX 12V Power
Connectors
(8-pin ATX12V1)
(see p.7, No. 4)
(8-pin ATX12V2)
(see p.7, No. 3)
TPM Header
(17-pi n TP MS1)
(see p.7, No. 33)
PSU SMBus
(P SU_ SMB1)
(see p.7, No. 6)
Non Maskable Interrupt
Button Header
(N MI_BT N1)
(see p.7, No. 40)
GND
1
5
GND
LAD 0
+3V SB
D
GN
GND
SER IR Q#
S_P WR DW N#
SMBCLK
1
SMBDATA
1
CONTROL
12V
+3V
LAD 1
GND
LAD 2
GND
4
LAD 3
PCI RS T#
SMB _D AT A_M AI N
+3V
is motherboard provides
two 8-pin ATX 12V power
8
connectors.
K
is connector supports
Trusted Platform Module
LFR AM E#
PCI CL
(TPM) system, which can
1
securely store keys, digital
certicates, passwords, and
D
data. A TPM system also helps
GN
enhance network security,
protects digital identities, and
SMB _C LK _MA IN
ensures platform integrity.
PSU SMBus monitors the
status of the power supply, fan
and system temperature.
Please con nect a NMI dev ic e
to this header.
Intelligent Platform
Management Bus header
(4-pin IPMB_1)
(see p.7, No. 36)
GND
IPMB_SCL
IPMB_SDA
This 4-pin connector is used
to provide a cabled base-board
or front panel connection for
value added features and 3rd-
party add-in cards, such as
Emergency Management cards,
that provide management
features using the IPMB.
English
ermal Sensor Header
(3-pin TR1)
(see p.7, No. 29)
Serial Port Header
(9-p in CO M1)
(see p.7, No. 34)
TR1 TR1
1
RRXD1
1
DDCD#1
GND
DDTR#1
DDSR#1
GND
TTXD1
CCTS#1
RRI#1
RRTS#1
Please connect the thermal
sensor cable to either pin 1-2
or pin 2-3 and the other end to
the device which you wish to
monitor its temperature.
is COM header supports a
serial port module.
English
Clear CMOS Pad
(CLRMO S1)
(see p.7, No. 32)
Front VGA Header
(10-pin VGA 2)
(see p.7, No. 44)
RED
GRE EN
BLU E
HSY NC
DDC CL K_C
is allows you to clear the
data in CMOS. To clear CMOS,
take out the CMOS battery and
short the Clear CMOS Pad.
1
GND
GND
GND
VSY NC
DDC DA T_C
Please connect either end
of VGA_2X5 cable to VGA
header.
34 35
2.9 Unit Identication purpose LED/Switch
With the UID button, You are able to locate the server you’re working on from behind
a rack of servers.
X399D8A-2T
Unit Identication
purpose LED/Switch
(U ID1)
When the UID button on the
front or rear panel is pressed,
the front/rear UID blue LED
indicator will be turned on.
Press the UID button again to
turn o the indicator.
2.10 Driver Installation Guide
To install the drivers to your system, please insert the support CD to your optical
drive rst. en, the drivers compatible to your system can be auto-detected and listed
on the support CD driver page. Please follow the order from top to bottom to install
those required drivers. erefore, the drivers you install can work properly.
English
2.11 M.2_SSD (NGFF) Module Installation Guide
e M.2, also known as the Next Generation Form Factor (NGFF), is a small size and
versatile card edge connector that aims to replace mPCIe and mSATA. e M.2 Socket
supports M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x4 (16 Gb/s).
Installing the M.2_SSD (NGFF) Module
Step 1
Prepare a M.2_SSD (NGFF) module
and the screw.
English
5
4
3
Step 2
Depending on the PCB type and
length of your M.2_SSD (NGFF)
module, nd the corresponding nut
location to be used.
2
1
A
BCDE
No. 1 2 3 4 5
Nut Location A B C D E
PCB Length 3cm 4.2cm 6cm 8cm 11cm
Module Type Ty pe2 230 Type 22 42 Typ e2260 Ty pe 228 0 Ty pe 22 110
36 37
X399D8A-2T
Step 3
Move the stando based on the
module type and length.
e stando is placed at the nut
A
BCDE
A
BCDE
ABCDE
location E by default. Skip Step 3 and
4 and go straight to Step 5 if you are
going to use the default nut.
Otherwise, release the stando by
hand.
Step 4
Peel o the yellow protective lm on
the nut to be used. Hand tighten the
stando into the desired nut location
on the motherboard.
Step 5
Gently insert the M.2 (NGFF) SSD
module into the M.2 slot. Please
be aware that the M.2 (NGFF) SSD
module only ts in one orientation.
o
ABCDE
20
English
Step 6
Tighten the screw with a screwdriver
to secure the module into place.
Please do not overtighten the screw as
this might damage the module.
NUT1NUT2DE
English
38 39
X399D8A-2T
Chapter 3 UEFI Setup Utility
3.1 Introduction
is section explains how to use the UEFI SETUP UTILITY to con gure your system. e
UEFI chip on the motherboard stores the UEFI SETUP UTILITY. You may run the UEFI
SETUP UTILITY when you start up the computer. Please press <F2> or <Del> during the
Power-On-Self-Test (POST) to enter the UEFI SETUP UTILITY; otherw ise, POST will
continue with its test routines.
If you wish to enter the UEFI SETUP UTILITY a er POST, restart the system by pressing
<Ctrl> + <Alt> + <Delete>, or by pressing the reset button on the system chassis. You may
also restart by turning the system o and then back on.
Becau se the UEFI so ware is constantly being updated, the following UEFI setup sc reens
and descriptions are for reference purpose only, and they may not ex actly match what you
see on your screen .
3.1.1 UEFI Menu Bar
e top of the screen has a menu bar with the following selections:
Item Description
Main To set up the system time/date information
OC Tw ea k er For overclocking con gurations
Advanced To set up the advanced UEFI features
Server Mgmt To manage the server
Security To set up the security features
Boot
Exit To exit the current screen or the UEFI SETUP UTILITY
Use < > key or < > key to choose among the selections on the menu bar, and
then press <Enter> to get into the sub screen.
To set up the default system device to locate and load the
Operating System
English
3.1.2 Navigation Keys
Please check the following table for the function description of each navigation key.
Navigation Key(s) Function Description
/ Moves cursor le or right to select Screens
/ Moves cursor up or down to select items
+ / - To change option for the selected items
<Ta b> Switch to next function
<Enter> To bring up the selected screen
<PGUP> Go to the previous page
<PGDN> Go to the next page
<HOME> Go to the top of the screen
<END> Go to the bottom of the screen
<F1> To display the General Help Screen
<F7> Discard changes and exit the UEFI SETUP UTILITY
<F9> Load optimal default values for all the settings
<F10> Save changes and exit the UEFI SETUP UTILITY
<F12> Print screen
<ESC> Jump to the Exit Screen or exit the current screen
English
40 41
X399D8A-2T
3.2 Main Screen
Once you enter the UEFI SETUP UTILITY, the Main screen will appear and display the
system over view. e Main screen provides system over view information and allows you
to set the system time and date.
English
3.3 OC Tweaker
In the OC Tweaker screen, you can set up overclocking features.
Becau se the UEFI soware is constantly being upd ated, the following UEFI setup screens
and descriptions are for reference purpose only, and they may not ex actly match what you
see on your screen .
CPU Conguration
Spread Spectrum
Pcie Pll SSC percentage or Disable SSC. Range is 0.0%-1.9%(Enable is 0.5%). Last
once is the POR for LBG.
CPU Frequency and Voltage Change
If Manua l, multiplier and voltage will be set based on user selection. Final result is
depending on CPU’s capability.
English
SMT Mode
is item can be used to disable symmetric multithreading. To re-enable SMT, a
POWER CYCLE is needed aer selecting the ‘Auto’ option. WARNING - S3 is
42 43
NOT SUPPORTED on systems where SMT is disabled.
Precision Boost Overdrive
Precision Boost Overdrive:
Disabled: Stock board values for standard IR M.
Enabled: Loads board limits for EDC, TDC and PPT.
Manual: Manual setting of PPT, TDC and EDC.
Performance Bias
You can congure the settings of Performance Bias.
DRAM Timing Conguration
DRAM Frequency
If [Auto] is selected, the motherboard will detect the memory module(s) inserted
and assign the appropriate frequency automatically.
DRAM Timing Conguration
You can congure DRAM Timing.
X399D8A-2T
Primary Timing
CAS# Latency (tCL)
e time between sending a column address to the memory and the beginning of
the data in response.
RAS# to CAS# Delay to Read (tRC
e number of clock cycles required between the opening of a row of memory and
accessing columns within it.
RAS# to CAS# Delay to Write (tRC
e number of clock cycles required between the opening of a row of memory and
accessing columns within it.
Row Precharge Time (tRP)
e number of clock cycles required between the issuing of the precharge command
and opening the next row.
RAS# Active Time (tRAS)
e number of clock cycles required between a bank active command and issuing
English
the precharge command.
Secondary Timing
Fail Count
e number of training failure/retries required before boot from recovery mode.
RAS# Cycle Time (tRC)
e number of memory clock cycles from and activate command to another activate
command.
RAS to RAS Delay (tRRD_S)
e number of clock clocks between two rows activated in dierent banks of the
same rank.
RAS to RAS Delay (tRRD_L)
e number of clock clocks between two rows activated in dierent banks of the
same rank.
Four Activate Window (tFAW)
e time window in which four activates are allowed the same rank.
Write to Read Delay (tWTR_S)
e number of clocks between the last valid write operation and the next read com-
mand to the same internal bank.
Write to Read Delay (tWTR_L)
e number of clocks between the last valid write operation and the next read com-
mand to the same internal bank.
Write Recovery Time (tWR)
e amount of delay that must elapse aer the completion of a valid write opera-
tion, before an active bank can be precharged.
Trcpage (tMAW,MAC)
e minimum average time in memory clock cycles within a refresh window from
an activate command to another activate command.
English
TrdrdScL
e minimum number of cycles from the last clock of virtual CAS of the rst read-
burst operation to the clock in which CAS is asserted for a following read-burst
operation in the same chipselect in the same bank group.
44 45
TwrwrScL
e minimum number of cycles from the last clock of virtual CAS of the rst write-
burst operation to the clock in which CAS is asserted for a following write-burst
operation in the same chipselect in the same bank group.
Refresh Cycle Time (tRFC)
Congure the Refresh command period.
Refresh Cycle Time 2 (tRFC2)
e x2 Fine Granularity Refresh mode Refresh command period.
Refresh Cycle Time 4 (tRFC4)
e x4 Fine Granularity Refresh mode Refresh command period.
CAS Write Latency (tCWL)
Congure CAS Write Latency.
Read to Precharge (tRTP)
e number of clocks that are inserted between a read command to a row pre-charge
command to the same rank.
Trdwr
e minimum number of cycles from the last clock of virtual CAS of the rst read-
burst operation to the clock in which CAS is asserted for a following write-burst
oepration.
X399D8A-2T
Twrr d
e minimum number of cycles from the last clock of virtual CAS of the rst write-
burst operation to the clock in which CAS is asserted for a following write-burst
oepration.
TwrwrSc
e minimum number of cycles from the last clock of virtual CAS of the rst write-
burst operation to the clock in which CAS is asserted for a following write-burst
oepration in the same chipselect.
TwrwrSd
e minimum number of cycles from the last clock of virtual CAS of the rst write-
burst operation to the clock in which CAS is asserted for a following write-burst
oepration in the same DIMM.
English
TwrwrDd
e minimum number of cycles from the last clock of virtual CAS of the rst write-
burst operation to the clock in which CAS is asserted for a following write-burst
oepration in a dierent DIMM.
TrdrdSc
e minimum number of cycles from the last clock of virtual CAS of the rst read-
burst operation to the clock in which CAS is asserted for a following read-burst
oepration in the same chipselect.
TrdrdSd
e minimum number of cycles from the last clock of virtual CAS of the rst read-
burst operation to the clock in which CAS is asserted for a following read-burst
oepration in the same DIMM.
TrdrdDd
e minimum number of cycles from the last clock of virtual CAS of the rst read-
burst operation to the clock in which CAS is asserted for a following read-burst
oepration in a dierent DIMM.
tCKE
Species the CKE minimum high and low pulse width in memory clock cycles.
Proc0DT
Species the Processor 0DT.
Data Bus Congutaion
Data Bus Conguration.
RttNom
Congure RttNom
RttWr
Congure RttWr
RttPark
English
Congure RttPark
Command Rate (CR)#1
Change Command Rate(CR) Setting.
46 47
Gear Down Mode
Congure Gear Down Mode
Power Down Enable
Enable or disable DDR4 power down mode.
CAD Bus Congutaion
CAD Bus Conguration.
CAD Bus Timing User Controls
Setup time on CAD bus signals to Auto or Manual.
CAD Bus Drive Strength User Controls
Drive Strength on CAD bus signals to Auto or Manual.
TR4 Advance Boot Training
Congure TR4 Advance Boot Training.
Voltage Conguration
CPU Vcore Voltage
X399D8A-2T
Input voltage for the processor by the external voltage regulator.
CPU Load-Line Calibration Level 5
FFSGUID:0951C12E-7D7E-49c9-93AA-593E8135904A
VDDCR_SOC Voltage
Input voltage for the processor by the external voltage regulator.
VDDCR_SOC Load-Line Calibration Level
VDDCR_SOC Load-Line Calibration helps prevent VDDCR_SOC voltage droop
when the system is under heavy load.
DRAM_AB Voltage
Congure the voltage for the DRAM _AB.
DRAM_CD Voltage
Congure the voltage for the DRAM _AB.
English
VPPM
Congure the voltage for the VPPM
VPPM_CD
Congure the voltage for the VPPM_CD.
VDDCR_SOC_S5
Congure the voltage for the VDDCR_SOC_S5.
1.05V
Congure the voltage for the 1.05V_PROM Voltage.
+1.8 Voltage
Congure the voltage for the +1.8 Voltage.
+1.8 STB Voltage
Congure the voltage for the +1.8 STB Voltage.
2.50V_PROM Voltage
Congure the voltage for the 2.50V_PROM Voltage.
English
48 49
X399D8A-2T
3.4 Advanced Screen
In this section, you may set the congurations for the following items: CPU Conguration,
Chipset Conguration, Storage Conguration, ACPI Conguration, Super IO Congura-
tion, Serial Port Console Redirection, H/W Monitor, AMD CBS, AMD PBS and Instant
Flash.
Setting wrong values in this sec tion may cause the system to malfunction.
English
3.4.1 CPU Conguration
AMD fTPM Switch
To select .0: Auto (Depend on Tcg module). 1: Disabled fTPM. 2: OnBoard SPI TPM2.0
SVM Mode
Enable/disable CPU Virtualization.
English
50 51
3.4.2 Chipset Conguration
IOMMU
To enable or disable IOMMU.
X399D8A-2T
SR-IOV Support
If system has SR-IOV capable PCIe Devices, this option Enables or Disables Single Root IO
Virtualization Support.
Primary Graphics Adapter
Select a primary VGA.
Onboard VGA
To enable or disable Onboard VGA.
Onboard X550 LAN1
To enable or disable Onabord LAN.
Onboard X550 LAN2
To enable or disable Onabord LAN.
Onboard HD Audio
Enable/disable onboard HD audio. Set to Auto to enable onboard HD audio and
English
automatically disable it when a sound card is installed.
Front Panel
Use this item to select Front Panel Type.
PS2 Y- Cable
Enable the PS2 Y-Cable or set this option to Auto.
Restore AC Power Loss
is allows you to set the power state aer a power failure. If [Power O] is selected, the
power will remain o when the power recovers. If [Power On] is selected, the system will
start to boot up when the power recovers.
Restore AC Power Current State
is allows you to restore AC Power Current State.
Onboard Debug Port LED
Enable or disable the onboard Dr. Debug LED.
English
52 53
3.4.3 Storage Conguration
SATA Controller(s)
Use this item to enable or disable SATA Controllers.
X399D8A-2T
SATA M o de
Identify the SATA port is connected to Solid State Drive or Hard Disk Drive.
Press <Ctrl+I> to enter RAID ROM during UEFI POST process.
SATA Hot Plug
Enable/disable the SATA Hot Plug Function.
SATA Hot Plug (ASM1601)
SATA Hot Plug (ASM1061 SATA_8/9) Enable/Disable Control.
English
3.4.4 ACPI Conguration
PS/2 Keyboard S4/S5 Wakeup Support
Allow the system to be waked up by a PS/2 Keyboard.
PCIE Devices Power On
Allow the system to be waked up by a PCIE device and enable wake on LAN.
RTC Alarm Power On
Use this item to enable or disable RTC (Real Time Clock) to power on the system.
English
54 55
3.4.5 Super IO Conguration
Serial Port 1 Conguration
Use this item to set parameters of Serial Port 1 (COM1).
X399D8A-2T
Serial Port
Use this item to enable or disable the serial port.
Serial Port Address
Use this item to select an optimal setting for Super IO device.
SOL Conguration
Use this item to set parameters of SOL.
SOL Port
Use this item to set parameters of SOL.
Serial Port Address
Use this item to select an optimal setting for Super IO device.
English
3.4.6 Serial Port Console Redirection
COM1 / SOL
Console Redirection
Use this option to enable or disable Console Redirection. If this item is set to Enabled, you
can select a COM Port to be used for Console Redirection.
Console Redirection Settings
Use this option to congure Console Redirection Settings, and specify how your computer
and the host computer to which you are connected exchange information.
Terminal Type
Use this item to select the preferred terminal emulation type for out-of-band management.
It is recommended to select [VT-UTF8].
Option Description
VT10 0 ASCII character set
English
56 57
VT10 0+ Extended VT100 that supports color and function keys
VT-U TF8 UTF8 encoding is used to map Unicode chars onto 1 or more bytes
ANSI Extended ASCII character set
X399D8A-2T
Bits Per Second
Use this item to select the serial por t transmission speed. The speed used in the host
computer and the client computer must be the same. Long or noisy lines may require lower
transmission speed. e options include [9600], [19200], [57600] and [115200].
Data Bits
Use this item to set the data transmission size. e options include [7] and [8] (Bits).
Parity
Use this item to select the parity bit. e options include [None], [Even], [Odd], [Mark] and
[Space].
Stop Bits
e item indicates the end of a serial data packet. e standard setting is [1] Stop Bit. Select
[2] Stop Bits for slower devices.
Flow Control
Use this item to set t he f low control to prevent data loss from buf fer overflow. When
sending data, if the receiving buers are full, a "stop" signal can be sent to stop the data
ow. Once the buers are empty, a "start" signal can be sent to restart the ow. Hardware
ow uses two wires to send start/stop signals. e options include [None] and [Hardware
RTS/CTS].
VT-UTF8 Combo Key Support
Use this item to enable or disable the VT-UTF8 Combo Key Support for ANSI/VT100
terminals.
Recorder Mode
Use this item to enable or disable Recorder Mode to capture terminal data and send it as
text messages.
Resolution 100x31
Use this item to enable or disable extended terminal resolution support.
Legacy OS Redirection Resolution
Use this item to select the number of rows and columns used in legacy OS redirection.
Putty Keypad
Use this item to select Function Key and Keypad on Putty.
Legacy Console Redirection
Legacy Console Redirection Settings
Use this option to congure Legacy Console Redirection Settings, and specify how your
computer and the host computer to which you are connected exchange information.
Redirection COM Port
Select a COM port to display redirection of Legacy OS and Legacy OPROM Messages.
English
Resolution
On Legacy OS, the Number of Rows and Columns supported redirection.
Redirect Aer POST
When Bootloader is selected, then Legacy Console Redirection is disabled before booting
to legacy OS. When Always Enable is selected, then Legacy Console Redirection is enabled
for legacy OS. Default setting for this option is set to Always Enable.
Serial Port for Out-of-Band Management/Windows Emergency
Management Services (EMS)
Console Redirection
Use this option to enable or disable Console Redirection. If this item is set to Enabled, you
can select a COM Port to be used for Console Redirection.
Console Redirection Settings
Use this option to congure Console Redirection Settings, and specify how your computer
and the host computer to which you are connected exchange information.
Out-of-Band Mgmt Port
Microso Windows Emergency Management Services (EMS) allows for remote
management of a Windows Ser ver OS through a serial port.
Terminal Type
Use this item to select the preferred terminal emulation type for out-of-band management.
It is recommended to select [VT-UTF8].
Option Description
VT10 0 ASCII character set
VT10 0+ Extended VT100 that supports color and function keys
VT-U TF8 UTF8 encoding is used to map Unicode chars onto 1 or more bytes
ANSI Extended ASCII character set
Bits Per Second
Use this item to selec t the serial port transmission speed. The speed used in the host
computer and the client computer must be the same. Long or noisy lines may require lower
transmission speed. e options include [9600], [19200], [57600] and [115200].
Flow Control
English
Use this item to set the flow control to prevent data loss from buffer overflow. When
sending data, if the receiving buers are full, a "stop" signal can be sent to stop the data
ow. Once the buers are empty, a "start" signal can be sent to restart the ow. Hardware
ow uses two wires to send start/stop signals. e options include [None], [Hardware RTS/
CTS], and [Soware Xon/Xo].
58 59
Data Bits
Parity
Stop Bits
X399D8A-2T
English
3.4.7 H/W Monitor
In this section, it allows you to monitor the status of the hardware on your system, includ-
ing the parameters of t he CPU temperature, motherboard temperature, CPU fan speed,
chassis fan speed, and the critical voltage.
Fan Control
If [Auto] is selected, the fan speed will controlled by BMC.
If [Manual] is selected, congure the items below.
FAN1
Fan Speed Control
FAN2
Fan Speed Control
FAN3
Fan Speed Control
English
FAN4
Fan Speed Control
FAN5
Fan Speed Control
60 61
FAN6
Fan Speed Control
Smart Fan Control
is allows you to set the Smart fan’s level speed.
Smart Fan Duty Control
Smart Fan Duty x (x means 1 to 11 stage)
is allows you to set duty cycle for each stage.
Smart Fan Temp Control
Smart Fan Temp x (x means 1 to 11 stage)
is allows you to set temperature for each stage.
X399D8A-2T
English
3.4.8 AMD CBS
Zen Common Options
Use this item to congure Zen Common options.
DF Common Options
Use this item to congure DF Common options.
UMC Common Options
Use this item to congure UMC Common options.
NBIO Common Options
Use this item to congure NBIO Common options.
FCH Common Options
Use this item to congure FCH Common options.
XGBE Conguration Options
English
Use this item to congure XGBE Conguration options.
62 63
3.4.9 AMD PBS
AMD Firmware Version
Show all of AMD Firmware Version.
X399D8A-2T
VR Cong
Show all of VR cong les' version information.
PCIe x16 Switch
Congure the PCIe x16 Switch.
Promontory PCIe Switch
Congure the Promontory PCIe Switch.
NVMe RAID mode
Congure the NVMe RAID mode.
PCIe Slot2/3 Conguration
Congure the PCIe slots.
PCIe Slot4/5 Conguration
Congure the PCIe slots.
English
3.4.10 Instant Flash
Instant Flash is a UEFI ash utility embedded in Flash ROM. is convenient UEFI
update tool allows you to update system UEFI without entering operating systems
rst like MS-DOS or Windows®. Just save the new UEFI le to your USB ash drive,
oppy disk or hard drive and launch this tool, then you can update your UEFI only
in a few clicks without preparing an additional oppy diskette or other compli-
cated ash utility. Please be noted that the USB ash drive or hard drive must use
FAT32/16/12 le system. If you execute Instant Flash utility, the utility will show the
UEFI les and their respective information. Select the proper UEFI le to update
your UEFI, and reboot your system aer the UEFI update process is completed.
English
64 65
X399D8A-2T
3.5 Server Mgmt
Wait For BMC
Wai t Fo r BM C re sponse for s pec i f ied t ime o ut . BMC star t s at the same t i me when
BIOS starts during AC power ON. It takes around 90 seconds to initialize Host to BMC
interfaces.
English
3.5.1 System Event Log
SEL Components
Change this to enable ro disable event logging for error/progress codes during boot.
Erase SEL
Use this to choose options for earsing SEL.
When SEL is Full
Use this to choose options for reactions to a full SEL .
Log EFI Status Codes
Use this item to disable the logging of EFI Status Codes or log only error code or only
progress code or both.
English
66 67
3.5.2 BMC Network Conguration
BMC Out of Band Access
Enabled/Disabled BMC Out of band Access.
X399D8A-2T
Lan Channel (Failover)
Manual Setting IPMI LAN
If [No] is selected, t he IP address is assigned by DHCP. If you prefer using a static IP
address, toggle to [Yes], and the changes take eect aer the system reboots. e default
value is [No].
Conguration Address Source
Select to congure BMC network parameters statically or dynamically(by BIOS or BMC).
Conguration options: [Static] and [DHCP].
Static: Manually enter the IP Address, Subnet Mask and Gateway Address in the BIOS for
BMC LAN channel conguration.
DHCP: IP address, Subnet Mask and Gateway Address are automatically assigned by the
network 's DHCP server.
When [DHCP] or [Static] is selected , do NOT modify the BMC network settings on the
IPMI web page.
English
e default login information for the IPMI web interface is:
Username: admin
Password: admin
For more instructions on how to set up remote control environment and u se the IPMI management platform, please refer to the IPMI Conguration User Guide or go to the Support
website at: http://www.asrockrack.com/support/faq.asp
VLAN
Enabled/Disabled Virtual Local Area Network.
If [Enabled] is selected, congure the items below.
VLAN ID
Use this item to congure VLAN ID setting.
VLAN Priority
Use this item to congure VLAN Priority setting.
English
68 69
X399D8A-2T
3.6 Security
In this section, you may set or change the supervisor/user password for the system. For the
user password, you may also clear it.
Supervisor Password
Set or change the password for the administrator account. Only the administrator
has authority to change the settings in the UEFI Setup Utility. Leave it blank and
press enter to remove the password.
User Password
Set or change the password for the user account. Users are unable to change the
settings in the UEFI Setup Utility. Leave it blank and press enter to remove the
password.
Secure Boot
Use this to enable or disable Secure Boot Control. e default value is [Disabled].
Enable to support Windows Server 2012 R2 or later versions Secure Boot.
English
3.7 Boot Screen
In this section, it will display the available devices on your system for you to congure the
boot settings and the boot priority.
Boot Option #1
Use this item to set the system boot order.
Boot Option #2
Use this item to set the system boot order.
Boot Option #3
Use this item to set the system boot order.
Boot Option Filter
is option controls Legacy/UEFI ROMs priority.
USB Device BBS Priorities
is page will show only when system install USB Storage.
English
Above 4G Decoding
Enable or disable 64bit capable Devices to be decoded in Above 4G Address Space (only if
the system supports 64 bit PCI decoding).
70 71
X399D8A-2T
Boot From Onboard LAN(X550)
Use this item to enable or disable the Boot From Onboard LAN feature.
Setup Prompt Timeout
Congure the number of seconds to wait for the UEFI setup utility.
Bootup Num-Lock
If this item is set to [On], it will automatically activate the Numeric Lock function aer
boot-up.
Boot Beep
Select whether the Boot Beep should be turned on or o when the system boots up. Please
note that a buzzer is needed.
Full Screen Logo
Use this item to enable or disable OEM Logo. e default value is [Enabled].
AddOn ROM Display
Use this option to adjust AddOn ROM Display. If you enable the option “Full Screen Logo”
but you want to see the AddOn ROM information when the system boots, please select
[Enabled]. Conguration options: [Enabled] and [Disabled]. e default value is [Enabled].
English
3.7.1 CSM Parameters
CSM
Enable to launch the Compatibility Support Module. Please do not disable unless
you’re running a WHCK test. If you are using Windows Server 2012 R2 or later ver-
sions 64-bit UEFI and all of your devices support UEFI, you may also disable CSM
for faster boot speed.
Launch Other Storage OpROM Policy
Select UEFI only to run those that support UEFI option ROM only. Select Legacy only to
run those that support legacy option ROM only. Select Do not launch to not execute both
legacy and UEFI option ROM.
Launch Video OpROM Policy
Select UEFI only to run those that support UEFI option ROM only. Select Legacy only to
run those that support legacy option ROM only. Select Do not launch to not execute both
legacy and UEFI option ROM.
English
PCIE2 Slot OpROM
To select Slot Storage and Network Option ROM policy. In Auto option, the default is Dis-
abled with NVMe device, but it is Legacy with other devices. (is item can’t select Video
Option ROM policy.)
72 73
X399D8A-2T
PCIE3 Slot OpROM
To select Slot Storage and Network Option ROM policy. In Auto option, the default is Dis-
abled with NVMe device, but it is Legacy with other devices. (is item can’t select Video
Option ROM policy.)
PCIE4 Slot OpROM
To select Slot Storage and Network Option ROM policy. In Auto option, the default is Dis-
abled with NVMe device, but it is Legacy with other devices. (is item can’t select Video
Option ROM policy.)
PCIE5 Slot OpROM
To select Slot Storage and Network Option ROM policy. In Auto option, the default is Dis-
abled with NVMe device, but it is Legacy with other devices. (is item can’t select Video
Option ROM policy.)
PCIE6 Slot OpROM
To select Slot Storage and Network Option ROM policy. In Auto option, the default is Dis-
abled with NVMe device, but it is Legacy with other devices. (is item can’t select Video
Option ROM policy.)
PCIE7 Slot OpROM
To select Slot Storage and Network Option ROM policy. In Auto option, the default is Dis-
abled with NVMe device, but it is Legacy with other devices. (is item can’t select Video
Option ROM policy.)
English
3.8 Exit Screen
Save Changes and Exit
When you select this option, the following message “Save conguration changes and exit
setup?” will pop-out. Press <F10> key or select [Yes] to save the changes and exit the UEFI
SETUP UTILITY.
Discard Changes and Exit
When you select this option, the following message “Discard changes and exit setup?” will
pop-out. Press <ESC> key or select [Yes] to exit the UEFI SETUP UTILITY without saving
any changes.
Discard Changes
When you select this option, the following message “Discard changes?” will pop-out. Press
<F7> key or select [Yes] to discard all changes.
Load UEFI Defaults
Load UEFI default values for a ll the setup questions. F9 key can be used for this operation.
English
74 75
X399D8A-2T
Chapter 4 Software Support
4.1 Install Operating System
is motherboard supports various Microso® Windows® / Linux compliant. Because
motherboard settings and hardware options vary, use the setup procedures in this chapter
for general reference only. Refer to your OS documentation for more information.
*Please download the Intel® SATA Floppy Image driver from the ASRock R ack’s website (www.asrockrack.com)
to your USB drive or simply install the SATA driver from the Support CD while installing OS in SATA RAID
mode.
4.2 Support CD Information
e Support CD that came with the motherboard contains necessary drivers and useful
utilities that enhance the motherboard’s features.
4.2.1 Running The Support CD
To be g in usi n g t he su ppor t C D, i n s ert the C D i nto y our CD -ROM driv e. The CD
automatically displays the Main Menu if “AUTORUN” is enabled in your computer. If the
Main Menu does not appear automatically, locate and double click on the le “ASRSetup.
exe” from the root folder in the Support CD to display the menu.
4.2.2 Drivers Menu
The Drivers Menu shows the available device’s drivers if the system detects installed
devices. Please insta ll the necessary drivers to activate the devices.
4.2.3 Utilities Menu
e Utilities Menu shows the application sowares that the motherboard supports. Click
on a specic item then follow the installation wizard to install it.
4.2.4 Contact Information
If you need to contact ASRock Rack or want to know more about ASRock Rack, welcome
to visit ASRock Rack’s website at http://www.ASRockRack.com; or you may contact your
dealer for further information.
English
Chapter 5 Troubleshooting
5.1 Troubleshooting Procedures
Follow the procedures below to troubleshoot your system.
Always unplug the power cord before adding, removing or changing any hardware component s. Failure to do so may cause physical injurie s to you and damage s to motherboard
components.
1. Disconnect the power cable and check whether the PWR LED is o.
2. Unplug all cables, connectors and remove all add-on cards from the motherboard.
Make sure that the jumpers are set to default settings.
3. Conrm that there are no short circuits between the motherboard and the chassis.
4. Install a CPU and fan on the motherboard, then connect the chassis speaker and power
LED.
If there is no power...
1. Conrm that there are no short circuits between the motherboard and the chassis.
2. Make sure that the jumpers are set to default settings.
3. Check the settings of the 115V/230V switch on the power supply.
4. Verify if the battery on the motherboard provides ~3VDC. Install a new batter y if it
does not.
If there is no video...
1. Try replugging the monitor cables and power cord.
2. Check for memory errors.
If there are memory errors...
1. Verify that the DIMM modules are properly seated in the slots.
2. Use recommended DDR4 ECC U-DIMMs.
3. If you have installed more than one DIMM modules, they should be identical with the
same brand, speed, size and chip-type.
English
4. Try inserting dierent DIMM modules into dierent slots to identif y fault y ones.
5. Check the settings of the 115V/230V switch on the power supply.
76 77
Unable to save system setup congurations...
1. Verify if the battery on the motherboard provides ~3VDC. Install a new batter y if it
does not.
2. Conrm whether your power supply provides adaquate and stable power.
Other problems...
1. Try searching keywords related to your problem on ASRock Rack’s FAQ page:
http://www.asrockrack.com/support
X399D8A-2T
English
5.2 Technical Support Procedures
If you have tried the troubleshooting procedures mentioned above and the problems
are still u nsolved, please contact ASRock Rack ’s technica l suppor t with the followi ng
information:
1. Your contact information
2. Model name, BIOS version and problem type.
3. System conguration.
4. Problem description.
You may contact ASRock Rack’s technical support at:
http://www.asrockrack.com/support/tsd.asp
5.3 Returning Merchandise for Service
For w arr ant y ser vice, t he receipt or a co py of your i nvoice marked w it h t he d at e of
purchase is required. By calling your vendor or going to our RMA website (http://event.
asrockrack.com/tsd.asp) you may obtain a Returned Merchandise Authorization (RMA)
number.
The R MA number should be displayed on the outside of the shipping car ton which is
mailed prepaid or hand-carried when you return the motherboard to the manufacturer.
Shipping and handling charges will be applied for all orders that must be mailed when
service is complete.
Th is wa rranty does not c over d a mages i ncu rred in shippi ng or from fa i lu re due to
alteration, misuse, abuse or improper maintenance of products.
Contact your distributor rst for any product related problems during the warranty period.
English
78 PB
Loading...