Avalue Technology EMX-C246P-B1 User manual

Part No. E2047M24600R
EMX-C246P-B1
Intel® 8/9th Generation Core™ Processor Mini ITX
Motherboard With Intel® C246 Chipset
User’s Manual
1st Ed –10 January 2022

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FCC Statement
THIS DEVICE COMPLIES WITH PART 15 FCC RULES. OPERATION IS
SUBJECT TO THE FOLLOWING TWO CONDITIONS:
(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE.
(2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED INCLUDING
INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.
THIS EQUIPMENT HAS BEEN TESTED AND FOUND TO COMPLY WITH THE LIMITS
FOR A CLASS "A" DIGITAL DEVICE, PURSUANT TO PART 15 OF THE FCC RULES.
THESE LIMITS ARE DESIGNED TO PROVIDE REASONABLE PROTECTION AGAINST
HARMFUL INTERFERENCE WHEN THE EQUIPMENT IS OPERATED IN A
COMMERCIAL ENVIRONMENT. THIS EQUIPMENT GENERATES, USES, AND CAN
RADIATE RADIO FREQUENCY ENERGY AND, IF NOT INSTALLED AND USED IN
ACCORDANCE WITH THE INSTRUCTION MANUAL, MAY CAUSE HARMFUL
INTERFERENCE TO RADIO COMMUNICATIONS.
OPERATION OF THIS EQUIPMENT IN A RESIDENTIAL AREA IS LIKELY TO CAUSE
HARMFUL INTERFERENCE IN WHICH CASE THE USER WILL BE REQUIRED TO
CORRECT THE INTERFERENCE AT HIS OWN EXPENSE.
Notice
This guide is designed for experienced users to setup the system within the shortest time.
For detailed information, please always refer to the electronic user's manual.
Copyright Notice
Copyright 2022 Avalue Technology Inc., ALL RIGHTS RESERVED.
No part of this document may be reproduced, copied, translated, or transmitted in any form
or by any means, electronic or mechanical, for any purpose, without the prior written
permission of the original manufacturer.
Trademark Acknowledgement
Brand and product names are trademarks or registered trademarks of their respective
owners.
Disclaimer
Avalue Technology Inc. reserves the right to make changes, without notice, to any product,
including circuits and/or software described or contained in this manual in order to improve
design and/or performance. Avalue Technology assumes no responsibility or liability for the
use of the described product(s), conveys no license or title under any patent, copyright, or
masks work rights to these products, and makes no representations or warranties that

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these products are free from patent, copyright, or mask work right infringement, unless
otherwise specified. Applications that are described in this manual are for illustration
purposes only. Avalue Technology Inc. makes no representation or warranty that such
application will be suitable for the specified use without further testing or modification.
Life Support Policy
Avalue Technology’s PRODUCTS ARE NOT FOR USE AS CRITICAL COMPONENTS IN
LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE PRIOR WRITTEN APPROVAL
OF Avalue Technology Inc.
As used herein:
1. Life support devices or systems are devices or systems which, (a) are intended for
surgical implant into body, or (b) support or sustain life and whose failure to perform,
when properly used in accordance with instructions for use provided in the labeling, can
be reasonably expected to result in significant injury to the user.
2. A critical component is any component of a life support device or system whose
failure to perform can be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or effectiveness.
A Message to the Customer
Avalue Customer Services
Each and every Avalue’s product is built to the most exacting specifications to ensure
reliable performance in the harsh and demanding conditions typical of industrial
environments. Whether your new Avalue device is destined for the laboratory or the factory
floor, you can be assured that your product will provide the reliability and ease of operation
for which the name Avalue has come to be known.
Your satisfaction is our primary concern. Here is a guide to Avalue’s customer services. To
ensure you get the full benefit of our services, please follow the instructions below carefully.
Technical Support
We want you to get the maximum performance from your products. So if you run into
technical difficulties, we are here to help. For the most frequently asked questions, you can
easily find answers in your product documentation. These answers are normally a lot more
detailed than the ones we can give over the phone. So please consult the user’s manual
first.
To receive the latest version of the user’s manual; please visit our Web site at:
http://www.avalue.com.tw/

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Product Warranty
Avalue warrants to you, the original purchaser, that each of its products will be free from
defects in materials and workmanship for two years from the date of purchase.
This warranty does not apply to any products which have been repaired or altered by
persons other than repair personnel authorized by Avalue, or which have been subject to
misuse, abuse, accident or improper installation. Avalue assumes no liability under the
terms of this warranty as a consequence of such events. Because of Avalue’s high
quality-control standards and rigorous testing, most of our customers never need to use our
repair service. If any of Avalue’s products is defective, it will be repaired or replaced at no
charge during the warranty period. For out-of-warranty repairs, you will be billed according
to the cost of replacement materials, service time, and freight. Please consult your dealer
for more details. If you think you have a defective product, follow these steps:
1. Collect all the information about the problem encountered. (For example,
CPU type and speed, Avalue’s products model name, hardware & BIOS
revision number, other hardware and software used, etc.) Note anything
abnormal and list any on-screen messages you get when the problem occurs.
2. Call your dealer and describe the problem. Please have your manual, product,
and any helpful information available.
3. If your product is diagnosed as defective, obtain an RMA (return material
authorization) number from your dealer. This allows us to process your good
return more quickly.
4. Carefully pack the defective product, a complete Repair and Replacement
Order Card and a photocopy proof of purchase date (such as your sales
receipt) in a shippable container. A product returned without proof of the
purchase date is not eligible for warranty service.
5. Write the RMA number visibly on the outside of the package and ship it
prepaid to your dealer.

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Content
1. Getting Started............................................................................................................8
1.1 Safety Precautions....................................................................................................8
1.2 Packing List...............................................................................................................8
1.3 Document Amendment History .................................................................................9
1.4 Manual Objectives...................................................................................................10
1.5 System Specifications.............................................................................................11
1.6 Architecture Overview—Block Diagram..................................................................14
2. Hardware Configuration...........................................................................................15
2.1 Product Overview....................................................................................................16
2.2 Jumper and Connector List.....................................................................................17
2.3 Setting Jumpers & Connectors ...............................................................................19
2.3.1 Serial port 2 pin9 signal select (JRI2) ............................................................................................ 19
2.3.2 Serial port 1 pin9 signal select (JRI1) ............................................................................................ 19
2.3.3 BIOS ME function configuration (JME1) ........................................................................................ 20
2.3.4 Clear CMOS (JCMOS1)................................................................................................................. 20
2.3.5 JPGE connector (JPGE1) .............................................................................................................. 21
2.3.6 AT/ATX Power Mode Select (JSATX1).......................................................................................... 21
2.3.7 General purpose I/O connector (DIO1).......................................................................................... 22
2.3.8 ATX Power connector (ATXPWR1) ............................................................................................... 22
2.3.9 ATX Power connector (ATXPWR2) ............................................................................................... 23
2.3.10 USB connector (JUSB1)................................................................................................................ 23
2.3.11 Battery connector (BAT1).............................................................................................................. 24
2.3.12 LPC connector (JLPC1)................................................................................................................. 24
2.3.13 Miscellaneous setting connector (SPI).......................................................................................... 25
2.3.14 Speaker connector (SPK1)............................................................................................................ 25
2.3.15 LCD Inverter connector (JBKL1) ................................................................................................... 26
2.3.16 Front Panel connector (JFP1) ....................................................................................................... 26
2.3.17 CPU fan connector (CPUFAN1).................................................................................................... 27
2.3.18 System fan connector (SYSFAN1)................................................................................................ 27
2.3.19 Auxiliary Panel connector (JAUXP1)............................................................................................. 28
2.3.20 Serial port 1 connector (COM1)..................................................................................................... 28
2.3.21 Serial port 2 connector (COM2)..................................................................................................... 29
2.3.22 USB connector (JUSBH1)............................................................................................................. 29
2.3.23 USB connector (JUSBH2)............................................................................................................. 30
2.3.24 J1RS1 connector (J1RS1)............................................................................................................. 30
2.3.25 J1RS2 connector (J1RS2)............................................................................................................. 31

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2.3.26 Front Audio connector (FAUD1).................................................................................................... 31
2.3.27 Serial port connector (4COM1)...................................................................................................... 32
2.3.28 LVDS connector (LVDS1).............................................................................................................. 33
2.3.29 eDP-Panel connector (EDP 1)....................................................................................................... 34
3.BIOS Setup....................................................................................................................35
3.1 Introduction .............................................................................................................36
3.2 Starting Setup .........................................................................................................36
3.3 Using Setup ............................................................................................................37
3.4 Getting Help............................................................................................................38
3.5 In Case of Problems................................................................................................38
3.6 BIOS setup..............................................................................................................39
3.6.1 Main Menu...................................................................................................................................... 39
3.6.1.1 System Language.................................................................................................................. 40
3.6.1.2 System Date.......................................................................................................................... 40
3.6.1.3 System Time.......................................................................................................................... 40
3.6.2 Advanced Menu ............................................................................................................................. 40
3.6.2.1 CPU Configuration................................................................................................................. 41
3.6.2.1.1 CPU - Power Management Control....................................................................................... 42
3.6.2.2 PCH-FW Configuration.......................................................................................................... 43
3.6.2.2.1 OEM Flags Settings............................................................................................................... 44
3.6.2.2.2 Firmware Update Configuration............................................................................................. 44
3.6.2.3 Trusted Computing................................................................................................................ 45
3.6.2.4 ACPI Settings ........................................................................................................................ 45
3.6.2.5 Super IO Configuration.......................................................................................................... 46
3.6.2.5.1 Serial Port 1 Configuration .................................................................................................... 47
3.6.2.5.2 Serial Port 2 Configuration .................................................................................................... 47
3.6.2.5.3 Serial Port 3 Configuration .................................................................................................... 48
3.6.2.5.4 Serial Port 4 Configuration .................................................................................................... 48
3.6.2.5.5 Serial Port 5 Configuration .................................................................................................... 49
3.6.2.5.6 Serial Port 6 Configuration .................................................................................................... 49
3.6.2.6 NCT6106D H/W Monitor........................................................................................................ 50
3.6.2.6.1 Smart Fan Configuration ....................................................................................................... 50
3.6.2.7 S5 RTC Wake Settings.......................................................................................................... 52
3.6.2.8 Serial Port Console Redirection ............................................................................................ 52
3.6.2.8.1 Legacy Console Redirection Settings ................................................................................... 53
3.6.2.9 USB Configuration................................................................................................................. 54
3.6.2.10 Network Stack Configuration................................................................................................. 55
3.6.2.11 NVMe Configuration .............................................................................................................. 55
3.6.3 Chipset ........................................................................................................................................... 56
3.6.3.1 System Agent (SA) Configuration.......................................................................................... 56

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3.6.3.1.1 Memory Configuration ........................................................................................................... 57
3.6.3.1.2 Graphics Configuration.......................................................................................................... 58
3.6.3.1.3 DMI/OPI Configuration .......................................................................................................... 58
3.6.3.1.4 PEG Port Configuration......................................................................................................... 59
3.6.3.1.4.1PEG Port Feature Configuration............................................................................................ 60
3.6.3.2 PCH-IO Configuration............................................................................................................ 60
3.6.3.2.1 PCI Express Configuration .................................................................................................... 61
3.6.3.2.1.1Intel I211 LAN Chip (PCI-E Port 6)........................................................................................ 61
3.6.3.2.1.2M.2 KeyE (PCI-E Port 7~8) ................................................................................................... 62
3.6.3.2.1.3Intel I211/I210 LAN Chip (PCI-E Port 11).............................................................................. 63
3.6.3.2.1.4Intel I211/I210 LAN Chip (PCI-E Port 12).............................................................................. 64
3.6.3.2.1.5M.2 KeyM (PCI-E Port 21~24)............................................................................................... 65
3.6.3.2.2 SATA And RST Configuration ............................................................................................... 66
3.6.3.2.3 HD Audio Configuration......................................................................................................... 67
3.6.3.3 Board Configuration............................................................................................................... 67
3.6.4 Security........................................................................................................................................... 69
3.6.4.1 Secure Boot ............................................................................................................................... 69
3.6.4.1.1 Restore Factory Keys............................................................................................................ 70
3.6.4.1.2 Key Management................................................................................................................... 71
3.6.5 Boot................................................................................................................................................ 71
3.6.6 Save & Exit..................................................................................................................................... 72
3.6.5.1 Save Changes and Reset...................................................................................................... 72
3.6.5.2 Discard Changes and Reset.................................................................................................. 73
3.6.5.3 Restore Defaults.................................................................................................................... 73
3.6.5.4 Launch EFI Shell from filesystem device .............................................................................. 73
4. Drivers Installation.......................................................................................................74
4.1 Install Chipset Driver...............................................................................................75
4.2 Install VGA Driver....................................................................................................76
4.3 Install ME Driver......................................................................................................77
4.4 Install Audio Driver (For Realtek ALC888S HD Audio)............................................78
4.5 Install LAN Driver....................................................................................................79
4.6 Install RST Driver....................................................................................................81
5. Mechanical Drawing ....................................................................................................83

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1. Getting Started
1.1 Safety Precautions
Warning!
Always completely disconnect the power cord from your
chassis whenever you work with the hardware. Do not
make connections while the power is on. Sensitive
electronic components can be damaged by sudden power
surges. Only experienced electronics personnel should
open the PC chassis.
Caution!
Always ground yourself to remove any static charge before
touching the CPU card. Modern electronic devices are very
sensitive to static electric charges. As a safety precaution,
use a grounding wrist strap at all times. Place all electronic
components in a static-dissipative surface or static-shielded
bag when they are not in the chassis.
1.2 Packing List
Before you begin installing your single board, please make sure that the
following materials have been shipped:
1 x EMX-C246P motherboard
2 x SATA cables
1 x I/O Shield

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1.3 Document Amendment History
Revision
Date
By
Comment
1st
January 2022
Avalue
Initial Release

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1.4 Manual Objectives
This manual describes in details Avalue Technology EMX-C246P-B1 Single Board.
We have tried to include as much information as possible but we have not duplicated
information that is provided in the standard IBM Technical References, unless it proved to
be necessary to aid in the understanding of this board.
We strongly recommend that you study this manual carefully before attempting to set up
EMX-C246P-B1 or change the standard configurations. Whilst all the necessary
information is available in this manual we would recommend that unless you are confident,
you contact your supplier for guidance.
Please be aware that it is possible to create configurations within the CMOS RAM that
make booting impossible. If this should happen, clear the CMOS settings, (see the
description of the Jumper Settings for details).
If you have any suggestions or find any errors regarding this manual and want to inform us
of these, please contact our Customer Service department with the relevant details.

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1.5 System Specifications
System
CPU
Intel® 8th Gen Supports LGA 1151 CPU Up to 95W Max
Intel® 9th Gen Supports 4 core & 6 core CPU (TDP: 95W), 8 core CPU, only support
CPU TDP up to 35W Max.
Intel® C246 Chipset
BIOS
AMI uEFI BIOS, 256Mbit SPI Flash ROM
System Chipset
Intel® C246 Express Chipset
I/O Chip
Nuvoton® NCT6106D
System Memory
Two 260-pin DDR4 2400/2666MHz SO-DIMM socket, supports up to 64GB Max
Watchdog Timer
H/W Reset, 5~255 seconds/5~255 minutes
H/W Status
Monitor
CPU temperature monitoring
Voltage monitoring
CPU fan speed control
Expansion
1 x PCI-e x 16(Support 2 x PCI-e x 8 Riser card for C246 PCH)
1 x M.2 Key M 2242/2260/2280 Slot support PCI-e x 4 SSD
1 x M.2 Key E 2230 Slot support WiFi module
S3/S4
Yes (S0/S3/S4/S5)
I/O Specification
USB
10 x USB 3.0, 3 x USB 2.0
GPIO
16-bit GPIO
Display Specification
Chipset
Intel® C246 Express chipset
Resolution
VGA: 2048 x1536 @ 50 Hz
2 x HDMI: 3840 x 2160 @ 30 Hz, 2560 x 1600@ 30 Hz
(Note: This resolution is actual test result. Intel resolution: 4096x2160@24Hz)
Dual channel 18/24-bits LVDS (Chrontel CH7511B eDP to LVDS)
Multiple Display
Triple Display
HDMI
2 x HDMI: 3840 x 2160 @ 30 Hz, 2560 x 1600@ 30 Hz
(Note: This resolution is actual test result. Intel resolution: 4096x2160@24Hz)
LCD Interface
Dual channel 18/24-bits LVDS (Chrontel CH7511B eDP to LVDS) or eDP (optional)
Audio Specification
AC97 Codec
Realtek ALC888S co-lay ALC897 (Default: ALC888S) HD Audio Decoding Controller
Audio Amp
ALC105 4Ω/3W per channel Amplifier
Ethernet Specification
LAN Chip
1 x Intel® I219LM Gigabit Ethernet PHY
3 x Intel® I210AT PCI-e Gigabit Ethernet

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Ethernet
Interface
Gigabit Ethernet
Internal I/O Connectors
Fan
1 x 1 x 4 pin, pitch 2.54mm CPU fan connector with smart fan function supported
Buzzer
Onboard
CMOS Battery
1 x 2 Pin Pitch 1.25mm Vertical type battery connector
Power ON
1 x 2 x 5 pin, pitch 2.54mm connector for front panel
Audio
1 x 2 x 5 pin, pitch 2.54mm connector for front Audio
Internal I/O
Connector
Storage:
4 x SATA III
Onboard Infineon SLB9665 support TPM 2.0
COM 1~2: Support RS232/422/485 selected by BIOS selection
2 x 2 x 3 pin, pitch 2.00mm connector for COM 1~2 support RS232 with Pin
9,+5V/+12V/RI by jumper
2 x 2 x 3 pin, pitch 2.00mm connector for COM 2 support RS422/485 connector, Pin
5 with +5V
2 x 2 x 5 pin, pitch 2.00mm connector for COM1~2 support RS-232 connector
COM 3~6
1 x 2 x 20 pin, pitch 2.00mm connector for COM 3~6 support RS-232 connector
1 x 2 x 10 pin, pitch 2.0mm connector for 2 x USB 3.0
1 x 1 x 5 pin pitch 2.54mm connector for 1 x USB 2.0
1 x 2 x 20 pin, pitch 1.25mm connector for LVDS
1 x 1 x 5 pin, pitch 2.00mm Wafer connector for LCD inverter backlight connector
(5V/12V)
1 x 1 x 4 pin, pitch 2.54mm CPU fan connector with smart fan function supported
1 x 1 x 4 pin, pitch 2.54mm System fan connector with smart fan function supported
1 x 2 x 5 pin, pitch 2.54mm connector for front panel
1 x 2 x 4 pin, pitch 2.00mm connector for LAN1 ~LAN4 Activity Indicator LED
1 x 2 x 5 pin, pitch 2.54mm connector for front Audio
1 x 4 pin, pitch wafer 2.00mm connector for 3W x 2 Speaker
1 x 1 x 3pin, pitch 2.54mm connector for COMS Clear
1 x 2 Pin Pitch 1.25mm Vertical type battery connector
1 x 2 x 10 pin, pitch 2.00mm connector for GPIO: 16 bits & +5VS Level SMBus
1 x 2 x 4 pin, pitch 2.00mm connector for BIOS SPI
1 x 2 x 5 pin, pitch 2.0mm connector for LPC
Onboard buzzer
1 x 1 x 3 pin pitch 2.00mm connector for AT/ATX jumper
1 x 2 x 10 pin ATX power connector
1 x 2 x 2 pin ATX 12V power connector
Rear I/O Connectors

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USB
8 x USB 3.0
LAN
1 x Intel® I219LM Gigabit Ethernet PHY
3 x Intel® I210AT PCI-e Gigabit Ethernet
HDMI
HDMI: 3840 x 2160 @ 30 Hz, 2560 x 1600@ 30 Hz
Rear Side
External I/O
Connector
4 Intel® Gigabit Ethernet
8 x USB 3.0
1 x VGA
2 x HDMI
PS2 KB/MS + 2 x USB2.0 Type A connector
Mechanical & Environmental
Power
Requirement
+12V / +5V / 5VSB /+3.3V / -12V
ACPI
Single power ATX Support S0, S3, S4, S5
Power Type
AT / ATX mode Switchable Through Jumper
Operating Temp.
0~60°C (32~140°F)
Storage Temp.
-40~ 75°C
Operating
Humidity
40°C @ 95% Relative Humidity, Non-condensing
Size (L x W)
(Please consult product
engineers for the
production feasibility if
the size is larger than
410x360mm or smaller
than 80x70mm)
6.7" x 6.7" (170mm x 170mm)
Weight
0.40 kg
OS Support
(listed in accordance
with Intel document)
BIOS Support:
1. Win10 64bit UEFI
A. Intel® LGA1151 Socket Supports 8th Generation CPU
B. Intel® LGA1151 Socket Supports 9th Generation refresh CPU
2. Linux
Note: Specifications are subject to change without notice.

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1.6 Architecture Overview—Block Diagram
The following block diagram shows the architecture and main components of
EMX-C246P-B1.

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2. Hardware
Configuration

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2.1 Product Overview

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2.2 Jumper and Connector List
You can configure your board to match the needs of your application by setting jumpers. A
jumper is the simplest kind of electric switch.
It consists of two metal pins and a small metal clip (often protected by a plastic cover) that
slides over the pins to connect them. To “close” a jumper you connect the pins with the clip.
To “open” a jumper you remove the clip. Sometimes a jumper will have three pins, labeled 1,
2, and 3. In this case, you would connect either two pins.
The jumper settings are schematically depicted in this manual as follows:
A pair of needle-nose pliers may be helpful when working with jumpers.
Connectors on the board are linked to external devices such as hard disk drives, a
keyboard, or floppy drives. In addition, the board has a number of jumpers that allow you to
configure your system to suit your application.
If you have any doubts about the best hardware configuration for your application, contact
your local distributor or sales representative before you make any changes.
The following tables list the function of each of the board’s jumpers and connectors.
Jumpers
Label
Function
Note
JRI1/2
Serial port 1/2 pin9 signal select
3 x 2 header, pitch 2.00mm
JME1
BIOS ME function configuration
3 x 1 header, pitch 2.54mm
JSATX1
AT/ATX Power Mode Select
3 x 1 header, pitch 2.00mm
JCMOS1
Clear CMOS
3 x 1 header, pitch 2.54mm
JPGE1
JPGE connector
3 x 1 header, pitch 2.54mm
Connectors
Label
Function
Note
CPUFAN1
CPU fan connector
4 x 1 wafer, pitch 2.54mm
SYSFAN1
System fan connector 1
(with smart fan function supported)
4 x 1 wafer, pitch 2.54mm
SPI1
Miscellaneous setting connector
4 x 2 header, pitch 2.00mm

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COM1
Serial Port1 connector
5 x 2 header, pitch 2.00 mm
FAUD1
Front Audio connector
5 x 2 header, pitch 2.54mm
COM2
Serial Port2 connector
5 x 2 header, pitch 2.00 mm
4COM1
Serial Port connector
20 x 2 header, pitch 2.00mm
DIO1
General purpose I/O connector
10 x 2 header, pitch 2.00mm
SPK1
Speaker connector
1 x 4 wafer, pitch 2.00 mm
JUSBH1
USB connector
5 x 2 wafer, pitch 2.54mm
JUSBH2
USB connector
5 x 1 wafer, pitch 2.54mm
LAN1/2/3/4
2 x RJ-45 with Dual deck USB 3.0
connector
JUSB1
USB connector
10 x 2 wafer, pitch 2.00mm
J1RS1/2
J1RS1/2 connector
3 x 2 header, pitch 2.00 mm
JLPC1
LPC connector
5 x 2 header, pitch 2.00mm
PCIEX1
PCIe slot 1
BAT1
Battery connector
2 x 1 wafer, pitch 1.25mm
ATXPWR1
ATX Power connector
12 x 2 wafer, pitch 4.20mm
ATXPWR2
ATX Power connector
2 x 2 wafer, pitch 4.20mm
JSATA1~4
Serial ATA connector 1~4
HDMI1/2
HDMI connector
VGA1
VGA connector

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2.3 Setting Jumpers & Connectors
2.3.1 Serial port 2 pin9 signal select (JRI2)
* Default
Ring*
+5V
+12V
2.3.2 Serial port 1 pin9 signal select (JRI1)
* Default
Ring*
+5V
+12V

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2.3.3 BIOS ME function configuration (JME1)
* Default
Enable ME *
Disable ME
2.3.4 Clear CMOS (JCMOS1)
* Default
Protect*
Clear CMOS