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K3931-N mITX

Product Highlights

K3931-N mITX Industrial Series

* Intel® Core™ i3/Processor series (Alder Lake N)

* cTDP – Easy & flexible reduction of CPU TDP down to 6 W

* DDR5-4800 SODIMM, max 32 GByte

* Intel® UHD Gen12 Graphics (within SoC)

* Up to 3x DisplayPort V1.4a

* Dual Channel LVDS (24 bit) and eDP V1.4b

* PCI Express® x1 (Gen3, mechanical x4)

* 8 Bit GPIO & HD Audio onboard

* 3x USB 2.0, 4x USB 3.2 Gen1, 4x USB 3.2 Gen2

* Internal USB 3.2 Gen2 Key-A for USB-C extension cable

* Internal USB2 Stick socket

* 1x Realtek GbE LAN, 1x 2.5GbE incl. Teaming

* 1x SATA 6G

* 1x M.2 2230/2242/2280

(Key-M ,PCIe x2 Gen3/NVMe SSD modules)

* 1x M.2 2242/2280 (Key-B, PCIe x1 Gen3/SATA SSD modules)

* 1x M.2 2230 (Key-E, WLAN/Bluetooth modules,

CNVi support only)

* Intel® integrated iTPM V2.0

* 4x RS-232 support onboard (1x incl. RS485/422) + 1x ccTalk

* HW Watchdog onboard

* WideRange internal/external DC input (8 V – 34 V)

The Industrial Motherboard K3931-N mITX supports the

Intel® Core™ i3 and Intel® Processor series (Alder Lake N) with

latest UHD Gen12 graphics based on Intel® Xe architecture. It is

equipped with three DisplayPorts, one embedded DisplayPort

and one Dual-Channel LVDS (24bit) and supports three indepen-

dent displays with up to 3x 4K resolution. It is also equipped with

extension slots for PCIe and two M.2 connectors, and offers

many other functions like GPIO, four COM ports, one ccTalk port

and USB 3.2 Gen2. Designed and approved for 24/7 continuous

operation and an enhanced temperature range up to 60 °C the

K3931-N mITX fits perfectly with special requirements of certain

markets.

DPP3

(shared /w LVDS)

DC-In

lockable

DPP1

2x USB 3.2

Gen2

2x USB 3.2

Gen1

COM1

(RS232)

Audio

(LineIn, LineOut)

DPP2

LAN2

(Intel 2.5G)

LAN1

(Realtek 1G)

COM2

(RS232/RS422/485)

Technical Information

SYSTEM

PROCESSOR

MEMORY

Intel® Alder Lake N SoC series

N1: Intel® Processor N50 (2C/6W) SoC

N2: Intel® Processor N97 (4C/12W) SoC

N4: Intel® Processor N200 (4C/6W) SoC

N6: Intel® Core™ i3 N305 (8C/15W) SoC

DDR5 4800 SDRAM

1x SO DIMM socket, up to 32 GByte memory, non-ECC

VIDEO

GRAPHICS

Intel® UHD Graphics driven by Intel® Xe with up to 32 execution units (EUs)

Up to 3x DPP V1.4a (up to 4K resolution1)

1x Embedded DP (eDP V1.4b up to 4K resolution2)

1x Dual-Channel 24bit LVDS

Following max. display combinations are supported:

3x DPP / 2x DPP + LVDS or eDP / 1x DPP + eDP + LVDS

AUDIO

AUDIO CODEC

AUDIO INTERFACE

Realtek ALC256

Stereo3, High Definition Audio Codec

NETWORK CONNECTION

ETHERNET 1

ETHERNET 2

Realtek RTL8111H with 10/100/1000 MBit/s,

Wake-on-LAN (WoL) by interesting Packets, Link Status Change and

Magic Packet™, PXE Support, BIOS MAC Address Display, Teaming Support

Intel® i226LM with 10/100/1000/2500 MBit/s, TSN Support, Wake-on-LAN

(WoL) by interesting Packets, Link Status Change and Magic Packet™, PXE

Support, BIOS MAC Address Display, Teaming Support

PERIPHERAL CONNECTION

USB

SERIAL PORT

OTHER I/Os

3x USB 2.0 (by header), 1x USB 2.0 stick socket

2x USB 3.2 Gen1 (Rear), 2x USB 3.2 Gen1 (by header)

2x USB 3.2 Gen2 (Rear), 1x USB 3.2 Gen2 Key A (header) for USB3 Type-C option

1x RS232/422/485; 3x RS232, 1x ccTalk (2x RearIO, 3x by header)

8 Bit GPIO (by header); WLAN LED support, WLAN enable/disable support

3.3 V/5 V/12 V supply voltage output; SMBus controller PCA9554A

1) 3x 4K support only with K39xx-N2 (N97). All other boards: 2x 4K + 1x FHD

2) 4K Resolution on eDP only with K39xx-N2 (N97)

K3931-N Mini-ITX (2023-03-02)

Footer

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Overview

DC-In

lockable

DPP1

DPP2

DPP3 (shared /w LVDS)

2x USB 3.2

Gen1

2x USB 3.2

Gen2

COM1 (RS232)

COM2

(RS232/RS422/485)

LAN2

(Intel 2.5G)

LAN1

(Realtek 1G)

Audio

(LineIn, LineOut)

Optional: USB-C

3.2 Gen2

M.2 Key-M 2230/2242/2280

PCIe x2@G3, SSD NVMe

M.2 Key-B 2242/2280

PCIe x1@G3, SSD SATA

M.2 Key-E

2230

WiFi CNVi,

BT USB

DC-In 8-34V

External / Internal

1x SODIMM

DDR5

4800 MHz

Intel Alderlake-N

SoC 6-15W

FAN1

Config Jumper

SATA

1x USB2.0

LVDS Backlight

24bit LVDS

Panel Voltage

EDP

LVDS

Intrusion

Speaker

PCIe x1@G3 (open x4 slot)

Buzzer

CR2032

RTC Battery

USB3.2 Gen2

Type-A

USB3.2 Gen1

Header

Preliminary Layout

K3931 Rev.A

6-layer PCB

170 mm

170 mm