Maxtang SKD70 User manual

SKD-70 Mini ITX Motherboard

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© 2022 Shenzhen Maxtang Computer Co., Ltd. All rights reserved. No part of this publication may be reproduced,
copied, stored in a retrieval system, translated into any language, or transmitted in any form or by any means,
electronic, mechanical, photocopying, or otherwise, without the prior written consent of Shenzhen Maxtang
Computer Co., Ltd (hereinafter referred to as “Maxtang”).
Disclaimer
Maxtang reserves the right to make changes and improvements to the products described in this document without
prior notice. Every effort has been made to ensure the information in the document is correct; however, Maxtang
does not guarantee this document is error-free.
Maxtang assumes no liability for incidental or consequential damages arising from misapplication or inability to use
the product or the information contained herein, nor for any infringements of rights of third parties, which may result
from its use.
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trademarks and/or registered trademarks of their respective owners.

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SKD-70 Mini ITX Motherboard
User Manual
(Version 1.3)
Version:
No.
Description
Issue Date:
V1.0
Initial Version.
2017/05/27
V1.1
Updated Version
2017/09/18
V1.3
Add Z170 Chipset
2022/05/06

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Contents
SKD-70 Mini ITX Motherboard......................................................................................................................1
Chapter 1 Product Introduction....................................................................................................................3
1.1 Brief Introduction....................................................................................................................................3
1.2 Parameters..............................................................................................................................................3
1.3 Connector Diagram.................................................................................................................................4
Chapter 2 Hardware......................................................................................................................................5
2.1 Jumper Setting ........................................................................................................................................5
2.2 Memory Slots..........................................................................................................................................5
2.3 Display.....................................................................................................................................................5
2.4 Storage ....................................................................................................................................................6
2.5 USB..........................................................................................................................................................6
2.6 LAN..........................................................................................................................................................6
2.7 Audio.......................................................................................................................................................6
2.8 COM (screen printing: JCOM1_4, RS485) ...............................................................................................7
2.9 LPT (screen printing: LPT)........................................................................................................................8
2.10 Expansion Slots (screen printing: M.2_S, M.2_E, PCIe 4X) ...................................................................8
2.11 PCIe Slots (screen printing: PCIe16X, PCIe1X).......................................................................................8
2.12 GPIO (screen printing: JGPIO) ...............................................................................................................9
2.13 PS/2 (screen printing: PS2)....................................................................................................................9
2.14 Switch panel pin (screen printing: JPOWER1).......................................................................................9
2.15 Hardware Auto Start (screen printing: JAT).........................................................................................10
2.16 CMOS Clearance/Retention (screen printing: JCMOS) .......................................................................10

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Chapter 1 Product Introduction
1.1 Brief Introduction
The SKD-70 is a mini ITX motherboard based on the Intel® PCH B150/H110/Z170 Chipset and supports
the Intel® Skylake-S/Kabylake-S processors.
1.2 Parameters
CPU: Intel Skylake-S/Kabylake-S Processor (LGA1151 Socket)
Chipset: Intel PCH B150/H110/Z170
Memory: Dual Channel SO-DIMM DDR4 up to 32GB
GPU: Integrated graphics based on processors. Display via 1x HDMI1.4, 1x DP1.2 standard interface, 1x
eDP1.3 interface (optional)
Storage: 2 x SATA3.0, 1 x M.2_Key B for 2242 SSD
USB: 4xUSB3.0(rear ports), 2xUSB2.0(rear ports), 3xUSB2.0(1*vertical interface+2*headers, onboard pin
2.0mm)
Ethernet: 3xRJ45 interface Intel i211 Gigabit network controllers
Audio: High-definition audio codec, supports rear Line-out, Mic-in, optional Line-in; front Line-out,
Mic-in, and power amplifier (on-board pins, connecting passive speaker)
Serial Port: 4x RS232 (optional 5V/12V power supply for COM1/2), 1x RS485
Expansion: 1 x M.2 Key E for 2230 Wi-Fi card, 1x PCIe1X, 1xPCIe16X
Other I/O: 8 x GPIO (on-board pin), 1 x PS/2 (pin, KB+MOUSE) 1 x LPT (pin)
Dimension: 170mm x 170mm
Power: ATX_24PIN+ATX_12V auxiliary power supply (2x2)
Working Temperature: -40℃~60℃

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1.3 Connector Diagram
LAN2/USB3.0
AUDIO
LAN1/USB3.0
LAN3/USB2.0
HDMI + DP
CPU
PCIE_16X
USB2.0
GPIO
LPT
PCIE_1X
M.2_S
M.2_E
PS/2
RS485
POWER BTN
USB2.0
RS232
SATA1/2
eDP
MEMORY

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Chapter 2 Hardware
2.1 Jumper Setting
Please configure the jumpers according to your requirements before installing the hardware.
How to identify the first header of jumpers and pins:
1. Observe the mark beside the jumper or pins, and find the header marked by “1” or bold
line/triangular symbol.
2. Observe the rear panel and the header with a square solder pad is the first header.
2.2 Memory Slots
On-board 2 x SO-DIMM DDR4 slots, support dual channels, maximum capacity 32GB.
2.3 Display
1 x HDMI1.4 standard interface; 1x DP 1.2 interface and 1x optional eDP 1.3 interface (2 LANE).
eDP:
Pin
Signal
Pin
Signal
1
BL_VCC
16
AUX_N
2
BL_VCC
17
AUX_P
3
BL_VCC
18
GND
4
BL_VCC
19
LANE0P
5
BL_PWM
20
LANE0N
6
BL_EN
21
GND
7
GND
22
LANE1P
8
GND
23
LANE1N
9
GND
24
GND
10
GND
25
NC
11
HPD
26
NC
12
GND
27
GND
13
LCD_VCC
28
NC
14
LCD_VCC
29
NC
15
GND
30
GND

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2.4 Storage
It supports 2xSATA3.0 interfaces, and 1xM.2 Key B slot for 2242 SSD.
2.5 USB
The board supports four standard USB3.0 ports; two standard USB2.0 ports on its rear panel; one
vertical USB2.0 interface and two USB2.0 headers onboard.
The USB2.0 rear ports are powered by 5V standby voltage and support a wake-up system through a USB
keyboard/mouse when the PC is turned off (not disconnected to the power). They also can be used as a
charger for external devices: 5V/500mA.
2.6 LAN
The board features the Intel i211 High-performance Gigabit network controllers, provides 3x RJ45
interfaces, supports Magic packet wake up and the LAN1 supports PXE network boot.
LED Status Indicator:
LILED (Green) Status
Function
ACTLED (Orange) Status
Function
Always on
Network connected
Blinking
Data transmitting
2.7 Audio
ALC662 Audio Codec. The green interface is the audio output (Speaker_out), and the pink interface is the
Mic input (Mic-in), the blue interface is the Line_in as an optional choice. The JAUD is for the power
amplifier, and the JSPIF pin is for SPDIF.
FP_AUDIO:
Signal
Pin
Signal
MIC2-L
1
2
AGND
MIC2-R
3
4
AVCC
FRO-R
5
6
MIC2-JD
F-IO-SEN(AGNG)
7
8
(NC)
FRO-L
9
10
LIN2-JD

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JAUD:
Pin
Signal
1
L+
2
L-
3
R-
4
R+
2.8 COM (screen printing: JCOM1_4, RS485)
The board supports 1xRS485 and 4xRS232 serial ports. Optional 5V/12V power supply for COM1 and
COM2.
JCOM1_4:
Signal
Pin
Signal
DCD#
1
2
RXD
TXD
3
4
DTR#
GND
5
6
DSR#
RTS#
7
8
CTS#
RI#
9
10
NC(optional 5V/12V）
DCD#
11
12
RXD
TXD
13
14
DTR#
GND
15
16
DSR#
RTS#
17
18
CTS#
RI#
19
20
NC(optional 5V/12V）
DCD#
21
22
RXD
TXD
23
24
DTR#
GND
25
26
DSR#
RTS#
27
28
CTS#
RI#
29
30
NC
DCD#
31
32
RXD
TXD
33
34
DTR#
GND
35
36
DSR#
RTS#
37
38
CTS#
RI#
39
40
NC
RS485:
Signal
Pin
Signal

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DATA-
1
2
NC
DATA+
3
4
NC
NC
5
6
NC
NC
7
8
NC
GND
9
10
(N/A)
2.9 LPT (screen printing: LPT)
On-board 1 set of 2x13 pin (2.0mm) LPT interface. The adapter cable is needed to transfer the LPT to the
standard parallel interface for use. Users can connect it to equipment like printer according to their
actual requirements.
LPT (screen printing: LPT)
Signal
Pin
Signal
STB
1
2
AFD
LPT_ PPD0
3
4
ERROR
LPT_ PPD1
5
6
INIT
LPT_ PPD2
7
8
SLIN
LPT_ PPD3
9
10
GND
LPT_ PPD4
11
12
GND
LPT_ PPD5
13
14
GND
LPT_ PPD6
15
16
GND
LPT_ PPD7
17
18
GND
ACK
19
20
GND
BUSY
21
22
GND
PE
23
24
GND
SLCT
25
26
(NC)
2.10 Expansion Slots (screen printing: M.2_S, M.2_E, PCIe 4X)
1x M.2 Key E, type 2230 for Wi-Fi card.
2.11 PCIe Slots (screen printing: PCIe16X, PCIe1X)
Both of PCIe slots supports PCI Express 3.0, the PCIe 16X is mainly used for external graphics cards, while

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PCIe 1X is mainly used for external network cards and other devices.
2.12 GPIO (screen printing: JGPIO)
The board is equipped with a set of 2 x 5pin as JGPIO pin (2.0mm spacing), supporting 8 programmable
I/O lanes in total.
GPIO (screen printing: JGPIO)
Signal
Pin
Signal
GPP_A18
5_0
1
2
3.3V
GPP_A19
3
4
GPP_C16
GPP_A20
5
6
GPP_C17
GPP_A21
7
8
GPP_C18
GND
9
10
GPP_C19
2.13 PS/2 (screen printing: PS2)
Pin
Signal
1
+5V
2
KB_DATA
3
KB_CLK
4
MS_ DATA
5
MS_CLK
6
GND
2.14 Switch panel pin (screen printing: JPOWER1)
The front control panel interfaces are to connect the functional buttons and indicators on the front
panel.
JPOWER1:
Signal
Pin
Signal
HDD_LED+
1
2
PWR_LED+

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2.15 Hardware Auto Start (screen printing: JAT)
JAT:
Settings
JAT
Close
Hardware Auto Start
2.16 CMOS Clearance/Retention (screen printing: JCMOS)
CMOS is powered by the on-board button batteries. Clearing CMOS will permanently remove the
previous system settings and restore the board to the original (factory settings) system settings.
Step 1: Turn off the PC and disconnect power adapter.
Step 2: Use the jumper cap to connect the 1st and 2nd headers of JCMOS for about 10 seconds and
disconnect.
Step 3: When starting the device, press the <DEL> button to enter the BIOS, load the optimal default
value and save and exit the settings.
JCOMS:
Settings
JCMOS
Close
Clear the CMOS, restore to factory setting
Open
Normal boot, the default setting
Please do not clear COMS when the PC is connected to power in case of board damages.
HDD_LED-
3
4
PWR_LED-
RSTBTN-
5
6
PWR_ON+
RSTBTN+
7
8
PWR_ON-
NUL
9
10
(NC)