IEI Technology IMBA-H420 User manual

IMBA-H420 ATX Motherboard
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User Manual
IMBA-H420
ATX motherboard supports 14nm LGA1200 Intel® 10th/ 11th
Generation Core™ i9/i7/i5/i3, Celeron® and Pentium®
processor, DDR4, triple displays, 2.5 GbE LAN,
USB 3.2, SATA 6Gb/s, HD Audio and RoHS
MODEL:
Rev. 1.00 –June 8, 2022

IMBA-H420 ATX Motherboard
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Revision
Date
Version
Changes
June 8, 2022
1.00
Initial release

IMBA-H420 ATX Motherboard
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Copyright
COPYRIGHT NOTICE
The information in this document is subject to change without prior notice in order to
improve reliability, design and function and does not represent a commitment on the part
of the manufacturer.
In no event will the manufacturer be liable for direct, indirect, special, incidental, or
consequential damages arising out of the use or inability to use the product or
documentation, even if advised of the possibility of such damages.
This document contains proprietary information protected by copyright. All rights are
reserved. No part of this manual may be reproduced by any mechanical, electronic, or other
means in any form without prior written permission of the manufacturer.
TRADEMARKS
All registered trademarks and product names mentioned herein are used for identification
purposes only and may be trademarks and/or registered trademarks of their respective
owners.

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Manual Conventions
WARNING
Warnings appear where overlooked details may cause damage to the
equipment or result in personal injury. Warnings should be taken
seriously.
CAUTION
Cautionary messages should be heeded to help reduce the chance of
losing data or damaging the product.
NOTE
These messages inform the reader of essential but non-critical
information. These messages should be read carefully as any directions
or instructions contained therein can help avoid making mistakes.

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Table of Contents
1 INTRODUCTION........................................................................................................ 12
1.1 INTRODUCTION......................................................................................................... 13
1.2 FEATURES................................................................................................................. 14
1.3 CONNECTORS ........................................................................................................... 15
1.4 DIMENSIONS............................................................................................................. 16
1.5 DATA FLOW.............................................................................................................. 17
1.6 TECHNICAL SPECIFICATIONS .................................................................................... 18
2 PACKING LIST........................................................................................................... 20
2.1ANTI-STATIC PRECAUTIONS...................................................................................... 21
2.2 UNPACKING PRECAUTIONS....................................................................................... 21
2.3 PACKING LIST........................................................................................................... 22
2.4 OPTIONAL ITEMS...................................................................................................... 23
3 CONNECTORS ........................................................................................................... 24
3.1 PERIPHERAL INTERFACE CONNECTORS..................................................................... 25
3.1.1 IMBA-H420 Layout.......................................................................................... 25
3.1.2 Peripheral Interface Connectors ..................................................................... 26
3.1.3 External Interface Panel Connectors............................................................... 27
3.2 INTERNAL PERIPHERAL CONNECTORS ...................................................................... 28
3.2.1 CPU 12V Power Connector............................................................................. 28
3.2.2 PCIe Power Connector.................................................................................... 29
3.2.3 ATX Power Connector ..................................................................................... 30
3.2.4 Battery Connector............................................................................................ 31
3.2.5 Chassis Intrusion Connector............................................................................ 32
3.2.6 Digital I/O Connector...................................................................................... 34
3.2.7 EC Debug Connector....................................................................................... 35
3.2.8 Debug Connector............................................................................................. 36
3.2.9 Fan Connector (CPU)...................................................................................... 37

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3.2.10 Fan Connectors (System)............................................................................... 38
3.2.11 Front Panel Connector................................................................................... 39
3.2.12 Internal Audio Connector .............................................................................. 40
3.2.13 I2C Connector ................................................................................................ 41
3.2.14 SMBus Connector .......................................................................................... 42
3.2.15 LAN Link LED Connector.............................................................................. 43
3.2.16 PCI Slots ........................................................................................................ 44
3.2.17 PCIE x4 Slot................................................................................................... 45
3.2.18 PCIe x16 Slot ................................................................................................. 46
3.2.19 Onboard Power Button.................................................................................. 47
3.2.20 DDR4 DIMM Sockets .................................................................................... 48
3.2.21 SATA 6Gb/s Connectors................................................................................. 49
3.2.22 Serial Port, RS-232........................................................................................ 50
3.2.23 Serial Port, RS-232/422/485.......................................................................... 51
3.2.24 Flash SPI ROM Connector............................................................................ 52
3.2.25 EC SPI Flash Connector................................................................................ 53
3.2.26 Intennal DP++ Connector............................................................................. 54
3.2.27 Internal USB 2.0 Connectors......................................................................... 55
3.2.28 VGA Firmware Refresh Connector................................................................ 56
3.3 EXTERNAL PERIPHERAL INTERFACE CONNECTOR PANEL ......................................... 57
3.3.1 External HD Audio Jack.................................................................................. 58
3.3.2 External Keyboard/Mouse and USB 2.0 Combo Connectors.......................... 59
3.3.3 External HDMI Combo Connector.................................................................. 60
3.3.4 External 2.5GbE RJ-45 and dual USB 3.2 Gen 1 Combo Connectors............ 61
3.3.5 External RS-232 and VGA Combo Connectors ............................................... 62
3.3.6 External Dual USB 3.2 Gen 1 Connectors ...................................................... 64
4 INSTALLATION ......................................................................................................... 65
4.1ANTI-STATIC PRECAUTIONS...................................................................................... 66
4.2 INSTALLATION CONSIDERATIONS.............................................................................. 66
4.3 SOCKET LGA1200 CPU INSTALLATION................................................................... 68
4.4 SOCKET LGA1200 COOLING KIT INSTALLATION ..................................................... 71
4.5 DIMM INSTALLATION.............................................................................................. 73
4.6 SYSTEM CONFIGURATION......................................................................................... 74
4.6.1 AT/ATX Power Mode Setting ........................................................................... 74

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4.6.2 Clearing CMOS ............................................................................................... 75
4.6.3 Flash Descriptor Security Override Jumper.................................................... 76
4.7 INTERNAL PERIPHERAL DEVICE CONNECTIONS........................................................ 77
4.7.1 SATA Drive Connection ................................................................................... 77
4.8 SOFTWARE INSTALLATION ........................................................................................ 79
4.9 DRIVER DOWNLOAD ................................................................................................ 79
4.10 INTEL®AMT SETUP PROCEDURE........................................................................... 81
A REGULATORY COMPLIANCE.............................................................................. 82
B PRODUCT DISPOSAL.............................................................................................. 84
C ERROR BEEPCODE ................................................................................................ 86
C.1 PEI BEEP CODES ..................................................................................................... 87
C.2 DXE BEEP CODES ................................................................................................... 87
D HAZARDOUS MATERIALS DISCLOSURE......................................................... 88
D.1 ROHS II DIRECTIVE (2015/863/EU) ....................................................................... 89
D.2 CHINA ROHS........................................................................................................... 90

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List of Figures
Figure 1-1: IMBA-H420 .................................................................................................................13
Figure 1-2: Connectors ................................................................................................................15
Figure 1-3: IMBA-H420 Dimensions (mm)..................................................................................16
Figure 1-4: Data Flow Diagram....................................................................................................17
Figure 3-1: Peripheral Interface Connectors .............................................................................25
Figure 3-2: ATX CPU 12V Power Connector Location..............................................................28
Figure 3-3: PCIe Power Connector Location .............................................................................29
Figure 3-4: ATX Power Connector Location ..............................................................................30
Figure 3-5: Battery Connector Location.....................................................................................32
Figure 3-6: Chassis Intrusion Connector Location...................................................................33
Figure 3-7: Digital I/O Connector Location ................................................................................34
Figure 3-8: EC Debug Connector Location................................................................................35
Figure 3-9: Debug Connector Location......................................................................................36
Figure 3-10: CPU Fan Connector Location................................................................................37
Figure 3-11: System Fan Connector Locations.........................................................................38
Figure 3-12: Front Panel Location ..............................................................................................39
Figure 3-13: Internal Audio Connector Location.......................................................................40
Figure 3-14: I2C Connector Location ..........................................................................................41
Figure 3-15: SMBus Connector Location...................................................................................42
Figure 3-16: JP2, JP3 Connector Locations ..............................................................................43
Figure 3-17: PCI Slot Locations ..................................................................................................44
Figure 3-18: PCIe x4 Slot Locations ...........................................................................................45
Figure 3-19: PCIe x16 Slot Locations .........................................................................................46
Figure 3-20: Power Button Location...........................................................................................47
Figure 3-21: DDR4 DIMM Location..............................................................................................48
Figure 3-22: SATA 6Gb/s Connector Locations ........................................................................49
Figure 3-23: RS-232 Serial Port Connector Location................................................................50
Figure 3-24: RS-232/422/485 Connector Location.....................................................................51
Figure 3-25: Flash SPI ROM Connector Location .....................................................................52
Figure 3-26: EC SPI Flash Connector Location.........................................................................53
Figure 3-27: DP++ Connector Location......................................................................................54

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Figure 3-28: Internal USB 2.0 Connector Locations .................................................................55
Figure 3-29: VGA Firmware Refresh Connector Location........................................................56
Figure 3-30: External Peripheral Interface Connector ..............................................................57
Figure 3-31: Audio Connector.....................................................................................................58
Figure 3-32: PS2, USB 2.0 Connector.........................................................................................59
Figure 3-33: HDMI Connector......................................................................................................60
Figure 3-34: RJ45 & USB 3.2 Gen 1 Connector .........................................................................62
Figure 3-35: COM1 Serial Port Pinout Locations ......................................................................62
Figure 3-36: VGA Connector .......................................................................................................63
Figure 3-37: Dual USB 3.2 Gen 1.................................................................................................64
Figure 4-1: Disengage The CPU Socket Load Lever.................................................................68
Figure 4-2: Remove Protective Cover.........................................................................................69
Figure 4-3: Insert The Socket LGA1200 CPU.............................................................................70
Figure 4-4: Close The Socket LGA1200......................................................................................70
Figure 4-5: Cooling Kit Support Bracket....................................................................................72
Figure 4-6: DIMM Installation.......................................................................................................73
Figure 4-7: AT/ATX Power Mode Switch Location ....................................................................74
Figure 4-8: Clear CMOS Jumper Location .................................................................................75
Figure 4-9: Flash Descriptor Security Override Jumper Location ..........................................76
Figure 4-10: SATA Drive Cable Connection...............................................................................77
Figure 4-11: SATA Power Drive Connection..............................................................................78
Figure 4-12: IEI Resource Download Center..............................................................................79

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List of Tables
Table 1-1: IMBA-H420 Specifications .........................................................................................19
Table 2-1: Packing List.................................................................................................................22
Table 2-2: Optional Items.............................................................................................................23
Table 3-1: Peripheral Interface Connectors...............................................................................27
Table 3-2: Rear Panel Connectors ..............................................................................................27
Table 3-3: ATX CPU 12V Power Connector Pinouts .................................................................28
Table 3-4: PCIe Power Connector Pinouts.................................................................................29
Table 3-5: ATX Power Connector Pinouts..................................................................................31
Table 3-6: Chassis Intrusion Connector Pinouts ......................................................................33
Table 3-7: Digital I/O Connector Pinouts....................................................................................34
Table 3-8: Digital I/O Connector Pinouts....................................................................................35
Table 3-9: Debug Connector Pinouts .........................................................................................36
Table 3-10: CPU Fan Connector Pinouts....................................................................................37
Table 3-11: System Fan Connector Pinouts ..............................................................................38
Table 3-12: Front Panel Pinouts..................................................................................................39
Table 3-13: Internal Audio Connector Pinouts ..........................................................................40
Table 3-14: I2C Connector Pinouts.............................................................................................41
Table 3-15: SMBus Connector Pinouts ......................................................................................42
Table 3-16: JP2 Connector Pinouts ............................................................................................43
Table 3-17: JP3 Connector Pinouts ............................................................................................43
Table 3-18: SATA 6Gb/s Connector Pinouts..............................................................................49
Table 3-19: RS-232 Serial Port Connector Pinouts ...................................................................50
Table 3-20: RS-232/422/485 Connector Pinouts ........................................................................51
Table 3-21: DB-9 RS-232/422/485 Pinouts..................................................................................52
Table 3-22: Flash SPI ROM Connector Pinouts.........................................................................53
Table 3-23: EC SPI Flash Connector Pinouts ............................................................................53
Table 3-24: DP++ Connector Pinouts .........................................................................................54
Table 3-25: Internal USB 2.0 Connector Pinouts.......................................................................55
Table 3-26: VGA Firmware Refresh Connector Pinouts ...........................................................56
Table 3-27: USB 2.0 Port Pinouts................................................................................................59
Table 3-28: PS2 Port Pinouts.......................................................................................................59

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Table 3-29: HDMI Connector Pinouts .........................................................................................60
Table 3-30: USB 3.2 Gen 1 Pinouts.............................................................................................61
Table 3-31: RJ45 Pinouts.............................................................................................................61
Table 3-32: COM1 Connector Pinouts........................................................................................62
Table 3-33: VGA Connector Pinouts...........................................................................................63
Table 3-34: External USB 3.2 Gen 1 Connector Pinouts...........................................................64
Table 4-1: AT/ATX Power Mode Switch Settings.......................................................................74
Table 4-2: Clear CMOS Jumper Pinouts.....................................................................................75
Table 4-3: Flash Descriptor Security Override Jumper Pinouts..............................................76

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Chapter
1
1Introduction

IMBA-H420 ATX Motherboard
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1.1 Introduction
Figure 1-1: IMBA-H420
The IMBA-H420 is an ATX motherboard. It accepts a Socket LGA1200 10th/11th
Generation Intel® Core™ i9/i7/i5/i3, Pentium® or Celeron® processor and supports two
288-pin 2933MHz dual-channel DDR4 SDRAM DIMM modules up to 64 GB. The
integrated Intel® H420E chipset supports four SATA 6Gb/s drives. Moreover, the IMBA-
H420 includes DP++, HDMI and VGA interfaces for triple displays.
The IMBA-H420 provides one 2.5GbE interfaces through the Intel® I225V controllers.
Expansion and I/O include four PCI slots, one PCIe x16 slot, one PCIe x4 slot, one RS-
232, four USB 3.2 Gen 1, two USB 2.0 on the rear panel.

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1.2 Features
Some of the IMBA-H420 motherboard features are listed below:
ATX form factor
LGA1200 10th/11th Generation Intel® Core™ i9/i7/i5/i3, Pentium® or
Celeron® processor supported
Intel® H420E chipset
Two 288-pin 2933MHz dual-channel DDR4 DIMMs support up to 128 GB
One Intel® I225V 2.5GbE controller
Supports PCI Express Generation 3.0
Triple display by DP++, HDMI and VGA interfaces
Four SATA 6Gb/s connectors (no RAID)
Four USB 3.2 Gen 1 ports and four USB 2.0 ports
One PCIe Gen3 x16 slot
One PCIe Gen3 x4 slot
Four PCI slots
Six serial ports (one on rear panel; the others via internal pin header)
The optional expansion cards provide more choices to meet user’s demand
TPM 2.0 security function supported by PTT (Plateform Trust Technology)，
based on BIOS setting
High Definition Audio
RoHS compliant

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1.3 Connectors
The connectors on the IMBA-H420 are shown in the figure below.
Figure 1-2: Connectors

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1.4 Dimensions
The main dimensions of the IMBA-H420 are shown in the diagram below.
Figure 1-3: IMBA-H420 Dimensions (mm)

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1.5 Data Flow
Figure 1-4 shows the data flow between the system chipset, the CPU and other
components installed on the motherboard.
Figure 1-4: Data Flow Diagram

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1.6 Technical Specifications
The IMBA-H420 technical specifications are listed 74 7Hbelow.
Specification/Model
IMBA-H420
Form Factor
ATX
CPU Supported
LGA1200 10th/11th Generation Intel® Core™ i9/i7/i5/i3,
Pentium® or Celeron® CPU
Chipset
Intel® H420E
Memory
Two 288-pin 2933 MHz dual-channel unbuffered DDR4
SDRAM DIMMs supported (system max. 64 GB)
Graphics Engine
Up to Intel® UHD Graphics 630; Intel® HD Graphics Gen 9
Engines with 16 low-power execution units, supporting
DX2015, OpenGL 5.x, OpenCL2.x and ES 2.0
Display Output
Triple display
1 x VGA (up to 1920 x 1200@60Hz)
1 x Internal DP++ (up to 4096 x 2304@60Hz)
1 x HDMI (up to 4096 x 2160@30Hz)
Audio
Realtek ALC888S HD codec
3 x Audio Jack (Line-in, Line-out, Mic-in)
BIOS
AMI UEFI BIOS
Watchdog Timer
Software programmable supports 1~255 sec. system reset
Expansions
1 x PCIe Gen3 x16
1 x PCIe Gen3 x4
4 x PCI
I/O Interface Connectors
Chassis Intrusion
One 2-pin header
Digital I/O
1 x 8-bit digital I/O (2x5 pin)
Ethernet
LAN1: Intel I225-V GbE controller （colay I225-LM）

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Fan
1 x CPU fan connector (1x4 pin)
2 x System fan connector (1x4 pin)
Front Panel
1 x Front Panel (2 x 7 pin, Power LED, HDD LED, Speaker,
Power Button, Reset Button)
I2C
1 x I²C (1x4 pin)
LAN LED
2 x LAN LED (1x2 pin)
Serial SATA
Four SATA 6Gb/s connectors
Serial Ports
1 x RS-232/422/485 (2x5 pin, P=2.54)
4 x RS-232 (2x5 pin, P=2.54)
SMBus
One 4-pin wafer connector
USB Ports
4 x USB 3.2 Gen 1 Type-A on the rear IO
2 x USB 2.0 Type-A on the rear IO
2 x USB 2.0 via pin header
Environmental and Power Specifications
Power Supply
AT/ATX power supply
Power
Consumption
[email protected], 5V@14.16A, [email protected]
(Intel® Core™ i9-10900E CPU with four 32 GB 3200 MHz
DDR4 memory)
Operating
Temperature
0ºC ~ 60ºC
Storage
Temperature
-30ºC ~ 70ºC
Operating Humidity
5% ~ 95% (non-condensing)
Physical Specifications
Dimensions
244 mm x 305 mm
Weight (GW/NW)
1200 g/700 g
Table 1-1: IMBA-H420 Specifications

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Chapter
2
2Packing List