Realan E-mini ITX Series User manual

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
1
ITX Series of Motherboards
User Manual
The model you have chosen is
LR-J1900L1
REV:1.0
DATE ：2018/06/25

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
2
Motherboard User Manual
Copyright protection statement
This manual is for users, photos in this manual are for reference because of the
maintaining improvement and update of products. Please in kind prevail when there is
discrepancy between pictures and goods. Our firm has the final explanation for product
specification and relevant information in this manual. Changes are subject to change
without prior notice.
Trade Mark Statement
All of the brand, products, logo, trademark and company name belong to trademark itself
or trademark register’s owner.
AMI® is the registered trademark of AMI.
Intel® and Pentium® are the registered trademarks of Intel .
Netware® is the registered trademark of Novell.
PS/2 and OS/2 are the registered trademarks of International Business Machines.
Windows®98/2000/7/8.1/10 and Microsoft® is the registered trademark of Microsoft.

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
3
Security guidance
1. Please read through this security guidance carefully.
2. Please keep this manual for future reference.
3.Please keep the main board dry.
4. Please put the main board on a stable plane before using
5. The opening slot of the machine case is used for ventilation to avoid overheating of
parts in the machine case. Please do not cover or block such openings.
6. Please confirm the power supply voltage value and adjust the voltage to 110V/220V
before connecting device to the power supply.
7. Please keep the power in the place without trampled and do not stack anything on the
power cord.
8. Please disconnect the power after shutdown before plugging in or out any extension
card or equipment module.
9. Please note all notes and warnings mentioned in the manual.
10. No liquid is allowed to pour into the slot of the box, otherwise serious damage or circuit
burn will occur.
11. Please contact a professional to handle if any of the following situations occurs:
A. The power cord or plug is damaged;
B. Liquid infiltrates into the machine;
C. the machine is exposed to moist environment;
D. The machine is not working normally or the user cannot make it work normally through
the instruction of this manual;
E. falling or being injured;
F. there are obvious signs of damage to the machine;
12. Please don't put the device in or stored in a temperature higher than 85 ℃, otherwise
it may cause damage to equipment.
Items list
Thanks for purchasing Realan LR-J1900 series Mainboard. Please check if the packing
box is intact. If it is broke or short of some accessories, please contact the suppliers.
1, One LR-J1900L1 Mainboard
2, One SATA data cable
3, SATA power cable
4, One COM cable
5, One Shield

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
4
Catalogue
Security Guidance....................................................…………….........................................3
Product list Description................................................................... ………….....................3
Chapter 1 Introduction to Motherboard.......................................………........................6
1.1 Motherboard interface diagram................................... …………..................................7
1.2 Motherboard specifications....................................………............................................8
1.3 Motherboard rear I/O panel.........................………......................................................9
1.4 Motherboard Layout Diagram.....................................…..............................................9
Chapter II Board jumper and interface Setup instructions..........................................10
2.1 motherboard jumper function settings....................….................................................10
2.1.1 Clear CMOS Jumper (CLR_CMOS1)....................…...............................................10
2.1.2 LVDS LCD Voltage Selection Jumper (JPWR_LVDS).........................….................10
2.1.3 COM1 / COM2 Status Select Function Jumper (COM1_SET1 / COM2_SET1).......11
2.1.4 COM2_SET2 selected jumper....................…..........................................................11
2.1.5 AUTO_ON1selected jumper....................….............................................................11
2.2 Motherboard Interface Installation Instructions.......................................…................12
2.2.1 power connector of Fan(Sys_fan/cpu_fan)....................…......................................12
2.2.2 USB interface (F_USB) ....................…...................................................................12
2.2.3 COM Interface ....................….................................................................................12
2.2.4 Com1/com2 Interface Functional Status selection jumper (Com1_9/com2_9) .......13
2.2.5 Clear CLR_CMOS1 PIN definition ....................…...................................................13
2.2.6 Multi-channel display setting description....................…..........................................13
2.2.7 LVDS pin definition....................…...........................................................................14
2.2.8 LVDS Voltage Control Pin Definition (LVDS_PWR).........….....................................14
2.2.9 INVERT Pin Definition (LVDS Backlight Control Interface)....................…...............14
2.2.10 LVDS resolution setting....................…..................................................................15
2.2.11 VGA Pin Definition (VGA_H1)....................….........................................................15
2.2.12 HDMI Interface Pin Pin Definition (JHDMI)....................….....................................15
2.2.13 amplifier pin definition (SPEAKER)....................…................................................16
2.2.14 ATX Power Supply Installation (ATX1 12V)....................…....................................16
2.2.15 AUTO_ON1 pin definition (AUTO_SET)....................….........................................17
2.2.16 SATA Power Connector Pin Definition (HDD_PWR1)....................….....................17
2.2.17 M.2 Key E slot introduction....................….............................................................17
2.2.18 Front audio input / output interface (F_AUDIO1)................................…................17
2.2.19 LPT Interface (LPT)...............….............................................................................18
Chapter III Driver Installation....................…..................................................................20
3.1 Intel ME driver installation.......................................................................…................20

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
5
3.2 Chipset driver installation....................…....................................................................20
3.3 Sound Card Driver Installation....................................................................................20
3.4 NIC driver installation..............................................................................…................20
3.5 graphics card driver installation....................…...........................................................21
3.6 USB3.0 driver installation....................…....................................................................21
3.7 Settings for audio control output....................…..........................................................21
Attachment 1: troubleshooting....................…...................................................................24
Attachment 2: common problems and solutions....................…........................................26
Attachment 3: how to upgrade BIOS....................….........................................................28

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
6
Chapter 1 Introduction to Motherboard
Thank you for purchasing our ITX series motherboard!
The motherboard adopts single chip design, which is based on FCBGA 1170 chip
design. It is equipped with Bay Trail-D Pentium/Celeron processor, providing high
performance and professional ITX platform solutions.
Chip + Processor: Motherboard Board Sticker Bay Trail-D Processor BGA1170 SoC.
Memory: Onboard 1*SODIMM memory slot, support DDR3L 1333/1600 memory,
maximum capacity can support 8GB.
Graphics display: the motherboard adopts Intel (R) HD Graphics display core and
output interface :VGA+VGA_H1+HDMI+JHDMI+LVDS.
NIC: the motherboard adopts Realtek 8111F Gigabit LAN.
Sound card: the motherboard uses Realtek HD ALC662 audio decoder chip, supporting
Line_OUT and MIC_IN.
IO interface/expansion slot: the motherboard supports 9*USB interface (8*USB2.0,
1*USB3.0), 5*USB2.0 needs to be expanded, 5 display output interfaces
(1*VGA,1*VGA_H1,1*HDMI,1*JHDMI,1*dual channel 24bit LVDS interface), 1* Gigabit
LAN interface, onboard high fidelity sound card chip, 1* speaker/headphone output
interface,1*MIC_IN interface,1*3W power amplifier interface Pin,1*M.2 Key E slot,
support 2230 WiFi+BT,1*Mini PCIE slot, support mSATA SSD, onboard 6*COM
interface, 1*SATA interface,1*LPT print interface,1*SPDIF pin,1*PS/2 pin 1*CIR pin.
Power supply mode: the motherboard adopts 12V DC power supply mode.

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
7
1.1 Motherboard interface diagram
Motherboard front

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
8
1.2 Motherboard specifications
Processor
Bay Trail-D Processor BGA1170 Single Chip
Intel Celeron J1900 Processor
RAM
1*SO-DIMM, support single channel DDR3 1333/1600MHZ,
maximum support 8G
Display core
Intel （R) HD Graphics Display core
Network card
Onboard Realtek 8111F Gigabit LAN, support PXE diskless boot
Sound card
Onboard Realtek HD ALC 662 5.1 audio chip
Storage
1*MINI PCIE support mSATA SSD
1*SATA2.0
Expansion slot
1*M.2 Key E Slot
USB
8*USB2.0 (5 of which are expanded by pins)
1*USB3.0
Internal socket
1*Mini PCIE/1*F_PANEL/1*SYS_FAN1
1*CPU_FAN1/1*SATA/1*SATA_PWR
6*COM/2*COM_9/1*LVDS/1*LVDS_PWR
1*INVERT/1*F_AUDIO1/1*SPEAKER
1*SPDIF/1*ATX12V/1*CLR_CMOS
1*VGA_H1/1*JHDMI/1*AUTO_SET
1*LPT/1*M.2/3*F_USB2.0
Rear interface
1*DC
1*LAN
1*VGA
1*USB3.0
3*USB2.0
1*HDMI
1*HP_OUT
1*MIC_IN
BIOS
AMI EFI BIOS
Power supply
12V
Operating
system
Support Windows 10
Support Windows 8.1
Support Windows 7
Support Windows ES 7/8
Support LINUX
PCB
specifications
170mm*170mm
Working
environment
-15℃-60℃
0%-96% relative humidity, no condensation

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
9
1.3 Motherboard rear I/O panel
The rear panel of the motherboard supports 1 DC_IN, 1*LAN, 1*VGA,1 USB3.0,
3*USB2.0, 1*HDMI, 1*HP_OUT and 1*MIC_IN
1.4 Motherboard Layout Diagram

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
10
Chapter II Board jumper and interface Setup instructions
2.1 motherboard jumper function settings
Before installing the hardware devices, please set the corresponding jumper according to
your needs according to the following jumper function setting instructions.
Tip: How to identify the first stitch of jumper and pin.
All the first jumpers on the motherboard are close to the line or marked with a thick white
line or a white triangle symbol , or look at the back bonding pad of motherboard, generally,
square pad is for the first stitch, please do not reverse, otherwise it may cause damage to
your motherboard or other hardware devices.
Note: The black dots are the first pins in the schematic of jumpers and pins in this
instruction.
2.1.1 Clear CMOS Jumper (CLR_CMOS1)
If there is a problem with the motherboard because of BIOS setup error, we can clear the
BIOS settings to solve the problem, the method is that in the power off state, the CMOS
jumper to 2-3 pins, jump out 5-6 seconds, please do not in the power-on state to clear the
CMOS, otherwise it may damage your motherboard, its definition is as follows:
2.1.2 LVDS LCD Voltage Selection Jumper (JPWR_LVDS)
Before using the selected LVDS LCD screen, please check the rated voltage of the
required operation, please select the jumper according to the supply voltage of the LVDS
LCD screen, the jumper is set as follows:
PIN
Set state
1-2
12V available
PIN
Set state
1-2
Maintain CMOS data (default)
2-3
Clear CMOS data

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
11
3-4
5V available
5-6
3.3V available (default)
2.1.3 COM1 / COM2 Status Select Function Jumper (COM1_SET1 / COM2_SET1)
COM1/COM2 support RS232 serial mode, Pin9 with normal, 5V and 12V voltage three
modes, you can set the COM1_SET1/COM2_SET1 pins jumper to choose the working
status of COM1/COM2.
COM1_SET1/COM2_SET1 pin jumper is set as follows:
COM1_SET1/COM2_SET1
COM1 / COM2 status
1-2
12V
3-4
DCD
5-6
5V
2.1.4 COM2_SET2 selected jumper
COM2_SET2
COM2 state
1-2
RS232
3-4
RS422
5-6
RS485
J485_422(RS422 and RS485)definition ：
RS422
RS485
1
422RX+
2
422RX-
1
NC
2
NC
3
422TX+
4
422TX-
3
485+
4
485-
5
GND
6
GND
5
GND
6
GND
2.1.5 AUTO_ON1selected jumper
A set of Auto_on1 pin jumpers are available on the motherboard,they are control
jumpers to support the Power-on function on the hardware, the Auto_set pin jumper is set
as follows:
PIN
Set state
1-2
NORMAL（default）
2-3
Hardware automatic power on

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
12
2.2 Motherboard Interface Installation Instructions
2.2.1 power connector of Fan(Sys_fan/cpu_fan)
when the fan is connected to the fan power outlet, the user must connect the Red
Connector to the 12V power supply pin, and the black line is connected to the grounding,
if you want to observe the working state of the fan in the BIOS or in the Hardware monitor
program, You must use a fan that supports speed detection. For a fan with a speed sensor,
the fan will produce 2 pulses per rotation, and the system hardware monitor will statistics a
report of a fan rotation speed, which can display the speed of the fan in the CMOS.
2.2.2 USB interface (F_USB)
motherboard provides 5 USB2.0 interfaces, and the front panel USB interface
(F_USB1/F_USB2/F_USB3) sets up 5 standard USB2.0 interfaces, which require USB
cable to connect USB signal PIN to the standard USB connector (extended), you can
purchase the cable from the motherboard distributor or the electronic marketplace.
Note: the first leg is marked "Δ" on the motherboard , please do not connect wrong,
otherwise there may be damage to your motherboard or equipment, the PIN definition is
as follows:
1
2
3
4
5
VCC
USB-
USB+
GND
NC
6
7
8
9
10
VCC
USB-
USB+
GND
GND
2.2.3 COM Interface
Board provides 6 COM connector pins which are 2.0-pitch DB9 pins, require a COM cable
with a standard COM interface to connect to an external device ,you can purchase from
the motherboard distributor or the electronic market.
The COM port is defined as follows:
PIN
Pin definition
Definition

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
13
1
DCD
Data carrying test
2
RXD
Accept data
3
TXD
transfer data
4
DTR
Data terminal is ready
5
GND
Ground
6
DSR
Data setup is ready
7
RTS
Request to send
8
CTS
Clear send
9
RI
Bell indication
10
NC
NC
2.2.4 Com1/com2 Interface Functional Status selection jumper (Com1_9/com2_9)
the COM1/COM2 pin on the motherboard provides normal,5v and 12V three state
selections, which you can set by setting com1_set1/com2_ SET1 jumper to select the
Com1/com2 working level. (For details, see the 2.1.3 Description).
the com1_9/com2_9 pins are defined as follows:
PIN
Pin definition
PIN
Pin definition
1
RI
4
NRI
2
VCC12
5
RI
3
RI
6
VCC5
2.2.5 Clear CLR_CMOS1 PIN definition
The motherboard provides a set of CLR_CMOS1 jumpers, and clearing the CMOS will
cause the previous BIOS system settings to be permanently eliminated and set it to the
original (factory-set) BIOS system settings. (For details, please refer to the 2.1.1
description)
CLR_CMOS1 pin pins are defined as follows:
PIN
Pin definition
Definition description
1
VBAT
Connecting battery
2
RICRST
Connect RTC circuit
3
GND
Ground
2.2.6 Multi-channel display setting description
The motherboard has VGA, VGA_H1, HDMI, JHDMI, LVDS a total of 5 display interfaces,
these interfaces can only achieve dual-display, the specific combination is as follows:
VGA/VGA_H1+HDMI/JHDMI
Synchronous/asynchronous dual
display
HDMI/JHDMI+LVDS
Synchronous/asynchronous dual
display
VGA/VGA_H1+LVDS
Synchronous/asynchronous dual
display

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
14
Note: VGA and VGA_H1 are sync signals, and HDMI and JHDMI are sync signals.
2.2.7 LVDS pin definition
Motherboard provides a set of 2 * 15pin LVDS pins, support for dual-channel 24bit LVDS
LCD screen.
LVDS Pin as listed below:
PIN
definition
PIN
definition
1
VCC
16
ACLK+
2
VCC
17
AD03-
3
VCC
18
AD03+
4
GND
19
BD00-
5
GND
20
BD00+
6
GND
21
BD01-
7
AD00-
22
BD01+
8
AD00+
23
BD02-
9
AD01-
24
AD02+
10
AD01+
25
GND
11
AD02-
26
GND
12
AD02+
27
BCLK-
13
GND
28
BCLK+
14
GND
29
BD03-
15
ACLK-
30
AD03+
2.2.8 LVDS Voltage Control Pin Definition (LVDS_PWR)
The motherboard provides a set of JPWR_LVDS voltage control pins, which are used to
select the working voltage of the LCD. (For the setting method, see 2.1.2 for details)
LVDS_PWR Pin as listed below:
PIN
definition
PIN
definition
1
12V
2
LVDS VCC
3
5V
5
LVDS VCC
3
3.3V
6
LVDS VCC
2.2.9 INVERT Pin Definition (LVDS Backlight Control Interface)

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
15
The motherboard provides a 6pin / 8pin INVERT interface, used to adjust the LVDS1
device backlight panel brightness control.
6pin INVERT Pin as listed below:
PIN
definition
definition description
1
+12V
power supply
2
+12V
power supply
3
L_BKLT_EN
LVDS backlight is on
4
L_BKLT_CTL
LVDS backlight control
5
GND
Ground
6
GND
Ground
2.2.10 LVDS resolution setting
Motherboard provides a set of 3 * 4pin LVDS pin, connect LVDS is the resolution of the
panel pin jumper to be set.
set as follows:
1-2
3-4
5-6
7-8
LCD_SET
0
1
1
1
Single6 1024*768
1
0
1
1
Single8 1024*768
0
0
1
1
Single6 1280*768
1
1
0
1
Single6 1280*800
0
0
0
1
Single6 1366*768
1
1
1
0
Single8 1366*768
0
1
1
0
Single8 1440*900
0
0
1
0
Single8 1600*900
1
0
0
0
Single8 1920*1080
Note: when the jumper cap 1-2, 3-4, 5-6, 7-8 are connected, the status is "1"
2.2.11 VGA Pin Definition (VGA_H1)
Motherboard provides a set of 1 * 12pin VGA_H1 pin, through the use of VGA cable into a
standard VGA interface to connect with external devices.
VGA_H1 Pin as listed below:
PIN
definition
PIN
definition
1
GND
7
VGA_GREEN
2
VGA_VSYNC
8
GND
3
VGA_HSYNV
9
VGA_BLUE
4
GND
10
GND
5
VGA_RED
11
DDC_DATA
6
GND
12
DDC_CLK
2.2.12 HDMI Interface Pin Pin Definition (JHDMI)

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
16
The motherboard provides a set of 2 * 8 JHDMI pins that need to be converted to a
standard HDMI interface using a JHDMI cable to connect with external devices.
JHDMI Pin as listed below:
PIN
definition
PIN
definition
1
TXD2+
2
DDB_CLK
3
TXD2-
4
DDB_DATA
5
TXD1+
6
NV
7
TXD1-
8
HPD
9
TXD0+
10
DAC_5V
11
TXD0-
12
GND1
13
TXC0+
14
GND2
15
TXC0-
16
GND3
2.2.13 amplifier pin definition (SPEAKER)
Motherboard provides a set of SPEAKER pin, used to connect the speaker, play a role in
increasing the size of the audio sound.
SPEAKER Pin as listed below:
PIN
definition
definition
1
R+
Right speaker positive
2
R-
Right speaker negative
3
L+
Left speaker positive
4
L-
Left speaker negative
2.2.14 ATX Power Supply Installation (ATX1 12V)
Motherboard provides a set of 4pin DC_IN (12V) power connector.
1) As shown below, should be used with the new P4 power supply, and connect the ATX
power plug on the motherboard to the corresponding power connector on the
motherboard. Otherwise, cannot power on, and some devices may be damaged.
2) The current of 5VSB provided by your power supply cannot be less than 2A. Otherwise,
the Wake on LAN / Modem may not be realized.
4pin ATX_PWR power connector pins as listed below:
PIN
definition
definition description

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
17
1
GND
Ground
2
GND
Ground
3
VCC
+12V
4
VCC
+12V
2.2.15 AUTO_ON1 pin definition (AUTO_SET)
The motherboard provides a set of AUTO_ON1 pins for automatic hardware power-on.
(Setting method see 2.1.5 description)
AUTO_ON1 pin assignments as listed below:
PIN
definition
definition description
1
NC
empty link
2
PWRIN
Connect to the PWRIN of
F_PANEL
3
PWRBIN_SIO
Connect hardware automatically
powered chip
2.2.16 SATA Power Connector Pin Definition (HDD_PWR1)
Motherboard provides one SATA_PWR interface, SATA_PWR is to power the SATA hard
disk or optical drive power connector.
SATA power connector pins as listed below:
PIN
definition
definition description
1
12V
3.5 inch hard drive power supply
2
GND
Ground
3
GND
Ground
4
5V
2.5 inch hard drive power supply
2.2.17 M.2 Key E slot introduction
The motherboard provides a M.2 Key E slot, can support 2230 WIFI+Bluetooth(the
network card should support it)
2.2.18 Front audio input / output interface (F_AUDIO1)
The motherboard provides a front-end audio output interface, F_AUDIO1, which allows
you to connect to the audio connectors on the front panel of the chassis so that you can
easily listen to music from the host to the panel and use the microphone for sound input.
F_AUDIO1 pin pins are defined as follows:

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
18
PIN
definition
definition description
1
MIC_L
Microphone left channel input
2
GND
Ground
3
MIC_R
Microphone right channel input
4
NC
empty link
5
LINE2_R
Front audio right channel output
6
AUD_RET_R
The front audio right channel
detection signal is returned
7
AZSENSE
Low signal activated
8
NC
empty link
9
LINE2_L
Front audio left channel output
10
AUD_RET_L
The front audio left channel
detection signal is returned
PWR_LED power indicator:
The power indicator is a 2-pin connector that indicates the working status of the computer.
When the computer is powered on, it indicates
The light is always on, otherwise it is not lit (note: there are positive and negative points).
HDD_LED hard disk indicator
This set of two-pin header pin is connected to the hard disk indicator on the computer
case. The LED can be used to display the working status of the hard disk. If the hard disk
has read action, the indicator light will light up (Note: there are positive and negative
points).
PWR_ON power switch
PWR_ON is a two-pin connector that controls the main switch of the ATX main power
supply. Connect this set of pins to the switch on the computer case that controls the power
of the computer. When the two pins are shorted, the switch can be turned on and off.
RESET reset button
This set of two-pin headers is connected to the RESET switch on the computer case,
allowing you to restart the system without turning off the computer, especially in the case
of system stalls or crashes.
2.2.19 LPT Interface (LPT)
The motherboard provides a set of LPT print interface pins with the following pin
definitions:
PIN
definition
PIN
definition
1
LTP STB
14
GND

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
19
2
LPT AFD
15
LPT PD6
3
LPT PD0
16
GND
4
LPT ERR
17
LPT PD7
5
LPT PD1
18
GND
6
LPT INIT
19
LPT ACK
7
LPT PD2
20
GND
8
LPT SLIN
21
LPT BUSY
9
LPT PD3
22
GND
10
GND
23
LPT PE
11
LPT PD4
24
GND
12
GND
25
LPT SLCT
13
LPT PD5
26
NC
2.2.20 System signal/Control panel port(F_PANEL)
Motherboard provide a group F_PANEL pin to connect case’s front panel button and
indicator light.Please take good care of positive and negative polar when connecting. If
connecting in wrong, some function cannot be worked in normal.
F_PANEL1 Pin stitch is defined as follows:
F_PANEL stitch is defined as follows:
PIN
Stitch Definition
Definition
1
HDD_POWER_LED+
HDD Indicator light positive polar
2
FP_LED+
POWER_LED Main color
3
HDD_LED
HDD Indicator light negative polar
4
FP_LED-
POWER_LEDAlternative color
5
GND
Ground
6
PWRBTN#
Power switch
7
SYS_RST#
Reset switch
8
GND
Ground
9
3.3V
3.3V Voltage 3.3V
10
NC
Empty link

www.minicase.net
REALAN COMPUTER PRODUCTS LIMITED
Add: 7th floor, Bldg.7, South Block 2 of Zhongguan Industrial Zone, Liuxian Road
NO.1213, Taoyuan Street, Nanshan District, Shenzhen 518055, China
TEL: [phone]
20
F_PANEL stitch is defined as follows:
PWR_LED Power indicator:
The power indicator is a 2-pin connector that indicates the working status of the computer.
When the computer is powered on, it indicates,The light is always on, otherwise it is not lit
(note: there are positive and negative points).
HDD_LED hard disk indicator
This set of two-pin header pin is connected to the hard disk indicator on the computer
case. The LED can be used to display the working status of the hard disk. If the hard disk
has read action, the indicator light will light up (Note: there are positive and negative
points).
PWR_ON power switch
PWR_ON is a two-pin connector that controls the main switch of the ATX main power
supply. Connect this set of pins to the switch on the computer case that controls the power
of the computer. When the two pins are shorted, the switch can be turned on and off.
RESET reset button
This set of two-pin headers is connected to the RESET switch on the computer case,
allowing you to restart the system without turning off the computer, especially in the case
of system stalls or crashes.