JHCTech KMDA-2702 User manual

User’s Manual
1
User’s Manual
KMDA-2702
Ver.A1.0
Date:15, October, 2018

User’s Manual
2
Version Note
No.
Ver.
Note
Date
Writer
1
A1.0
first publish
20180815
Tracy Liu

User’s Manual
I
Copyright
The documentation and the software included with this product are copy- righted 2018 by Shenzhen JHC
Technology Co., Ltd. All rights are reserved. Shenzhen JHC Technology Co., Ltd. reserves the right to
make improvements in the products described in this manual at any time without notice. No part of this
manual may be reproduced, copied, translated or transmitted in any form or by any means without the
prior written permission of Shenzhen JHC Technology Co., Ltd. Information provided in this manual is
intended to be accurate and reliable. However, Shenzhen JHC Technology Co., Ltd. assumes no
responsibility for its use, nor for any infringements of the rights of third parties, which may result from its
use.
Acknowledgements
Award is a trademark of Award Software International, Inc.
IBM, PC/AT, PS/2 and VGA are trademarks of International Business Machines Corporation.
Intel and Pentium are trademarks of Intel Corporation.
Microsoft Windows and MS-DOS are registered trademarks of Microsoft Corp.
RTL is a trademark of Realtek Semi-Conductor Co., Ltd.
All other product names or trademarks are properties of their respective owners.
For more information on this and other JHC products, please visit our websites at:
http://www.jhctech.com.cn

User’s Manual
II
Product Warranty (2 years)
JHC 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 JHC, or which have been subject to misuse, abuse, accident or improper
installation.
JHC assumes no liability under the terms of this warranty as a consequence of such events.
Because of JHC.s high quality-control standards and rigorous testing, most of our customers never need
to use our repair service. If an JHC product 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 speed, JHC products
used, other hardware and software used, etc.) Note anything abnormal and list any onscreen messages
you get when the problem occurs.
2. Call your dealer and describe the problem. Please have your manual, product, and any helpful
information readily available.
3. If your product is diagnosed as defective, obtain an RMA (return merchandise authorization) number
from your dealer. This allows us to process your return more quickly.
4. Carefully pack the defective product, a fully-completed 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.

User’s Manual
III
Declaration of Conformity
CE
This product has passed the CE test for environmental specifications
when shielded cables are used for external wiring. We recommend the use
of shielded cables. This kind of cable is available from JHC. Please
contact your local supplier for ordering information. Test conditions for
passing included the equipment being operated within an industrial enclosure.
In order to protect the product from being damaged by ESD (Electrostatic
Discharge) and EMI leakage, we strongly recommend the use of
CE-compliant industrial enclosure products.
FCC Class A
Note: 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.
Technical Support and Assistance
Step 1. Visit the JHC web site at www.jhctech.com.cn where you can find the latest information about
the product.
Step 2. Contact your distributor, sales representative, or JHC’s customer service center for technical
support if you need additional assistance. Please have the following information ready before
you call:
- Product name and serial number
- Description of your peripheral attachments
- Description of your software (operating system, version,application software, etc.)
- A complete description of the problem
- The exact wording of any error messages

User’s Manual
A
CONTENTS
GENERAL INFORMATION.....................................................................................................................1
1.1 INTRODUCTION ...................................................................................................................................2
1.2 FEATURES...........................................................................................................................................2
1.3 SPECIFICATIONS..................................................................................................................................2
1.3.1 General ......................................................................................................................................2
1.3.2 Display.......................................................................................................................................3
1.3.3 Ethernet......................................................................................................................................3
1.3.4 Audio..........................................................................................................................................3
1.3.5 Power Consumption...................................................................................................................3
1.4 ENVIRONMENTAL SPECIFICATIONS.....................................................................................................3
1.5 MECHANICAL SPECIFICATIONS ...........................................................................................................4
HARDWARE INSTALLATION ...............................................................................................................7
2.1 INTRODUCTION .....................................................................................................................................8
2.2 JUMPERS AND CONNECTORS..................................................................................................................8
2.2.1 Setting Jumpers.............................................................................................................................9
2.3 JUMPER LOCATION..............................................................................................................................10
2.3.1 Clear CMOS Data ......................................................................................................................11
2.3.2 LVDS Power supply 12V/5V/3.3V Mode Select..........................................................................12
2.3.3 COM5/6/7/8/9/10 RS232/RS485/RS422 Mode Select.................................................................12
2.3.4 COM5/6/7/8/9/10 Matching resistor Select Jumper...................................................................13
2.3.5 COM9/COM10 RI/5V/12V Power supply Select........................................................................13
2.4 I/O、BUTTON AND LED INDICATION .................................................................................................14
2.4.1 Ethernet Connector (LAN)..........................................................................................................15
2.4.2 Power Input Connector (DC-IN)................................................................................................15
2.4.3 USB Connector...........................................................................................................................16
2.4.4 HDMI..........................................................................................................................................17
2.4.5 VGA Connector...........................................................................................................................18
2.4.6 COM1/2/5/6/7/8 Connector........................................................................................................18
2.4.7 COM3/4 Connector ....................................................................................................................19
2.4.8 COM9/10 Connector ..................................................................................................................19
2.4.9 DIO Connector ...........................................................................................................................20
2.4.10 SATA2.0 Port connector............................................................................................................21
2.4.11 SATA Power Connector.............................................................................................................21
2.4.12 PS/2 connector..........................................................................................................................22
2.4.13 Line-Out and Mic Connector....................................................................................................22
2.4.14 Remote Switch signal Connector..............................................................................................22
2.4.15 AT/ATX SW ...............................................................................................................................22
2.4.16 LED...........................................................................................................................................23
2.5 INSTALLATION ....................................................................................................................................23
2.5.1 HDD/SSD Installation................................................................................................................23
2.5.2 Installing Mini PCIe Module......................................................................................................27
2.5.3 Installing MSATA........................................................................................................................33
BIOS SETUP..............................................................................................................................................34
3.1AMIBIOS DESCRIPTION....................................................................................................................35
3.2 BIOS PARAMETER SETTINGS...............................................................................................................35

User’s Manual
B
3.2.1 BIOS Navigation Keys................................................................................................................35
3.2.2 Main Menu..................................................................................................................................36
3.2.3 Advanced Menu...........................................................................................................................37
3.2.4 Chipset Menu..............................................................................................................................47
3.2.5 Boot Menu...................................................................................................................................50
3.2.6 Security Menu.............................................................................................................................51
3.2.7 Save & Exit Menu.......................................................................................................................52
3.3 UPDATING THE BIOS..........................................................................................................................52
DRIVER INSTALLATION ......................................................................................................................54
4.1 ABOUT THE SOFTWARE DVD-ROM/CD-ROM..................................................................................55
4.2 AUTO-INSTALLING UNDER WINDOWS 8/10.........................................................................................55
4.3 MANUAL INSTALLATION.....................................................................................................................58
4.4 CPU TEMP LED DRIVER ...................................................................................................................59
4.5 UTILITY SOFTWARE REFERENCE.........................................................................................................59
SYSTEM RESOURCE..............................................................................................................................60
5.1 WDT AND GPIO.................................................................................................................................61
5.1.1 WDT ...............................................................................................................................................61
5.1.2 GPIO...............................................................................................................................................62

User’s Manual
1
General Information
CHAPTER
1

User’s Manual
2
1.1 Introduction
KMDA-2702 is an intelligent, universal dimension box computer, with PCB to PCB multi-structure and
fanless design. KMDA-2702 is equipped with the Intel® Celeron® Processor J1900 2.0-2.42GHz 4cores
4threads processor, with multiple I/O interfaces and 2.5 inches SATA HDD driver bay, mSATA slot for
storage.
KMDA-2702 offers 1*HDMI and 1*VGA dual independent display, 3*Giga Lan ports, 1*USB3.0 port,
6*USB2.0 ports (1 inside), 1*Audio line out, 1*MIC, 10*COM ports, 16-bit DIO ports, 2*Mini PCIe
sockets one with PCIe and USB signal, one with SATA and USB signal; The KMDA-2702 supports 1*2.5
inches SATA HDD driver bay, 1* mSATA for storage, DC 9-36V wide power input. Besides, operating
temperature showing in LEDs, economic and reliable, it will be fit for security and manufacture
application.
1.2 Features
Key features
1、Universal Aluminum chassis, Fanless design;
2、Intel® Celeron® Processor J1900 2.0-2.42G CPU;
3、1*DDR3L 1333MHz SODIMM , Up to 8GB;
4、3*Intel I211-AT PCIe Gig LAN;
5、1*Mini PCIe with PCIeX1&USB signal(Full size), 1*Mini PCIe with SATA&USB signal(Full size);
6、1*HDMI and 1*VGA dual independent display;
7、1*USB 3.0, 6*USB 2.0(1 inside), 1*PS/2;
8、2*RS232, 8*RS232/422/485, 16-bit DIO;
9、1* Line out , 3.5mm phone jack, 1*Mic;
10、DC 9-36V wide power input.
1.3 Specifications
1.3.1 General
CPU: Intel® Celeron® J1900, 2.0~2.42GHz, 4cores, 4threads, 2M cache
BIOS: 8MB SPI BIOS
System Memory: 1*DDR3L 1333MHz SODIMM, Up to 8GB
Watchdog Timer: 255-level interval timer, setup by software

User’s Manual
3
Serial Ports: 2* RS-232 DB9 male, 8* RS-232/422/485, DB9 male
USB: 1*USB 3.0 Type A port, 5*USB2.0 Type A ports(Front)，1* USB 2.0 Type A port (inside)
PS/2: 1*PS/2 keyboard or mouse
Expansion Interface:
1* Mini PCIe with PCIeX1\ USB2.0 signal, 1*micro Sim slot for 4G LTE/WiFi/BT etc
1* Mini PCIe with SATA3\ USB2.0 signal, used to be mSATA
Storage:
1* mSATA (Full size), dual AHCI
1*2.5”HDD bay, SATA2 3.0Gbps, cooling by aluminum cover
1.3.2 Display
Chipset: Intel HD Graphics
Display Memory: Shared system memory
Resolution: HDMI up to 1920x1080 @60Hz; VGA up to 1920x1200 @60Hz
1.3.3 Ethernet
Chipset: 3*Intel® I211AT PCI Express Gigabit Ethernet controller
Speed: 10/100/1000 Mbps Integrated
Interface: 3*RJ45
1.3.4 Audio
Chipset: Realtek ALC662VD
Interface: 1*Line out, 1*Mic, 3.5mm phone jack
1.3.5 Power Consumption
Input Voltage: DC 9-36V Input
Power Consumption: TDP 12V/1.3A (2.5” HDD)
Power Adapter: AC to DC 12V/5A, 60 W
Power Requirement: Minimum power input: DC 12V/3A
1.4 Environmental Specifications
Operating temperature:
-20 ~ 70°C (Fanless with wide operating temp. SSD, Airflow)

User’s Manual
4
-10 ~ 55°C (Fanless with HDD, Airflow)
Relative humidity: 10~90% @ 40°C (non-condensing)
Storage temperature: -40 ~ 85°C (-40 ~ 185°F)
Vibration loading during operation:
With SSD: 5 Grms, random, 5 ~ 500 Hz
With HDD:1 Grms, random, 5 ~ 500 Hz
Shock during operation:
With SSD: 50g, peak acceleration (11 ms duration)
With HDD:20g peak acceleration (11 ms duration)
EMC: CE, FCC Class A
1.5 Mechanical Specifications
The KMDA-2702 Fanless Embedded Box Computer contains an JHC SBC (Single Board Computer)
board, an JHC sub-board and an JHC sub-card, that is housed in an aluminum plate chassis.
Main board (front)
Figure 1.0

User’s Manual
5
Main board (rear)
Figure 1.1
Sub-board(ECB 153)
Figure 1.2

User’s Manual
6
Sub-card(ECD 7150)
Figure 1.3
KMDA-2702 Dimensions: Uint: mm
Figure 1.4

User’s Manual
7
Hardware Installation
CHAPTER
2

User’s Manual
8
2.1 Introduction
The following sections show internal jumpers setting and the external connectors and pin assignments for
applications.
2.2 Jumpers and connectors
The KMDA-2702 Fanless Embedded Box Computer consists of an JHC SBC (Single Board Computer)
board, an JHC sub-board and an JHC sub-card, that is housed in an aluminum plate chassis.
Warning: Do not remove any mechanical parts until you have verified that no power is flowing within the
Embedded Box Computer. Power must be switched off and the power cord must be unplugged.
JHC SBC board Internal Diagram
Figure 2.1

User’s Manual
9
Sub-board Internal Diagram
Figure 2.2
2.2.1 Setting Jumpers
You can configure your KMDA-2702 to match the needs of your application by setting the jumpers. A
jumper is the simplest kind of electrical 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 pins 1 and 2 or pins 2 and 3.
Figure 2.3
The jumper settings are schematically depicted in this manual as follows:

User’s Manual
10
Figure 2.4
A pair of needle-nose pliers may be helpful when working with jumpers. 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.
Tip: How to identify the first pin of the interface or jumper, observe the text mark next to the plug socket,
it will be indicated by "1" or bold lines or triangle symbols; look at the pad on the back, the square pad is
the Pin 1; all jumpers have a white arrow next to pin 1.
2.3 Jumper Location
The KMDA-2702 Embedded Box Computer has a number of jumpers inside the chassis that allows you
to configure your system to suit your application. The table below lists the functions of the various
jumpers. The table below shows the function of each of the board’s jumpers:
Figure 2.5
Jumpers
Jumper
Name
Description
CMOS
Clear CMOS Data Setting
3-Pin Block
J_PANEL1
LVDS screen 3.3V/5V/12V Power supply Select
6-Pin Block
JP1/JP3/JP5/JP7/JP9/JP11
COM5/6/7/8/9/10 RS232/RS485/RS422 Mode Select
8-Pin Block
JP2/JP4/JP6/JP8/JP10/JP12
COM5/6/7/8/9/10 Matching resistor Select
8-Pin Block
JP13
COM5/COM6 RI/5V/12V Power supply Select
8-Pin Block

User’s Manual
11
2.3.1 Clear CMOS Data
Figure 2.6
If you encounter the followings
a) CMOS data becomes corrupted.
b) You forget the supervisor or user password.
you can reconfigure the system with the default values stored in the ROM BIOS.
To load the default values stored in the ROM BIOS, please follow the steps below.
1. Power-off the system and unplug the power cord.
2. Set CMOS pins 2 and 3 to On. Wait for a few seconds and set CMOS back to its default setting,
pins 1 and 2 On.
3. Now plug the power cord and power-on the system.

User’s Manual
12
2.3.2 LVDS Power supply 12V/5V/3.3V Mode Select
Figure 2.7
J_PANEL is used to select the power supplied of LVDS panel.
2.3.3 COM5/6/7/8/9/10 RS232/RS485/RS422 Mode Select
Figure 2.8
NOTE:JP1/JP3/JP5/JP7/JP9/JP11 corresponds to COM5/6/7/8/9/10.

User’s Manual
13
2.3.4 COM5/6/7/8/9/10 Matching resistor Select Jumper
Figure 2.9
NOTE: JP2/JP4/JP6/JP8/JP10/JP12 corresponds to COM5/6/7/8/9/10.
2.3.5 COM9/COM10 RI/5V/12V Power supply Select
Figure 2.10
NOTE: Pin 12 and 34 are for COM9; Pin 56 and 78 are for COM10.