ASROCK B550D4ID-2L2T User manual

B550D4ID-2L2T
User Manual
Version 1.0
Published June 2021
Copyright©2021 ASRock Rack INC. All rights reserved.

Version 1.0
Published June 2021
Copyright©2021 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
identication or explanation and to the owners’ benet, without intent to infringe.
Disclaimer:
Specications 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, ocers, employees, or agents be liable for
any indirect, special, incidental, or consequential damages (including damages for loss of
prots, 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 www.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.)
e terms HDMI®and HDMI High-Denition Multimedia Interface, and the HDMI
logo are trademarks or registered trademarks of HDMI Licensing LLC in the United
States and other countries.

Contents
Chapter 1 Introduction 1
1.1 Package Contents 1
1.2 Specications 2
1.3 Unique Features 5
1.4 Motherboard Layout 6
1.5 Onboard LED Indicators 8
1.6 I/O Panel 10
1.7 Block Diagram 12
Chapter 2 Installation 13
2.1 Screw Holes 13
2.2 Pre-installation Precautions 13
2.3 Installing the CPU 14
2.4 Installing the CPU Fan and Heatsink 15
2.5 Installing Memory Modules (DIMM) 16
2.6 Expansion Slot (PCI Express Slot) 18
2.7 Onboard Headers and Connectors 19
2.8 ATX PSU / DC-IN Power Connections 24
2.9 Unit Identication purpose LED/Switch 25
2.10 Driver Installation Guide 25
2.11 M.2_SSD (NGFF) Module Installation Guide (M2_1) 26
Chapter 3 UEFI Setup Utility 27
3.1 Introduction 27
3.1.1 UEFI Menu Bar 27

3.1.2 Navigation Keys 28
3.2 Main Screen 29
3.3 Advanced Screen 30
3.3.1 CPU Conguration 31
3.3.2 Chipset Conguration 32
3.3.3 Storage Conguration 33
3.3.4 ACPI Conguration 34
3.3.5 USB Conguration 35
3.3.6 Super IO Conguration 36
3.3.7 Serial Port Console Redirection 37
3.3.8 H/W Monitor 40
3.3.9 RAM Disk Conguration 41
3.3.10 Tls Auth Conguration 42
3.3.11 AMD PBS 43
3.3.12 AMD Overclocking 46
3.3.13 AMD CBS 47
3.3.14 Instant Flash 48
3.4 Server Mgmt 49
3.4.1 System Event Log 50
3.4.2 BMC Network Conguration 51
3.4.3 BMC Tools 53
3.5 Security 54
3.5.1 Key Management 55
3.6 Boot Screen 58

3.6.1 CSM Parameters 60
3.7 Exit Screen 61
Chapter 4 Software Support 62
4.1 Install Operating System 62
4.2 Support CD Information 62
4.2.1 Running The Support CD 62
4.2.2 Drivers Menu 62
4.2.3 Utilities Menu 62
4.2.4 Contact Information 62
Chapter 5 Troubleshooting 63
5.1 Troubleshooting Procedures 63
5.2 Technical Support Procedures 65
5.3 Returning Merchandise for Service 65

B550D4ID-2L2T
PB 1
English
Chapter 1 Introduction
ank you for purchasing ASRock Rack B550D4ID-2L2T 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.
1.1 Package Contents
• ASRock Rack B550D4ID-2L2T Motherboard
(Deep mini-ITX Form Factor: 6.7-in x 8.2-in, 17.0 cm x 20.8 cm)
• Quick Installation Guide
• 1 x I/O Shield
• 1 x Oculink to 4 SATA Cable (60cm)
• 1 x ATX 4P to 24P Power Cable (8cm)
• 1 x SATA Power Cable (80cm)
• 1 x Screw for M.2 Socket
If any items are missing or appear damaged, contact your authorized dealer.
Because the motherboard specications and the BIOS soware might be updated, the con-
tent of this manual will be subject to change without notice. In case any modications of
this manual occur, the updated version will be available on ASRock Rack website without
further notice. You may nd the latest memory and CPU support lists on ASRock Rack
website as well. ASRock Rack’s Website: www.ASRockRack.com
If you require technical support related to this motherboard, please visit our website for
specic information about the model you are using.
http://www.asrockrack.com/support/

2 3
English
1.2 Specications
B550D4ID-2L2T
MB Physical Status
Form Factor Deep mini-ITX
Dimension 6.7'' x 8.2'' (17.0 cm x 20.8 cm)
Processor System
CPU AMD Ryzen™ 5000 Series Desktop Processors
AMD Ryzen™ 4000 G-Series Desktop Processors with Radeon™
Graphics
AMD Ryzen™ PRO 4000 and 3000 Series Desktop Processors
3rd Gen AMD Ryzen™ Desktop Processors
*Not Compatible with AMD Ryzen™ 3000 series processors with Radeon™
Graphics
Socket AM4 PGA 1331
Chipset AMD B550
Max. ermal
Design Power
TDP 105W
System Memory
Capacity - 4 x 288-pin DDR4 DIMM slots (2DPC)
- Support up to 128GB DDR4 ECC/non-ECC UDIMM
Type - Dual Channel DDR4 memory technology
- Support DDR4 ECC/Non-ECC Unbuered DIMM
*For AMD Ryzen™ Desktop Processors with Radeon™ Graphics, ECC support
is only with Processors with PRO technologies.
DIMM Size Per
DIMM
ECC/UDIMM: 32GB, 16GB, 8GB
DIMM Frequency ECC/UDIMM: up to 3200MHz
Voltage 1.2V
Expansion Slot
PCIe 4.0 x 16 PCIE7: Gen4 x16 link
Storage
SATA Controller AMD B550 (4 SATA 6Gb/s; RAID 0/1/10): 1 OCuLink [FCH]
M.2 Slot 1 (M2_1: M-key (PCIe4.0 x4 or SATA 6Gb/s), supports type
2280 [CPU])
Ethernet
Interface 10000/1000 /100 Mbps

B550D4ID-2L2T
2 3
English
LAN Controller - 2 x RJ45 10G base-T by Intel® X710-AT2
- 2 x RJ45 1G RJ45 by Intel® i210
- 1 x RJ45 Dedicated IPMI LAN port by RTL8211E
- Supports Wake-On-LAN
- Supports Energy Ecient Ethernet 802.3az
- Supports Dual LAN with Teaming function
- Supports PXE
- LAN3 supports NCSI
Management
BMC Controller ASPEED AST2500
IPMI Dedicated
GLAN
1 x Realtek RTL8211E for dedicated management GLAN
Features Watch Dog
Graphics
Controller ASPEED AST2500
VRAM DDR4 16MB
Rear Panel I/O
VGA Port 1 x D-Sub (DB15)
USB 3.2 (Gen1) Port 2
HDMI 1
LAN Port - 2 x RJ45 10 Gigabit Ethernet LAN port
- 2 x RJ45 1 Gigabit Ethernet LAN ports
- 1 x RJ45 Dedicated IPMI LAN port
- LAN Ports with LED (ACT/LINK LED and SPEED LED)
UID 1
UID LED 1
Internal Connector
Auxiliary Panel
Header
1 (includes chassis intrusion, location button & LED, front
LAN LED, system fault, and BMC alert)
Panel Header 1
COM Header 1
TPM Header 1 (13-pin SPI TPM header, supports TPM 2.0)
TPM_BIOS_PH1 1
IPMB Header 1
Fan Header 3 (4-pin)
ATX Power 2 x (8-pin)
USB 3.2 Gen1
Header
1 (supports 2 USB 3.2 Gen1 ports)
NCSI1 1
SPEAKER 1
TR1 1
OCulink 1 (SATA only)
Clear CMOS 1 (short pad)
OH/FanFail LED 3

4 5
English
System BIOS
BIOS Ty pe 32MB AMI UEFI Legal BIOS
BIOS Features - Plug and Play (PnP)
- ACPI 2.0 Compliance Wake Up Events
- SMBIOS 2.8 Support
- ASRock Rack Instant Flash
Hardware Monitor
Temperature - CPU/DDR/FCH Temperature Sensing
- MB/Card Side Temperature Sensing
Fan - Fan Tachometer
- Quiet Fan (Allow Chassis Fan Speed Auto-Adjust by CPU
Temperature)
- Fan Multi-Speed Control
Voltage Voltage Monitoring: 3VSB, 5VSB, VCPU, VSOC, VCCM, APU
VDDP, 1.05V_PROM_S5, 2.5V_PROM, 1.05V_PROM_RUN,
BAT, 3V, 5V, 12V
Support OS
OS Microso® Windows®:
- Windows 10 (64 bit)
Linux®:
- RedHat Enterprise Linux Server 8.2 (64 bit)
- CentOs 8.2 (64 bit)
Hypervisor:
- VMWare ESXi 7.0 U2
- vSphere 7.0 U2
* On the Windows 10 system, Raid Mode supports UEFI Boot only.
* e Linux system doesn’t support Raid mode.
* Please refer to our website for the latest OS support list.
Environment
Temperature Operation temperature: 10°C ~ 35°C / Non operation
temperature: -40°C ~ 70°C
NOTE: Please refer to our website for the latest specications.
is motherboard supports Wake from on Board LAN. To use this function, please make
sure that the “Wake on Magic Packet 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 > Advanced > ACPI Conguration. Aer that, onboard
LAN can wake up S5 under OS.
If you install Intel® LAN utility or Marvell SATA utility, this motherboard may fail Win-
dows® Hardware Quality Lab (WHQL) certication tests. If you install the drivers only, it
will pass the WHQL tests.

B550D4ID-2L2T
4 5
English
1.3 Unique Features
ASRock Rack Instant Flash is a BIOS ash utility embedded in Flash ROM. is con-
venient BIOS update tool allows you to update system BIOS without entering operat-
ing systems rst like MS-DOS or 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.

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English
1.4 Motherboard Layout
20.8cm (8.2 in)
17.0cm (6.7 in)
NCSI1 BAT1
SATA_PWR1
ATX12V1ATX12V2
PSU_SMB1
ATX4PIN1
LED_LAN_3_4
(FOR HDD POWER)
FAN1
FAN2
M2_1
TPM1
CLRCMOS1
OCU1
TPM_BIOS_PH1
NUT80_1
USB3_5_6
COM1 ITX_AUX_PANEL1
IPMB1
BMC_SMB1
FAN3
T 1
PWM_CFG1
NUT110_1
RSPEAKER1
PCIE7
ASPEED
AST2500
HDMI1
VGA1
USB 3.2 G en1
T: USB3_2
B: USB3_1
IPMI_LAN
LAN3
LAN4
LAN1
LAN2
UID_LED1
UID1
BMC
ROM
23 14
B550D4ID-2L2T
56
DDR4_B2
DDR4_B1
DDR4_A2
DDR4_A1
8
9
10
11
12
13
14
15
16
17
181920212223
24
25
7

B550D4ID-2L2T
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English
No. Description
1 Front LAN LED Connector (LED_LAN_3_4)
2NCSI Header (NCSI1)
3 SATA Power Connector (DC-IN Mode) (SATA_PWR1)**
4 ATX 12V Power Connector (ATX12V1)
5 ATX 12V Power Connector (ATX12V2)
6 PSU SMBus Header (PSU_SMB1)
7 ATX 12V Power Connector (ATX4PIN1)**
8 System Fan Connector (4-pin) (FAN1)
9 System Fan Connector (4-pin) (FAN2)
10 M.2 Socket (M2_1) (Type 2280)
11 TPM Header (TPM1)
12 Clear CMOS Pad (CLRCMOS1)
13 OCuLink x4 Connector (OCU1)
14 TPM-SPI Header (TPM_BIOS_PH1)
15 USB 3.2 Gen1 Header (USB3_5_6)
16 Intelligent Platform Management Bus Header (IPMB1)
17 BMC SMBus Header (BMC_SMB1)
18 Speaker Header (SPEAKER1)
19 ermal Sensor Header (TR1)
20 System Fan Connector (4-pin) (FAN3)
21 Auxiliary Panel Header (ITX_AUX_PANEL1)
22 COM Port Header (COM1)
23 PWM Conguration Header (PWM_CFG1)
24 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR_B1)*
25 2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR_B2)*
*For DIMM installation and conguration instructions, please see p.20 (Installation of Memory Modules
(DIMM)) for more details.
**Caution: Misconnection between the SATA_PWR1 and the ATX4PIN1 connectors may permanently damage
the motherboard.

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English
1.5 Onboard LED Indicators
1
2
3
4
5
6

B550D4ID-2L2T
8 9
English
No. Item Status Description
1 SB_PWR1 Green STB PWR ready
2FAN_LED1 Amber FAN1 failed
3FAN_LED2 Amber FAN2 failed
4FAN_LED3 Amber FAN3 failed
5SYS_FAULT_LED1 Amber System Fault LED
6BMC_LED1 Green BMC heartbeat LED

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English
1.6 I/O Panel
9
8
37
5
10
6
4
1 2
No. Description No. Description
1 UID Switch (UID1) 6 1G LAN RJ-45 Port (LAN4)***
2 UID LED (UID_LED1) 7 VGA Port (VGA1)
3 10G LAN RJ-45 Port (LAN1)** 8 HDMI Port (HDMI1)
4 10G LAN RJ-45 Port (LAN2)** 9 USB 3.2 Gen1 Ports (USB3_1_2)
5 1G LAN RJ-45 Port (LAN3)*** 10 LAN RJ-45 Port (IPMI_LAN1)*
*ere are two LED next to the LAN port. Please refer to the table below for the LAN port
LED indications.
Dedicated IPMI LAN Port LED Indications
Activity / Link LED Speed LED
Status Description Status Description
O No Link O 10M bps connection or no
link
Blinking Yellow Data Activity Orange 100M bps connection
On Link Green 1Gbps connection
ACT/LINK LED
SPEED LED
LAN Port

B550D4ID-2L2T
10 11
English
**ere are two LEDs on each LAN port. Please refer to the table below for the LAN port
LED indications.
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 Yellow Data Activity Orange 1Gbps connection
On Link Green 10Gbps connection
***ere are two LEDs on each LAN port. Please refer to the table below for the LAN port
LED indications.
1G LAN Port (LAN3, LAN4) LED Indications
Activity / Link LED Speed LED
Status Description Status Description
O No Link O 10Mbps connection or
no link
Blinking Orange Data Activity Orange 100Mbps connection
On Link Green 1Gbps connection
ACT/LIN K LE D SPEED LED
LAN Port
ACT/LIN K LE D SPEED LED
ACT/LIN K LE D SPEED LED
LAN Port
ACT/LIN K LE D SPEED LED

12 13
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1.7 Block Diagram
AMD PROCESSOR
Socket AM4 (PGA 1331)
Support Max：105 W
AMD
Fusion Control Hub
B550
PC IE 7
Intel
X710-AT2
Intel
i210
Intel
i210
M2_1
P C IE x 1
PC IE x1
USB 2.0
V GA
P C Ie GE N 2 x1
AST2500
BMC
LP C
TPM
D-SUB
SIO
NCT5562D
R GM I I
Realtek
RTL8211E
SA TA x4
2xUSB 3.2
2xUSB 3.2
DDR4 UDIMM 3200MT/s
B550D4ID-2L2T

B550D4ID-2L2T
12 13
English
Chapter 2 Installation
is is a deep mini-ITX form factor (6.7’’ x 8.2’’, 17.0 cm x 20.8 cm)motherboard. Before
you install the motherboard, study the conguration of your chassis to ensure that the
motherboard ts into it.
2.1 Screw Holes
Place screws into the holes indicated by circles to secure the motherboard to the chassis.
Attention! Before installing this motherboard, be sure to unscrew and remove the standos
at the marked location, under the motherboard, from the chassis, in order to avoid electri-
cal short circuit and damage to your motherboard.
Make sure to unplug the power cord before installing or removing the motherboard. Failure
to do so may cause physical injuries to you and damages to motherboard components.
Do not over-tighten the screws! Doing so may damage the motherboard.
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.
Before you install or remove any component, ensure that the power is switched o or the
power cord is detached from the power supply. Failure to do so may cause severe damage to
the motherboard, peripherals, and/or components.

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2.3 Installing the CPU
Unplug all power cables before installing the CPU.
2
1
90o