IEI Technology IMBA-H420 User manual

ATX Motherboard Supports 10th/11th Gen. LGA1200 Intel® Core™
i9/i7/i5/i3, Celeron® and Pentium® Processors, DDR4, Triple
Independent Display, 2.5GbE, USB 3.2, SATA 6Gb/s,
HD Audio and RoHS
IMBA-H420
Quick Installation Guide
Version 1.0
March 8, 2022
Package List
IMBA-H420 package includes the following items:
 1 x IMBA-H420 single board computer
 2 x SATA cable
 1 x I/O shielding
 1 x QIG
©2022 Copyright by IEI Integration Corp.
All rights reserved.

2
Specifications
 CPU:
10th/11th Generation LGA1200 Intel® Core™ i9/i7/i5/i3, Celeron®
and Pentium® processors
 Chipset:
Intel® H420
 Memory:
Two 288-pin 2933 MHz dual-channel unbuffered DDR4 SDRAM
DIMM slots supporting up to 128 GB memory
 BIOS:
AMI UEFI BIOS
 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:
1 x VGA (up to 1920 x 1080 @ 60 Hz)
1 x Internal DP++ (up to 4096 x 2304 @ 60 Hz)
1 x HDMI (up to 4096 x 2304 @ 30 Hz)
 Ethernet:
1 x 2.5GbE RJ-45 port via Intel® I225V controller (colay I225-LM)
 External I/O Interface:
1 x RS-232 DB-9
2 x USB 2.0 (Type-A)
4 x USB 3.2 Gen 1 (5Gb/s) (Type-A)
1 x PS/2 keyboard/mouse connector
 Internal I/O Interface:
2 x USB 2.0 (2x4 pin, p=2.54)
4 x RS-232 (2x5 pin, p=2.54)
1 x RS-232/422/485 (2x5 pin, p=2.54)
4 x SATA 6Gb/s (no RAID)

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 Audio:
Realtek ALC888S HD Audio codec supports 7.1-channel
3 x Audio jack (line-in, line-out, mic-in) on rear I/O
1 x Front audio (2x5 pin, p=2.54)
 Front Panel:
1 x Front panel (2x7 pin, p=2.54; power LED, HDD LED, speaker,
power button, reset button)
 LAN LED:
1 x LAN LED (1x2 pin, p=2.0)
 Expansions:
1 x PCIe Gen3 x16 slot
1 x PCIe Gen3 x4 slot
4 x PCI slot
 Digital I/O:
1 x 8-bit digital I/O (2x5 pin, p=2.0)
 SMBus:
1 x SMBus (1x4 pin, p=1.25)
 I
2C:
1 x I2C (1x4 pin, p=1.25)
 Fan Connector:
1 x CPU fan connector (1x4 pin)
2 x System fan connector (1x4 pin)
 Chassis Intrusion:
1 x Chassis intrusion connector (1x2 pin, p=2.54)
 TPM
Intel® PTT (TPM 2.0)
 Power Supply:
ATX/AT power supply
Support AT/ATX mode
ErP/EuP compliant

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 Power Consumption:
[email protected], [email protected], [email protected], 5VSB@0A
(Intel® Core™ i5-10500TE CPU with two 32 GB 2933 MHz DDR4
memory, EuP mode enabled)
 Watchdog Timer:
Software programmable support 1–255 sec. system reset
 Operation Temperature: 0°C – 60°C
 Storage Temperature: -30°C – 70°C
 Operation Humidity: 5% – 95%, non-condensing
 Dimensions: 244 mm x 305 mm
 Weight: GW:1200 g / NW:700 g
 Safety: CE/FCC compliant
All the drivers and utility for the IMBA-
H420 are available on IEI Resource
Download Center. Type IMBA-H420
and press Enter to find all the relevant
software, utilities, and documentation.
To install software from the
downloaded ISO file, mount the file as
a virtual drive to view its content.
IEI Resource Download Center
https://download.ieiworld.com

5
Ordering Information
 IMBA-H420-R10:
ATX Motherboard Supports 10th/11th Gen. LGA1200 Intel® Core™
i9/i7/i5/i3, Celeron® and Pentium® Processors, DDR4, Triple
Independent Display, 2.5GbE, USB 3.2, SATA 6Gb/s, HD Audio and
RoHS
 IMBA-H420-ECO-R10:
ATX Motherboard Supports 10th/11th Gen. LGA1200 Intel® Core™
i9/i7/i5/i3, Celeron® and Pentium® Processors, DDR4, Triple
Independent Display, 2.5GbE, USB 3.2, SATA 6Gb/s, HD Audio,
ECO packing and RoHS
 19800-003100-100-RS:
Dual-port USB cable with bracket, 30mm, p=2.54
 19800-020100-100-RS:
Dual-port RS-232 cable with bracket, 230mm, p=2.54
 32205-000702-200-RS:
RS-232/422/485 cable, 230mm, p=2.54
 32102-000100-200-RS:
SATA power cable, MOLEX 8981-4M to SATA15P, 150mm
 CF-115XA-R10:
High performance LGA1155/1156 cooler kit, 1U chassis compatible,
73W
 CF-1156C-R20:
LGA1155/LGA1156 cooler kit, 1U chassis compatible, 45W
 CF-1156D-R30:
LGA1155/LGA1156 cooler kit, 1U chassis compatible, 65W
 CF-115XE-R10:
High-performance LGA1155/1156 cooler kit, 95W

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Jumpers Setting and Connectors
LABEL FUNCTION
J_ATX_AT1 AT/ATX power mode setting
J_CMOS1 Clear CMOS jumper
J_FLASH1 Flash descriptor security override jumper
FRONT-PANEL1 Internal audio connector
ATX1 ATX power connector
CPU12V1 ATX CPU 12V power connector
BAT1 RTC battery connector
CHASSIS1 Chassis intrusion connector
CHA_DIMM0, CHB_DIMM0 DDR4 DIMM slots
DBG_PORT2 Debug connector
DIO1 Digital I/O connector
DP1 Internal DisplayPort connector
DEBUG_SPI1 EC debug connector
CPU_FAN1, SYS_FAN1,
SYS_FAN2 Fan connectors
F_PANEL1 Front panel connector
I2C1 I2C connector
JP3 LAN1 link LED connector
COM2, COM3, COM4,
COM6 RS-232 serial port connectors
COM5 RS-232/422/485 serial port connector
S_ATA1, S_ATA2,
S_ATA3, S_ATA4 SATA 6Gb/s connectors
SMB1, J_CRTFW1 SMBus connectors
JSPI1 Flash SPI ROM connector
EC_SPI1 Flash EC ROM connector
ATXPWR1 PCIe power connector
USB2 Internal USB 2.0 connector
PCI1, PCI2, PCI3, PCI4 PCI slots
PCIEX4_1 PCIe x4 slot
PCIEX16_1 PCIe x16 slot
PWR_SW1 Onboard power button
AUDIO_CV1 External HD Audio jack

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K/M_USB1 External keyboard/mouse and USB 2.0 combo
connector
LAN1_USB1 External 2.5GbE RJ-45 and dual USB 3.2
Gen 1 combo connector
USB1 External dual USB 3.2 Gen 1 connector
COM1/VGA1 External RS-232 and VGA combo connector
HDMI1 External HDMI connector
J_ATX_AT1: AT/ATX Power Mode Setting
PIN NO. DESCRIPTION
Short 1 - 2 ATX Power Mode (default)
Short 2 - 3 AT Power Mode
J_CMOS1: Clear CMOS Button
Status DESCRIPTION
NC Keep CMOS Setup
(Normal Operation)
Press Clear CMOS Setup
J_FLASH1: Flash Descriptor Security Override Jumper
PIN NO. DESCRIPTION
Short 1-2 Disabled (default)
Short 2-3 Enabled
FRONT-PANEL1: Internal Audio Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 LMIC2-L 2 AUD_GND
3 LMIC2-R 4 PRESENCE#
5 LLINE2-R 6 MIC2-JD
7 FRONT-IO 8 NC
9 LLINE2-L 10 LINE2-JD

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ATX1: ATX Power Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 +3.3V 13 +3.3V
2 +3.3V 14 -12V
3 GND 15 GND
4 +5V 16 PS_ON
5 GND 17 GND
6 +5V 18 GND
7 GND 19 GND
8 Power good 20 -5V
9 5VSB 21 +5V
10 +12V 22 +5V
11 +12V 23 +5V
12 +3.3V 24 GND
CPU12V1: ATX CPU 12V Power Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 GND 5 +12V
2 GND 6 +12V
3 GND 7 +12V
4 GND 8 +12V
BAT1: RTC Battery Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 VBATT 2 GND
CHASSIS1: Chassis Intrusion Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 +3.3VSB 2 CHASSIS_OPEN

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DBG_PORT2: Debug Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 +5V 2 SMBCLK_EC
3 NC 4 SMBDATA_EC
5 GND 6 PLTRST_N
DIO1 : Digital Input/Output Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 GND 2 VCC
3 Output 3 4 Output 2
5 Output 1 6 Output 0
7 Input 3 8 Input 2
9 Input 1 10 Input 0
DP1: Internal DP++ Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 LANE0P 11 GND
2 GND 12 LANE3N
3 LANE0N 13 AUX_CTRL_DET_C
4 LANE1P 14 GND
5 LANE1N 15 AUXP
6 GND 16 GND
7 LANE2P 17 AUXN
8 GND 18 HPD
9 LANE2N 19 GND
10 LANE3P 20 +5V
DEBUG_SPI1: EC Debug Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 NC 4 EDICLK
2 EDICS 5 EDIDI
3 EDIDO 6 GND

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CPU_FAN1: CPU Fan Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 GND 2 +12V
3 FANIO 4 PWM
SYS_FAN1, SYS_FAN2:System Fan Connectors
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 GND 2 +12V
3 FANIO 4 PWM
F_PANEL1: Front Panel Connector
PIN DESCRIPTION PIN DESCRIPTION
PWR
LED
1 PWR_LED+ 2 SPKR+
SPKR
3 NC 4 NC
5 PWR_LED- 6 NC
PWR
BTN
7 PWR_BTN+ 8 SPKR-
9 PWR_BTN- 10 NC
HDD
LED
11 HDD_LED+ 12 Reset+ RESET
13 HDD_LED- 14 Reset-
I2C1: I2C Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 GND 3 I2C_CLK
2 I2C_DATA 4 +5V
JP3: LAN1 Link LED Connector
PIN DESCRIPTION PIN DESCRIPTION
1 +3.3V 2 LAN1_LED_LNK#_ACT

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COM2, COM3, COM4, COM6: RS-232 Serial Port Connectors
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 DCD 2 DSR
3 RXD 4 RST
5 TXD 6 CTS
7 DTR 8 RI
9 GND 10 GND
COM5: RS-232/422/485 Serial Port Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 DCD 2 DSR
3 RXD 4 RST
5 TXD 6 CTS
7 DTR 8 RI
9 GND 10 GND
S_ATA1, S_ATA2, S_ATA3, S_ATA4: SATA 6Gb/s Connectors
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 GND 5 SATA_RX‐
2 SATA_TX+ 6 SATA RX+
3 SATA_TX‐ 7 GND
4 GND 8 N/C

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SMB1: SMBus Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 GND 3 SMB_CLK
2 SMB_DATA 4 +5V
J_CRTFW1: SMBus Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 SMB_CLK 3 GND
2 SMB_DATA
JSPI1: Flash SPI ROM Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 +3.3V 4 SPI_CLK
2 SPI_CS# 5 SPI_SI
3 SPI_SO 6 GND
EC_SPI1: Flash EC ROM Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 SPI_CS# 2 +3.3V
3 SPI_SO 4 HOLD#_EC
5 EC_DET_FLASH 6 SPI_CLK
7 GND 8 SPI_SI
ATXPWR1: PCIe Power Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 +12V 3 GND
2 GND 4 +5V

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USB2: Internal USB 2.0 Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 VCC 2 GND
3 USB_DATA- 4 USB_DATA+
5 USB_DATA+ 6 USB_DATA-
7 GND 8 VCC
AUDIO_CV1: External Audio Jacks
Jack Color DESCRIPTION
Blue Line-in: CD/DVD or other audio source input port
Green Line-out: connect this port to headphone or speaker
Pink Microphone: connect this port to microphone
LAN1_USB1
External USB 3.2 Gen 1 Connectors
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 VCC 10 VCC
2 USB_DATA- 11 USB_DATA-
3 USB_DATA+ 12 USB_ DATA+
4 GND 13 GND
5 USB3_RX- 14 USB3_RX-
6 USB3_RX+ 15 USB3_ RX+
7 GND 16 GND
8 USB3_TX- 17 USB3_TX-
9 USB3_TX+ 18 USB3_TX+
2.5GbE RJ-45 Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
20 LAN1_MDI0P 24 LAN1_MDI2P
21 LAN1_MDI0N 25 LAN1_MDI2N
22 LAN1_MDI1P 26 LAN1_MDI3P
23 LAN1_MDI1N 27 LAN1_MDI3N

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K/M_USB1
External USB 2.0 Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 GND 5 GND
2 USB_DATA+ 6 USB_DATA+
3 USB_DATA- 7 USB_DATA-
4 VCC 8 VCC
External Keyboard/Mouse Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
9 GND 12 VCC
10 KEYBOARD DATA 13 KEYBOARD CLOCK
11 MOUSE DATA 14 MOUSE CLOCK
HDMI1: External HDMI Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
21 HDMI_DATA2 31 GND
22 GND 32 HDMI_CLK#
23 HDMI_DATA2# 33 N/C
24 HDMI_DATA1 34 N/C
25 GND 35 HDMI_SCL
26 HDMI_DATA1# 36 HDMI_SDA
27 HDMI_DATA0 37 GND
28 GND 38 +5V
29 HDMI_DATA0# 39 HDMI_HPD
30 HDMI_CLK

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COM1/VGA1
External RS-232 Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 DCD1 6 DSR1
2 RXD1 7 RTS1
3 TXD1 8 CTS1
4 DTR1 9 RI1
5 GND1
External VGA Connector
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
V1 RED V2 GREEN
V3 BLUE V4 NC
V5 GND V6 Hot plug detect
V7 GND V8 GND
V9 VCC V10 GND
V11 NC V12 DDCDA
V13 HSYNC V14 VSYNC
V15 DDCCLK
USB1: External USB 3.2 Gen 1 Connectors
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 VCC 10 VCC
2 USB_DATA- 11 USB_DATA-
3 USB_DATA+ 12 USB_ DATA+
4 GND 13 GND
5 USB3_RX- 14 USB3_RX-
6 USB3_RX+ 15 USB3_ RX+
7 GND 16 GND
8 USB3_TX- 17 USB3_TX-
9 USB3_TX+ 18 USB3_TX+

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Board Layout: Jumper and Connector Locations
(Unit: mm)