D3674-B-Thin mITX

Extended Lifecycle Motherboard supporting the 8th/9th Gen Intel® Core™ i Processors
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  • cTDP – Easy & flexible reduction of CPU TDP
  • Intel® HD Graphics (DX12, integrated in processor)
  • HDMI V1.4, DP V1.2 and Dual Channel LVDS support
  • 8 Bit GPIO
  • Dual-Range DC Power Supply 12V / 19-24V
Download Datasheet

The Extended Lifecycle Motherboard D3674-B Thin mITX provides highest performance and functionality for demanding requirements on a small and ultra thin form factor. It supports the Intel® Core™ i9 / i7 / i5 / i3 – (8th/9th Gen.) as well as the Intel® Pentium® / Intel® Celeron® processor series. Despite the limited space on this motherboard, the D3674-B is equipped with connectors for HDMI V1.4, Display Port V1.2, Dual Channel LVDS, LAN and 9x USB (2.0 and 3.1 Gen1).


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® 8th & 9th Gen. Core™ i9 / i7 / i5 / i3 Processor Series
Intel® Pentium® / Intel Celeron® processor series
Chipset Intel® H310 Express Chipset
Main Memory 2x DDR4 2666/2400 SO DIMM up to 32GByte
Graphics Controller Intel® UHD Graphics (depends on installed processor), DX12
Display 1x HDMI V1.4
1x DP V1.2
Audio Controller Realtek ALC255
Audio 5.1-channel, High Definition Audio Codec, 2W@4Ohm stereo
speaker support
Ethernet Realtek RTL8111E with 10/100/1000 MBit/s
USB 2x USB 2.0 + 2x USB 2.0 (by header)
2x USB 3.1 Gen1 + 2x USB 3.1 Gen1 (by header)
Serial 1x RS232
Available I/Os 1x 8Bit GPIO (by header)
SATA 2x Serial ATA III 600 Interface (up to 6GBit/s), NCQ, AHCI
Expansion 1x M.2 Key M Socket (2280) for PCIe based M.2 Modules (4 lanes)
1x M.2 Key-E (2230)
Power connector External / Internal DC-In
Input Voltage External DC-in: 19-24 V
Internal DC-in: 12 V or 19-24 V
Watchdog 3 Level HW Watchdog (BIOS POST / BIOS BOOT / OS)
Real Time Clock integrated; CMOS Battery buffered
Cooling 2x PWM-Fan (CPU/System)
Operating System "Windows 10
Mechanical Dimensions Thin mITX: 6.7“ x 6.7“ (170 x 170 mm)
Operation Temperature 10 °C - 50 °C
Humidity 5%-85%
Certifications CE Class B, FCC-B varified, Safety Testreport acc. EN 62368-1


Driver Updates

BIOS Updates


Datasheet D3674-B Thin mITX
[ d3674-b-thin-mitx_20191120_datasheet.pdf, 874.14 KB, Jun.01.2021 ]


Kontron FTP Server

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 ]


Active Cooler LGA1151
Active Cooler LGA1151 Low-rise active cooler suitable for D363x-S and related SMARTCASE™ S720 chassis  
COM Cable short w/o bracket
COM Cable short w/o bracket w/o slot bracket, length = 120mm; new 2mm pitch internal connector  
COM Cable "long"
COM Cable \ with fullsize slot bracket  
TPM Upgrade Module
TPM Upgrade Module TPM V2.0 (for CoffeeLake; SPI Interface)  
DP 20P M to HDMI Adapter
DP 20P M to HDMI Adapter DP 20P M to HDMI Adapter, up to 4k @ 60 Hz  


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