AXIOMTEK IMB502 User manual

IMB502
Intel®Socket 1151 CoreTM i7/ i5/ i3
Processors ATX Industrial
Motherboard
User’s Manual

ii
Disclaimers
This manual has been carefully checked and believed to contain accurate information.
Axiomtek Co., Ltd. assumes no responsibility for any infringements of patents or any third
party’s rights, and any liability arising from such use.
Axiomtek does not warrant or assume any legal liability or responsibility for the accuracy,
completeness or usefulness of any information in this document. Axiomtek does not make any
commitment to update the information in this manual.
Axiomtek reserves the right to change or revise this document and/or product at any time
without notice.
No part of this document may be reproduced, stored in a retrieval system, or transmitted, in
any form or by any means, electronic, mechanical, photocopying, recording, or otherwise,
without the prior written permission of Axiomtek Co., Ltd.
CAUTION
If you replace wrong batteries, it causes the danger of explosion. It is recommended by the
manufacturer that you follow the manufacturer’s instructions to only replace the same or
equivalent type of battery, and dispose of used ones.
Copyright 2018 Axiomtek Co., Ltd.
All Rights Reserved
October 2018, Version A4
Printed in Taiwan

iii
ESD Precautions
Computer boards have integrated circuits sensitive to static electricity. To prevent chipsets
from electrostatic discharge damage, please take care of the following jobs with precautions:
Do not remove boards or integrated circuits from their anti-static packaging until you are
ready to install them.
Before holding the board or integrated circuit, touch an unpainted portion of the system
unit chassis for a few seconds. It discharges static electricity from your body.
Wear a wrist-grounding strap, available from most electronic component stores, when
handling boards and components.
Trademarks Acknowledgments
Axiomtek is a trademark of Axiomtek Co., Ltd.
Intel®and Celeron®are trademarks of Intel Corporation.
Windows®is a trademark of Microsoft Corporation.
AMI is a trademark of American Megatrend Inc.
IBM, PC/AT, PS/2, VGA are trademarks of International Business Machines Corporation.
Other brand names and trademarks are the properties and registered brands of their
respective owners.

iv
Table of Contents
Disclaimers ......................................................................................................ii
ESD Precautions............................................................................................. iii
Chapter 1 Introduction............................................. 1
1.1 Features................................................................................................2
1.2 Specifications........................................................................................2
Chapter 2 Board and Pin Assignments.................... 5
2.1 Board Layout.........................................................................................5
2.2 Rear I/O.................................................................................................6
2.3 Jumper Settings....................................................................................7
2.3.1 Clear CMOS (JP1) ...................................................................................... 8
2.3.2 AT/ATX Mode Select (JP2).......................................................................... 8
2.3.3 COM1 Mode Select (JP3, JP5, JP6)........................................................... 9
2.3.4 COM1 Data/Power Select (JP4) ................................................................. 9
2.3.5 COM2 Data/Power Select (JP8) ................................................................. 9
2.4 Connectors..........................................................................................10
2.4.1 mSATA Slot (CN4) (Optional).....................................................................11
2.4.2 Front Panel Header (CN5) ........................................................................ 12
2.4.3 GPIO Header (CN6).................................................................................. 12
2.4.4 COM1 Connector (CN9)............................................................................ 13
2.4.5 LAN and USB 3.0 Connectors (CN11 and CN12)..................................... 14
2.4.6 Audio Jack (CN13).................................................................................... 14
2.4.7 Front Audio Header (CN14) ...................................................................... 15
2.4.8 COM Headers (CN15~CN18 and CN44).................................................. 15
2.4.9 HDMI Connector (CN20)........................................................................... 16
2.4.10 Internal USB Headers (CN23~CN24) ....................................................... 16
2.4.11 SATA 3.0 Connectors (CN26~CN30) ........................................................ 17
2.4.12 SMBus Header (CN31) ............................................................................. 17
2.4.13 Voltage Monitor Header (CN32)................................................................ 17
2.4.14 Power Input Connectors (CN33 and CN34).............................................. 18
2.4.15 PCI-Express x4 Slots (CN39, CN40 and CN46) ...................................... 19
2.4.16 Fan Connectors (CN41~CN43)................................................................. 20
2.4.17 Internal USB 3.0 Connector (CN47).......................................................... 21
2.4.18 VGA and DVI-D Connector (CN50)........................................................... 22
Chapter 3 Hardware Description ........................... 23
3.1 Microprocessors..................................................................................23
3.2 BIOS....................................................................................................23

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3.3 System Memory..................................................................................23
Chapter 4 AMI BIOS Setup Utility .......................... 25
4.1 Starting................................................................................................25
4.2 Navigation Keys..................................................................................25
4.3 Main Menu ..........................................................................................27
4.4 Advanced Menu..................................................................................28
4.5 Chipset Menu......................................................................................44
4.6 Security Menu .....................................................................................53
4.7 Boot Menu...........................................................................................54
4.8 Save & Exit Menu................................................................................55
Appendix A Watchdog Timer................................... 57
A.1 About Watchdog Timer........................................................................57
A.2 Sample Program .................................................................................57
Appendix B BIOS Flash Utility ................................ 59

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IMB502 LGA1151 ATX Motherboard
Introduction 1
Chapter 1
Introduction
The IMB502 is an advanced ATX industrial motherboard based on the 7th / 6th Generation
Intel® Core™ i7/ i5/ i3/ Pentium®and Celeron®processors (Kabylake-S / Skylake-S) in
LGA1151 Socket with Intel®Q170. The optimized IMB502 is specially designed for better
computing and visual performance; ideally used in every major industry for tasks ranging from
financial modeling to designing complex buildings and vehicles. With its built-in Intel®HD
Graphics 530/510, this industrial grade motherboard delivers great 3D visual performance with
triple display capability through DVI-D, HDMI and VGA ports demanded by professional-grade
CAD and media/entertainment fields.
In addition, the IMB502 supports Intel®Turbo Boost 2.0 technology, Intel®Hyper-Threading
technology, Intel®HD Graphics with DX11 support, 3-D Tri-Gate transistors, 64GB DDR4
2133/1866MHz memory, and PCI-Express 3.0 x16 slot. It also features Intel®Active
Management Technology 9.0 (iAMT), SATA RAID, as well as PCI-Express x4 expansion
making it ideal for applications with added security features.

IMB502 LGA1151 ATX Motherboard
2 Introduction
1.1 Features
LGA1151 Socket 7th/6th Generation Intel®Core™i7/i5/i3, Pentium®and Celeron®
processors (Kabylake-S/Skylake-S) up to 65W
4 DDR4 2133/1866MHz DIMM with maximum capacity up to 64GB (max. 16GB per slot)
DVI-D, HDMI, and VGA with triple view supported
5 SATA-600 RAID 0/1/5/10
4 USB 3.0 and 8 USB 2.0 ports
mSATA supported
PCI-Express Mini Card
1.2 Specifications
CPU
LGA1151 Socket 6th Generation Intel®Core™ i7/ i5/ i3, Pentium®and Celeron®
processors.
Chipset
Intel®Q170.
BIOS
AMI BIOS.
System Memory
Four 288-pin DIMM sockets.
Maximum up to 64GB DDR4 memory (max. 16GB per slot).
Support 2133/1866MHz.
Onboard Multi I/O
One PS/2 keyboard and mouse.
Six serial ports:
- Five RS-232 (internal box headers).
- One RS-232/422/485 (rear I/O).
USB Interface
Four USB 3.0 ports.
Eight USB 2.0 ports.
Ethernet
LAN1: 1000/100/10Mbps Gigabit/Fast Ethernet supports Wake-on-LAN, PXE Boot
ROM, iAMT with Intel®i219LM.
LAN2: 1000/100/10Mbps Gigabit/Fast Ethernet supports Wake-on-LAN, PXE Boot
ROM with Intel®i210AT.
Serial ATA
Five SATA-600 with RAID 0/1/5/10.
One mSATA.(Optional)
Audio
Realtek ALC662 5.1 channel HDA Codec.
Support MIC-in/line-in/line-out.

IMB502 LGA1151 ATX Motherboard
Introduction 3
Display
One 15-pin D-Sub as VGA connector. Resolution max. up to 1920x1200 @60Hz.
One HDMI 1.4b with resolution max. up to 4096x2160 @24Hz.
One DVI-D with resolution max. up to 1920×1200 @60Hz.
Expansion Interface
One PCI-Express x16 slot.
Three PCI-Express x4 slots.
There PCI slots.
Power Input
One ATX power input connector.
One 12V ATX power input connector for CPU Power.
Operating Temperature
0°C ~ 60°C.
Storage Temperature
-20°C ~ 75°C.
Form Factor
305 x 244mm.
Note
All specifications and images are subject to change without notice.

IMB502 LGA1151 ATX Motherboard
4 Introduction
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IMB502 LGA1151 ATX Motherboard
Board and Pin Assignments 5
Chapter 2
Board and Pin Assignments
2.1 Board Layout

IMB502 LGA1151 ATX Motherboard
6 Board and Pin Assignments
2.2 Rear I/O
Jumpers/Headers/Connectors
1
Internal USB Headers (CN23~CN24)
18
PCI Slots (CN36~CN38)
2
GPIO Header (CN6)
19
mSATA Slot (CN4)
3
Debug Header
20
SATA 3.0 Connectors (CN26~CN30)
4
COM3~COM6 Headers (CN15~CN18)
21
ATX1 Power Input Connector (CN34)
5
AT/ATX Mode Select Jumper (JP2)
22
DIMM Sockets (DIMM1~DIMM4)
6
Front Panel Header (CN5)
23
USB3.0 Box header (CN47)
7
SMBus Header (CN31)
24
CPU Socket
8
System Fan Connectors (CN42, CN43)
25
ATX2 CPU Power Input Connector (CN33)
9
Voltage Monitor Header (CN32)
26
PCI-Express x4 Slots (CN39, CN40, CN46)
10
CPU Fan Connector (CN41)
27
PCI-Express x16 Slot (CN1)
11
COM2 Header (CN44)
31
PS/2 Keyboard and Mouse Connector +
USB 2.0 2 Ports (CN48)
12
COM2 Data/Power Select Jumper (JP8)
32
DVI-D + VGA Connector (CN50)
13
COM1 Mode Select Jumper-1 (JP3)
33
COM1 Connector (CN9)
14
COM1 Mode Select Jumpers-2 (JP5, JP6)
34
LAN1 and LAN2 Connectors (CN11, CN12)
15
COM1 Data/Power Select Jumper (JP4)
35
Audio Jack (CN13)
16
Front Audio Header (CN14)
36
HDMI Connector (CN20)
17
Clear CMOS Jumper (JP1)
37
USB 3.0 Connectors (CN11, CN12)
Note
A direct contact CPU cooler back plate is not available for IMB502.

IMB502 LGA1151 ATX Motherboard
Board and Pin Assignments 7
Note
To identify the first pin of a header or jumper, please refer to the following
information:
Usually, there is a thick line or a triangle near the header or jumper pin 1.
Square pad, which you can find on the back of the motherboard, is usually
used for pin 1.
2.3 Jumper Settings
Jumper is a small component consisting of jumper clip and jumper pins. Install jumper clip on 2
jumper pins to close. And remove jumper clip from 2 jumper pins to open. The following
illustration shows how to set up jumper.
Before applying power to IMB502 Series, please make sure all of the jumpers are in factory
default position. Below you can find a summary table of all jumpers and onboard default
settings.
Note
Once the default jumper setting needs to be changed, please do it under power-off
condition.
Jumper
Description
Setting
JP1
Clear CMOS
Default: Normal Operation
1-2 Close
JP2
AT/ATX Power Mode Select
Default: ATX Mode
1-2 Close
JP3
COM1 RS-232/422/485 Mode Select
Default: RS-232
1-2 Close
JP5
3-5, 4-6 Close
JP6
3-5, 4-6 Close
JP4/8
COM1/2 Data/Power Select
Default: RS-232 Data
3-5 Close
4-6 Close

IMB502 LGA1151 ATX Motherboard
8 Board and Pin Assignments
2.3.1 Clear CMOS (JP1)
This jumper (3x1-pin p=2.54mm) allows you to clear the Real Time Clock (RTC) RAM in
CMOS. You can clear the CMOS memory of date, time, and system setup parameters by
erasing the CMOS RTC RAM data. The onboard button cell battery powers the RAM
data in CMOS, which includes system setup information such as system passwords.
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Remove the onboard battery.
3. Move the jumper clip from pins 1-2 (default) to pins 2-3. Keep the clip on pins 2-3
for about 5~10 seconds, then move the clip back to pins 1-2.
4. Re-install the battery.
5. Plug the power cord and turn ON the computer.
6. Hold down the <Del> key during the boot process and enter BIOS setup to re-enter
data.
2.3.2 AT/ATX Mode Select (JP2)
This 3x1-pin p=2.00mm jumper allows you to select AT or ATX power mode.
Function
Setting
Normal operation (Default)
1-2 close
Clear CMOS
2-3 close
Function
Setting
ATX mode (Default)
1-2 close
AT mode
2-3 close

IMB502 LGA1151 ATX Motherboard
Board and Pin Assignments 9
2.3.3 COM1 Mode Select (JP3, JP5, JP6)
Use these jumpers (3x2-pin p=2.54mm) to set COM1 port to operate in RS-232, RS-422
or RS-485 communication mode.
JP3 JP5 JP6
2.3.4 COM1 Data/Power Select (JP4)
The COM1 port has +5V power capability on DCD# and +12V on RI# by setting this
jumper (3x2-pin p=2.54mm).
2.3.5 COM2 Data/Power Select (JP8)
The COM2 port has +5V power capability on DCD# and +12V on RI# by setting this
jumper (3x2-pin p=2.54mm).
Function
Setting
RS-232 mode
(Default)
JP3 1-2 close
JP5 3-5, 4-6 close
JP6 3-5, 4-6 close
RS-422 mode
JP3 3-4 close
JP5 1-3, 2-4 close
JP6 1-3, 2-4 close
RS-485 mode
JP3 5-6 close
JP5 1-3, 2-4 close
JP6 1-3, 2-4 clos
Function
Setting
Power: Set COM1 pin 1 to +5V
1-3 close
Data: Set COM1 pin 1 to DCD# (Default)
3-5 close
Power: Set COM1 pin 9 to +12V
2-4 close
Data: Set COM1 pin 9 to RI# (Default)
4-6 close
Function
Setting
Power: Set COM2 pin 1 to +5V
1-3 close
Data: Set COM2 pin 1 to DCD# (Default)
3-5 close
Power: Set COM2 pin 8 to +12V
2-4 close
Data: Set COM2 pin 8 to RI# (Default)
4-6 close

IMB502 LGA1151 ATX Motherboard
10 Board and Pin Assignments
2.4 Connectors
Signals go to other parts of the system through connectors. Loose or improper connection
might cause problems, please make sure all connectors are properly and firmly connected.
Here is a summary table showing connectors on the hardware.
Connector
Description
CN1
PCI-Express x16 Slot
CN4
mSATA Slot (optional)
CN5
Front Panel Header
CN6
GPIO Header
CN9
COM1 Connector
CN11, CN12
LAN and USB 3.0 Connectors
CN13
Audio Jack
CN14
Front Audio Header
CN15~CN18, CN44
COM Headers
CN20
HDMI Connector
CN23~CN24
Internal USB Headers
CN26~CN30
SATA 3.0 Connectors
CN31
SMBus Header
CN32
Voltage Monitor Header
CN33
ATX2 CPU Power Input Connector
CN34
ATX1 24-pin Power Input Connector
CN36~CN38
PCI Slots
CN39, CN40, CN46
PCI-Express x4 Slots
CN41
CPU Fan Connector
CN42~CN43
System Fan Connectors
CN47
USB 3.0 Box header for 2 ports
CN48
PS/2 and USB 2.0 2 ports
CN49
USB 2.0 Type-A 180D Connector
CN50
DVI-D & VGA Connector

IMB502 LGA1151 ATX Motherboard
Board and Pin Assignments 11
2.4.1 mSATA Slot (CN4) (Optional)
Note
Screw type is M2*0.4.
Pin
Signal
Pin
Signal
1
N/C
2
+3.3V_DUAL
3
N/C
4
GND
5
N/C
6
+1.5V
7
N/C
8
N/C
9
GND
10
N/C
11
N/C
12
N/C
13
N/C
14
N/C
15
GND
16
N/C
17
N/C
18
GND
19
N/C
20
N/C
21
GND
22
BUF_PLT_RST_N
23
SATA0_RX_DP
24
+3.3V_DUAL
25
SATA0_RX_DN
26
GND
27
GND
28
+1.5V
29
GND
30
SMB_CLK_RESUME
31
SATA0_TX_DN
32
SMB_DATA_RESUME
33
SATA0_TX_DP
34
GND
35
GND
36
USB9-
37
GND
38
USB9+
39
+3.3V_DUAL
40
GND
41
+3.3V_DUAL
42
N/C
43
GND
44
N/C
45
N/C
46
N/C
47
N/C
48
+1.5V
49
N/C
50
GND
51
N/C
52
+3.3V_DUAL

IMB502 LGA1151 ATX Motherboard
12 Board and Pin Assignments
2.4.2 Front Panel Header (CN5)
This is front panel header (7x2-pin p=2.54mm).
Note
[*]: The buzzer on motherboard will be active when pin 2 and pin 4 is
connected; the external speaker on chassis will be active when pin 2 and
pin 4 is open.
2.4.3 GPIO Header (CN6)
This header (5x2-pin p=2.00mm) is for digital I/O interface.
Note
[*]: “H”or “L”means the default voltage is High or Low level, and GPIO
output is 5V. The GPI or GPO and High or Low level can be selected with
BIOS setting.
Pin
Signal
1
Power LED+
2
SPK- [*]
3
GND
4
BUZZER
5
Power LED-
6
N/C
7
N/C
8
SPK+ [*]
9
PWR-
10
PWR+
11
RESET-
12
RESET+
13
HD LED-
14
HD LED+
Pin
Signal
Pin
Signal
1
SIO_GPO74
(0xA06 Bit4, H) [*]
2
SIO_GPO70
(0xA06 Bit0, H)
3
SIO_GPO75
(0xA06 Bit5, H)
4
SIO_GPO71
(0xA06 Bit1, H)
5
SIO_GPO76
(0xA06 Bit6, H)
6
SIO_GPO72
(0xA06 Bit2, H)
7
SIO_GPO77
(0xA06 Bit7, H)
8
SIO_GPO73
(0xA06 Bit3, H)
9
GND
10
GND

IMB502 LGA1151 ATX Motherboard
Board and Pin Assignments 13
2.4.4 COM1 Connector (CN9)
This is a high rise 9-pin D-Sub connector for COM1 serial port interface. The pin
assignments of RS-232/422/485 are listed in table below.
Note
[*]: Signals of COM1 can be RS-232/422/485 by selecting JP3, JP5 and JP6
(see section 2.3.3).
[**]: Pin 1 of COM1 can be DCD/+5V and pin 9 of COM1 can be RI/+12V by
selecting JP4 (see section 2.3.4).
Pin
RS-232 [*]
RS-422 [*]
RS-485 [*]
1
DCD# [**]
TX-
485-
2
RXD
TX+
485+
3
TXD
RX+
N/C
4
DTR#
RX-
N/C
5
GND
GND
GND
6
DSR#
N/C
N/C
7
RTS#
N/C
N/C
8
CTS#
N/C
N/C
9
RI# [**]
N/C
N/C

IMB502 LGA1151 ATX Motherboard
14 Board and Pin Assignments
LAN
USB
2.4.5 LAN and USB 3.0 Connectors (CN11 and CN12)
The motherboard comes with two high performance plug and play Ethernet interfaces
(RJ-45) which are fully compliant with the IEEE 802.3 standard. Connection can be
established by plugging one end of the Ethernet cable into this RJ-45 connector and the
other end to a 1000/100/10 Base-T hub.
The Universal Serial Bus (compliant with USB 3.0) connectors on the rear I/O are for
installing USB peripherals such as keyboard, mouse, scanner, etc.
Note
Speed LED turns orange for 1000Mbps or green for 100Mbps. The
light is off for 10Mbps.
CN11 supports AMT when chipset is customized into Intel®Q170.
Both CN11 and CN12 support Wake-on-LAN.
2.4.6 Audio Jack (CN13)
Install audio driver, and then attach audio devices to CN5.
Pin
LAN Signal
Pin
LAN Signal
L1
Tx+ (Data
transmission positive)
L2
Tx- (Data transmission
negative)
L3
Rx+ (Data reception
positive)
L4
RJ-1 (For 1000 Base-T
only)
L5
RJ-1 (For 1000
Base-T only)
L6
Rx- (Data reception
negative)
L7
RJ-1 (For 1000
Base-T only)
L8
RJ-1 (For 1000 Base-T
only)
A
Active LED
B
Speed LED
Pin
USB Signal
Pin
USB Signal
1
USB3_POWER
2
USB -
3
USB +
4
GND
5
USB3_SSRX
6
USB3_SSRX+
7
GND
8
USB3_SSTX
9
USB3_SSTX+
Pin Color
Signal
Blue
Line-in
Green
Line-out
Pink
MIC-in