ASROCK Rack 1U2N2G Series User manual

1U2N2G Series
User Manual
Version 1.0
Published January 2022
Copyright©2022 ASRock Rack INC. All rights reserved.

Version 1.0
Published November 2022
Copyright©2022 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

Setting up the Server in a Restricted Access Location
• Access can only be gained by service persons or by users who have been instructed
about the reasons for the restrictions applied to the location and about any precautions
that shall be taken.
• Access is through the use of a tool or lock and key, or other means of security, and is
controlled by the authority responsible for the location.
• Leave enough clearance (25 inches in the front and 30 inches in the back of the rack) to
allow the front door to be opened completely and to allow for sucient airow.
• is product is for installation merely in a Restricted Access Location.
• is product is not suitable for use with visual display work place devices according to §2
of the the German Ordinance for Work with Visual Display Units.
Replaceable Batteries
CAUTION
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.
DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS
Warning
When removal of the chassis lid required for servicing:
- Turn o power and unplug any power cords/cables, and
- Reinstall the chassis lid before restoring power.
Important Safety Instructions
Pay close attention to the following safety instructions before performing any of
the operation. Basic safety precautions should be followed to protect yourself from
harm and the product from damage:
• Operation of the product should be carried out by suitably trained, qualied, and
certied personnel only to avoid risk of injury from electrical shock or energy hazard.
• Disconnect the power cord from the wall outlet when installing or removing main
system components, such as the motherboard and power supply unit.
• Place the system on a stable and at surface.
• Use extreme caution when working with high-voltage components.
• When handling parts, use a grounded wrist strap designed to prevent static discharge.
• Keep the area around the system clean and clutter-free.
• Keep all components and printed circuit boards (PCBs) in their antistatic bags when
not in use.
• Handle a board by its edges only; do not touch its components, peripheral chips,
memory modules or contacts.

Contents
Chapter 1 Introduction 1
1.1 Shipping Box Contents 2
1.2 Specications 3
Chapter 2 Server System Overview 4
2.1 System Components 4
2.2 Internal Features 6
2.3 System Front Panel 10
2.4 System Rear Panel 12
2.5 Front Control Panel Buttons and LEDs 13
Chapter 3 Hardware Installation and Maintenance 16
3.1 Server Top Cover 17
3.2 Power Supply 19
3.3 System Fan 21
3.4 Add-on Card (1U2N2G-B550/N only) 23
3.5 Add-on Card (1U2N2G-B550 / 1U2N2G-ROME/2T only) 27
Appendix A 31
Installing the CPU (AM4 PGA 1331 Socket) 31
Installing the CPU (SP3 LGA 4094 Socket) 34
Installation of Memory Modules (DIMM) 38

1U2N2G Series
PB 1
English
Chapter 1 Introduction
ank you for purchasing 1U2N2G Series, a reliable barebone system produced
under our consistently stringent quality control. It delivers excellent performance with
robust design conforming to our commitment to quality and endurance.
is guide provides the instructions of insertion and extraction of chassis
components, such as chassis covers, system fans, power supplies, hard disk drive trays,
and other main components this system supports. If the system is pre-installed a
serverboard, please refer to the user's manual of the serverboard for the information
of the serverboard components, specications and BIOS settings.
e illustrations shown in this manual are for reference purposes only and may not exactly
match the model you purchase.
Because the hardware specications might be updated, the content of this documentation
will be subject to change without notice.
If you require technical support related to this system, please visit our website for specic
information about the model you are using.
http://www.asrockrack.com/support/
System ASRock Rack Server Board
1U2N2G-B550 B550D4ID/CG
1U2N2G-B550/N B550D4ID/CG
1U2N2G-ROME/2T ROMED4ID-2T

2 3
English
1.1 Shipping Box Contents
Item Quantity
B550/N B550 ROME-2T
1U2N2G Barebone (1U form factor) 1 1 1
Power Supply Unit 2 2 2
System Fan 6 8 8
Power Distribution Board (PDB) (1U2N2G_PDB) 1 1 1
System Boards (MB) (per node) 1 1 1
Front Panel Board (FPB) (N19_FB_B) (per node) 1 1 1
Riser Card (1U2G-RB1U2SL-G4) (per node) 1 1 0
Riser Card (1U2SL2PX8) (per node) 1 0 0
Riser Card (1U4G_SL2P_L_RDV) (per node) 0 1 1
1U Cooler (per node) 1 1 1
Accessory Box 111
Slide Rail 1 1 1
If any items are missing or appear damaged, contact your authorized dealer.

1U2N2G Series
2 3
English
1.2 Specications
1U2N2G Series
System Physical Status
Form Factor 1U Rackmount
Dimension
(D x W x H)
650 x 438 x 43.5 mm (25.6'' x 17.2'' x 1.7'')
Support MB Size Deep mini-ITX
Front Panel
Button • Power button
LED • System Fail LED
I/O Ports 1U2N2G-B550/N:
2 x USB 3.2 Gen1 ports
1U2N2G-B550 / 1U2N2G-ROME/2T:
N/A
System Cooling
Fan 1U2N2G-B550/N:
6 x single-roter 40*56 mm fans
1U2N2G-B550 / 1U2N2G-ROME/2T:
8 x dual-rotor 40*56 mm fans
Power Supply
Type 1+1 CRPS
Output Watts 1U2N2G-B550/N: 550W
1U2N2G-B550: 1200W
11U2N2G-ROME/2T: 1600W
Eciency 80-PLUS Platinum
AC Input 1U2N2G-B550/N:100-240V, 50/60Hz
1U2N2G-B550: 100-240V, 50/60Hz
11U2N2G-ROME/2T: 100-240V, 47/63Hz
*Please be noted that the functions are supported depending on the type of the server board.
Please refer to the user manual of the motherboard you use for detailed information about
motherboard components and features.

4 5
English
Chapter 2 Server System Overview
is chapter provides diagrams showing the location of important components of
the server system.
2.1 System Components
1U2N2G-B550/N
3 x System Fans (Node2)
Server Board (Node2)
Front Controls and Indicators (Node1)
2 x Power Supply Units
1 x Full-height, single-width PCIe Card
Server Board (Node1)
Front Controls and Indicators (Node2)
3 x System Fans (Node1)
1 x Low-profile, single-width PCIe Card
1 x Full-height, single-width PCIe Card
1 x Low-profile, single-width PCIe Card
*e illustrations in this User Manual are for references only. e actual product may be slightly dierent by SKU.

1U2N2G Series
4 5
English
1U2N2G-B550 / 1U2N2G-ROME/2T
4 x System Fans (Node2)
Server Board (Node2)
Front Controls and Indicators (Node1)
2 x Power Supply Units
1 x Full-height, double-width PCIe Card
Server Board (Node1)
Front Controls and Indicators (Node2)
4 x System Fans (Node1)
1 x Full-height, double-width PCIe Card
1 x Low-profile, single-width PCIe Card

6 7
English
2.2 Internal Features
1U2N2G-B550/N
12 13
1 4
5
23
6 7 89 10 11
14 15
No. From
1Upper: Full-height, single-width PCIe Card (on the riser card)
Lower: Low-prole, single-width PCIe Card (on the riser card)
2 Power Supply Unit (PSU1)
3 Power Supply Unit (PSU2)
4Upper: Full-height, single-width PCIe Card (on the riser card)
Lower: Low-prole, single-width PCIe Card (on the riser card)
5 Power Distribution Board (PDB)
6 System Fan (FAN1)
7 System Fan (FAN2)
8 System Fan (FAN3)
9 System Fan (FAN4)
10 System Fan (FAN5)

1U2N2G Series
6 7
English
No. From
11 System Fan (FAN6)
12 Serverboard for Node1
13 Serverboard for Node2
14 Front Panel Board (FPB) for Node 1
15 Front Panel Board (FPB) for Node 2

8 9
English
1U2N2G-B550 / 1U2N2G-ROME/2T
14 15
1 4
5
23
6 7 811 12 13
16 17
910
No. From
1 1 x Full-height, double-width PCIe/GPU Card (on the riser card)
2 Power Supply Unit (PSU1)
3 Power Supply Unit (PSU2)
4 1 x Full-height, double-width PCIe/GPU Card (on the riser card)
5 Power Distribution Board (PDB)
6 System Fan (FAN1)
7 System Fan (FAN2)
8 System Fan (FAN3)
9 System Fan (FAN4)
10 System Fan (FAN5)
11 System Fan (FAN6)
12 System Fan (FAN7)

1U2N2G Series
8 9
English
No. From
13 System Fan (FAN8)
14 Serverboard for Node1
15 Serverboard for Node2
16 Front Panel Board (FPB) for Node 1
17 Front Panel Board (FPB) for Node 2

10 11
English
2.3 System Front Panel
1U2N2G-B550/N
12 3 45 6
No. Description
1 I/O Shield for Node1 (depends on the specication of the server board)
2 Front Vent for Node1
3 2 x USB 3.2 Gen1 Ports for Node1
4 I/O Shield for Node2 (depends on the specication of the server board)
5 Front Vent for Node2
6 2 x USB 3.2 Gen1 Ports for Node2
1U2N2G-B550
1234
No. Description
1 I/O Shield for Node1 (depends on the specication of the server board)
2 Front Vent for Node1
3 I/O Shield for Node2 (depends on the specication of the server board)
4 Front Vent for Node2

1U2N2G Series
10 11
English
1U2N2G-ROME/2T
1234
No. Description
1 I/O Shield for Node1 (depends on the specication of the server board)
2 Front Vent for Node1
3 I/O Shield for Node2 (depends on the specication of the server board)
4 Front Vent for Node2

12 13
English
2.4 System Rear Panel
1U2N2G-B550/N
253 4 61
Redundant PSU 1+1:
Only one PSU is allowed to be
removed while the server is running.
No. Description
1 1 x Low-prole, single-width PCIe Card (on the riser card)
2 1 x Full-height, single-width PCIe Card (on the riser card)
3 1 x Power Supply Unit (PSU2)
4 1 x Power Supply Unit (PSU1)
5 1 x Full-height, single-width PCIe Card (on the riser card)
6 1 x Low-prole, single-width PCIe Card (on the riser card)
1U2N2G-B550 / 1U2N2G-ROME/2T
142 3
Redundant PSU 1+1:
Only one PSU is allowed to be
removed while the server is running.
No. Description
1 1 x Full-height, double-width PCIe Card / GPU Card (on the riser card)
2 1 x Power Supply Unit (PSU2)
3 1 x Power Supply Unit (PSU1)
4 1 x Full-height, double-width PCIe Card / GPU Card (on the riser card)

1U2N2G Series
12 13
English
2.5 Front Control Panel Buttons and LEDs
Front Control Panel
1U2N2G-B550/N
13456
2
No. Description
1 UID Button
2 UID LED
3Node Number
4 USB 3.2 Gen1 Ports
5 System Fail LED
6 Power Button
*Please be noted that the functions are supported depending on the type of the server board.

14 15
English
1U2N2G-B550
1345
2
No. Description
1 UID Button
2 UID LED
3Node Number
4 System Fail LED
5 Power Button
*Please be noted that the functions are supported depending on the type of the server board.
1U2N2G-ROME/2T
234
1
No. Description
1 UID Button & LED
2Node Number
3 System Fail LED
4 Power Button
*Please be noted that the functions are supported depending on the type of the server board.

1U2N2G Series
14 15
English
Power Button
Press the power switch button to toggle the system power on and standby/sleep modes.
To remove all power from the system completely, disconnect the power cord from the
server.
UID Button
Press the ID button to toggle the front panel UID LED and the baseboard UID LED on and
o. You are able to locate the server you’re working on from behind a rack of servers.
Status LED Denitions
System Fail LED
Status Description
O Running or normal operation
Red At least one sensor has critical alert
UID LED
Status Description
Blue System identication is active.
O System identication is disabled.

16 17
English
Chapter 3 Hardware Installation and
Maintenance
is chapter helps you assemble the chassis and install components.
Before You Begin
Before you work with the server, pay close attention to the “Important Safety Instructions”
at the beginning of this manual.
1. Make sure the server is powered o.
Power down the server if it is still running.
(1) Press the Power button to power o the server from full-power mode to standby-
power (sleep) mode. e Power LED at the front turns from solid green to blinking
green.
(2) Disconnect the power cord rst from the AC outlet and then from the server.
e power LED turns o.
2. Ensure you have a clean and stable working environment. Avoid dust and dirt because
contaminants may cause malfunctions.
3. Ground yourself properly before touching any system component. A discharge of static
electricity may damage components. Wear a grounded wrist strap if available.
Installing Procedures
e followings are prerequisite to be installed.
• Power Supply Units (Pre-installed)
• System Fans (Pre-installed)
• Server Board (Pre-installed)
• Power Distribution Board (Pre-installed)
• Front Panel Board (Pre-installed)
e server is not completely powered down when you press the Power button on the front
panel. e Power button lets the server toggle between Power On and Standby (Sleep)
modes. Some internal circuitry remain active in the Standby mode. To remove all power
from the system completely, be sure to disconnect the power cord from the server.
1. Some components are already pre-installed. Simply properly connect the required cables before
or aer installation. See the Quick Installation Guide for more details.
2. Refer to the user manual of the server board you use for instructions on how to install server
board components.