ASRock Industrial 4X4-7840U-1U User manual

4X4-7840U-1U
4X4-7640U-1U
User Manual
Version 1.0
Published November 1, 2023
Copyright©2023 ASRockInd INC. All rights reserved.

Version 1.0
Published November, 2023
Copyright©2023 ASRockInd 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
ASRockInd 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 ASRockInd. ASRockInd assumes no
responsibility for any errors or omissions that may appear in this documentation.
With respect to the contents of this documentation, ASRockInd 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 ASRockInd, 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 ASRockInd 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.
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.

WARNING
THIS PRODUCT CONTAINS A BUTTOON BATTERY
If swallowed, a button battery can cause serious injury or death.
Please keep batteries out of sight or reach of children.
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”
AUSTRALIA ONLY
Our goods come with guarantees that cannot be excluded under the Australian Consumer
Law. You are entitled to a replacement or refund for a major failure and compensation for
any other reasonably foreseeable loss or damage caused by our goods. You are also entitled
to have the goods repaired or replaced if the goods fail to be of acceptable quality and the
failure does not amount to a major failure. If you require assistance please call ASRockInd
Tel : [phone] ext.123 (Standard International call charges apply)
ASRockInd follows the green design concept to design and manufacture our products,
and makes sure that each stage of the product life cycle of ASRockInd product is in line
with global environmental regulations. In addition, ASRockInd disclose the relevant in-
formation based on regulation requirements.
DO NOT throw the motherboard in municipal waste. is product has been
designed to enable proper reuse of parts and recycling. This symbol of the
crossed out wheeled bin indicates that the product (electrical and electronic
equipment) should not be placed in municipal waste. Check local regulations
for disposal of electronic products.

Contents
Chapter 1 Introduction 1
1.1 Package Contents 1
1.2 Specications 2
1.3 Motherboard Layout 4
1.4 I/O Panel 6
1.5 Block Diagram 7
Chapter 2 Installation 8
2.1 Screw Holes 8
2.2 Pre-installation Precautions 8
2.3 Installation of Memory Modules 9
2.4 Expansion Slots 10
2.5 Onboard Headers and Connectors 11
Chapter 3 UEFI SETUP UTILITY 14
3.1 Introduction 14
3.1.1 Entering BIOS Setup 14
3.1.2 UEFI Menu Bar 15
3.1.3 Navigation Keys 16
3.2 Main Screen (Advanced Mode) 17
3.3 Advanced Screen 18
3.3.1 CPU Conguration 19
3.3.2 Chipset Conguration 20
3.3.3 Storage Conguration 22
3.3.4 Super IO Conguration 23

3.3.5 ACPI Conguration 24
3.3.6 USB Conguration 25
3.3.7 Trusted Computing 26
3.4 Hardware Health Event Monitoring Screen 28
3.5 Security Screen 29
3.6 Boot Screen 30
3.7 Exit Screen 31