K3921-N mSTX New

Industrial Motherboard supporting the Intel® Core™ i3 processors & Intel® processors N series
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  • Latest DDR5 memory technology for best-in-class system performance
  • Intel® UHD Gen12 Graphics - driven by Intel® Xe architecture (within SoC)
  • Up to 2x DisplayPort 1.4 and 1x DisplayPort via USB Type-C
  • Dual Channel LVDS (24 Bit) and eDP V1.4b (4 K) onboard
  • Designed for fanless operation
Download Datasheet

The Industrial Motherboard K3921-N mSTX is based on the latest Intel® Core™ i3 and Intel® Processors series (Alder Lake N) with powerful UHD Gen12 graphics using Intel® Xe architecture. There are two DisplayPorts 1.4, one DisplayPort via front USB-Type-C plus onboard connectors for Embedded DisplayPort and Dual-Channel 24bit LVDS panels. Three independent displays with up to 4K display resolution (2x 4K + 1x FHD) are supported. The K3921-N is equipped with two M.2 (Storage and Wifi) connectors and in addition to this offers many other connectivity options like GPIO, two COM ports and USB 3.2 Gen2. Designed and approved for 24/7 continuous operation and an enhanced temperature range up to 60 °C the K3921-N is applicable in many vertical markets.


Benefits of Kontron motherboards:

  • Highest quality through German engineering and production
  • Strict lifecycle management and reliable product maintenance
  • Comprehensive feature and tool set
  • Excellent technical support
  • Beneficial total-cost-of-ownership


Processor Intel® Core® i3 Processors & Intel® Processors N-series
Chipset 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
Main Memory 1x DDR5-4800 SODIMM Sockets up to 32 GByte, non-ECC
Graphics Controller Intel UHD Graphics driven by Intel® Xe with up to 32 execution units (EUs)
Display 1x Embedded DP (eDP V1.4b up to 4K resolution2)
1x Dual-Channel 24bit LVDS

Following max. display combinations are supported (Simultaneous use of LVDS and eDP is not supported):
2x DPP + 1x DPoC / 2x DPP + LVDS or eDP / 1x DPP + 1x DPoC + eDP or LVDS
Audio Controller Realtek ALC256
Audio Stereo3, High Definition Audio Codec
Ethernet Realtek RTL8111H with 10/100/1000 MBit/s, Teaming support
Realtek RTL8125BG-CG with 10/100/1000/2500 MBit/s, TSN Support
USB 3x USB 2.0 (by headers)
2x USB 3.2 Gen1 (Rear), 1x USB 3.2 Gen1 (Front), 1x USB 3.2 Gen1 Type-C (Front)
2x USB 3.2 Gen2 (Rear)
Serial 1x RS232/422/485; 1x RS232
Available I/Os 8 Bit GPIO (by header); WLAN LED support, WLAN enable/disable support
SATA 1x Serial ATA III 600 Interface (up to 6GBit/s), NCQ, AHCI
Expansion 1x M.2 PCIe 2230/2242/2280 (Key-M, PCIe x2 Gen3/NVMe SSD modules)
1x M.2 PCIe 2230 (Key-E, WLAN PCIe and CNVi support/Bluetooth USB modules)
Power connector External/Internal DC-In (DC Jack/4-Pin Micro-Fit)
Input Voltage DC Input 12V or 19-28V, max. 5A/65W (external DC-In),
max. 10A/100W (internal DC-In)
Watchdog BIOS POST-/BIOS BOOT-/OS-HW Watchdog
Real Time Clock integrated
Cooling 1x PWM fan (CPU/System)
Operating System MS Windows 10, MS Windows 11, MS Windows 10 IoT, Linux-64
No legacy OS support, no MBR installation (UEFI only)
Mechanical Dimensions Mini-STX: 5.5“ x 5.8“ (140 x 148 mm)
Operating Temperature 0°C-60°C
Humidity 5%-85%
Certifications Planned: cTÜVus acc. IEC62368-1, CE Class B incl. Industrial Immunity, UKCA, FCC-B verified



Datasheet K3921-N mSTX
[ k3921-n_mstx.pdf, 764.27 KB, Feb.21.2024 ]


General Safety Instruction
[ general-safety-instructions.pdf, 560.72 KB, Jan.04.2021 ]

Tech Spec Sheet

Motherboard and SMARTCASE™ Tech Specs
[ productoverview_motherboards.pdf, 6.05 MB, Apr.15.2024 ]


Kontron Services Brochure
[ kontron-services-brochure.pdf, 8.9 MB, Dec.17.2020 ]


SMARTCASE™ S501 Chassis Kit Solution for K3921-N & K3921-H mSTX more
AC Adapter
AC Adapter 19V / 3.42A, 65W - w/o power cord  
COM Cable short w/o bracket
COM Cable short w/o bracket w/o slot bracket, length = 120mm; new 2mm pitch internal connector  
WLAN Kit for SMARTCASE™  S511 left (grey)/right (black) Antenna (incl. cable) to be fitted into mSTX chassis  
Wall Mount Bracket for SMARTCASE™ S511
Wall Mount Bracket for SMARTCASE™ S511 2x Bracket per chassis incl. screws  
VESA mount SMARTCASE™ S5xx "E-Line bracket"  
DC-In Holder for SMARTCASE™ S511
DC-In Holder for SMARTCASE™ S511 Holder incl. screws  
DP 20P M to HDMI Adapter
DP 20P M to HDMI Adapter DP 20P M to HDMI Adapter, up to 4k @ 60 Hz  
Slim Active Heatsink mSTX/mITX ADL-N 15W
Slim Active Heatsink mSTX/mITX ADL-N 15W Slim Active Heatsink mSTX/mITX ADL-N 15W  
Slim passive cooler mSTX ADL-N 10W
Slim passive cooler mSTX ADL-N 10W Slim passive cooler mSTX ADL-N 10W  
M.2 Dual SATA Module
M.2 Dual SATA Module M.2 Dual SATA Module  


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