
Datasheet FUJITSU Mainboard D3644-B µATX
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Data Sheet
FUJITSU Mainboard D3644-B µATX
Extended Lifecycle Series
Powered by the Intel® C246 Express Chipset supporting DDR4-2666 SDRAM Memory
and Intel® XEON® / Intel® 8th generation CoreTM i7 / i5 / i3 Processors.
Designed and approved for 24/7 continuous operation @ 50°C
Chipset:
Intel® C246 Express Chipset
Processors:
Intel® XEON® E-21xx processor series
Intel® Core™ i7 / i5 / i3 (8th gen.) processor series
Intel® Pentium® / Intel® Celeron® processor series
Socket LGA1151 – up to 95W TDP
Memory:
DDR4-2666, Dual Channel
4 DIMM sockets, up to 64GB memory
ECC support
Product Features:
Supporting Intel AMT 12.0 / vPro
PCI Express x16 (Gen.3)
Intel® GbE LAN
Intel® UHD Graphics (DX12)
1x DVI-D, 2x DP V1.2
Intel® High Definition 5.1 Audio; Infineon TPM V2.0
1 x COM port
4x USB 2.0, 6x USB 3.1 Gen1, 2x USB 3.1 Gen2, 1 x USB 3.1 Gen2 stick socket
6x SATA 6G/s incl. RAID support
M.2 2280 (PCIe-based SSD modules)
M.2 2230 (WLAN/Bluetooth modules)
BIOS-POST/-Boot & OS – HW Watchdog onboard

Data Sheet
FUJITSU Mainboard D3644-B µATX
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µATX: 9.6” x 9.6” (243.8 x 243.8 mm)
Intel® C246 Express Chipset
4 DIMM Sockets DDR4-2666 (1.2V), max. 64GB, Dual Channel
DDR4 -2666 (CL19) / -2400 (CL17) / -2133 (CL15) SDRAM, unbuffered, ECC1 / non-ECC
Effective memory speed depends on installed processor
Intel® XEON® E-21xx processor series
Intel® Core™ i7 / i5 / i3 (8th generation) processor series
Intel® Pentium® / Intel® Celeron® processor series
Socket LGA1151, max. 95W TDP
(For details on supported processors please refer to OEM FTP Server)
ATX- 24 Pin or ATX- 20 Pin + 4 Pin (12V) Power Connector required
Support for Soft-Off Power Supplies
12V and 3.3V Supply Voltage on PCIe Slots
3.3V Auxiliary Supply Voltage on PCIe Slots (Wake-Up Function)
On board high-efficiency CPU Voltage Regulator, 5V / 2.5A Auxiliary Power
required for USB Wake-Up from Save-to-RAM, Save-to-Disk
Power Supply Requirements
for mainboard only - worst case incl. processor & memory;
w/o USB devices; w/o PCIe cards; w/o SATA drives; w/o M.2 devices
.1) Processor 95W TDP: Max. Cont. Current = 10A; max. Surge Current = 16A (< 100sec) / 18A (< 10ms)
Processor 65W TDP: Max. Cont. Current = 7A; max. Surge Current = 14A (< 100sec) / 18A (< 10ms)
Processor 35W TDP: Max. Cont. Current = 4A; max. Surge Current = 10A (< 100sec) / 14A (< 10ms)
Mainboard
Capacitive
Load
AMI Aptio 5.x (UEFI) BIOS
modified and adapted by Fujitsu Technology Solutions; Recovery BIOS, SM-BIOS (DMI), BIOS and
CPU Microcode Update, Quick Boot, Logo Boot, Quiet Boot, Plug & Play, Automatic DRAM and
PCIe Configuration, BIOS Support for S.M.A.R.T., Advanced Power Management, ACPI S3/S4,
Wake on time from S5.
HW Watchdog support & BIOS integrated HW Diagnostic Tool.
No legacy OS support, no MBR installation (UEFI only due to Intel restrictions)
Recovery BIOS, System and BIOS Password, Boot Sequence Control, Serial-/ Parallel-/ USB- Port
Access, Boot Sector Virus Warning, Write Protection for Flash BIOS, Erase Disk2 (BIOS Feature);
TPM V2.0 (Infineon; TCG compliant).
1 ECC support for XEON processors only

Data Sheet
FUJITSU Mainboard D3644-B µATX
ts.fujitsu.com/mainboards.
Silent Fan Independent temperature related processor fan
and system fan supervision and control
System Guard View Silent Fan features
Recovery BIOS Restores a corrupted BIOS
Desk Update Simple driver update with Driver & Utilities DVD
Multi Boot Comfortable boot from any boot device
HDD Password Access protection for disk drives / M.2 SSD modules
CSA / UL compliance cTÜVus acc. IEC62368-1
FCC compliance FCC-B verified (planned)
OS “Runnable” “Tested/Released by Fujitsu”
MS Windows 10 RS3 X X
MS Windows 10 RS4 X X
Linux-64 X tbd
Important Note:
Legacy OS / MBR installation (DOS, MS Windows 7, …) is not supported due to Intel restrictions
Intel® UHD Graphics (depends on installed processor), DX12
2 x DisplayPort V1.2
1 x DVI-D
VGA output possible via optional VGA extension module D3653
Realtek ALC671, 5.1- channel, High Definition Audio Codec
TPM TPM V2.0 (Infineon SLB9670; TCG compliant)
LAN Intel i219LM 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
6 x Serial ATA III 600 Interface (up to 6GBit/s), NCQ, AHCI, RAID 0/1/5/10
M.2 2280 Key-M for PCIe-based SSD NVME modules; 4 x PCIe Gen3 lanes
M.2 2230 Key-E for PCIe/USB-based WLAN/Bluetooth modules; 1 x PCIe Gen3, 1 x USB2.0
1 x external RS-232 port
1 x PS/2 (mouse)
1 x PS/2 (keyboard)
Longlife components for 24 / 7 continuous operation @ 50°C
Revision control & Extended Lifecycle (up to 3 years)

Data Sheet
FUJITSU Mainboard D3644-B µATX
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VGA3 / DVI-I / DVI-D / DP V1.2 / 2nd DP V1.2 / LVDS
Stereo Audio / 5.1 Multichannel Audio/ Front Panel Audio
Buzzer / internal Speaker Support (mono)
LAN Gbit / 100 Mbit / 10 Mbit / WoL / LAN Boot / Teaming
AMT 12.0 vPro / Intel Standard Manageability / DASH V1.1
SATA / SATA-RAID / eSATA-Support / mSATA / M.2 SSD (PCIe)
USB 2.0 / USB 3.1 (gen1) / USB 3.1 (gen2)
FAN monitored & controlled PSU4 / CPU / AUX1 / AUX2 / Aux3
TEMP monitored CPU / onboard sensors / external sensor
Silent Fan / System Guard
Recovery BIOS / Desk Update / Multi Boot
HDD Password / EraseDisk5 / TPM V2.0
BIOS POST Watchdog / BIOS Boot Watchdog / OS HW Watchdog
Logo Boot Option / Intel On Screen Branding
High Efficiency Core Voltage Regulator Design
Operating Mode 24-7 / 8-5 (hrs per day - days per week)
Mainboard operating temperature range (chassis inside)6
PCI Express x16 (16 Lanes, Gen3) / PCI Express x16 (4 Lanes, Gen3)
PCI Express x1 (Gen3, “open slot”) / PCI Express x1 (Gen3, “closed slot”)
PCI Slots (32Bit, 33 MHz, Rev. 2.3) / Mini-PCIe
SATA-600 / mSATA / M.2 SSD 2280 (Key-M, PCIe/NVME)
M.2 2230 (Key-E, PCIe & USB2.0 for WLAN/Bluetooth)
S/PDIF (digital Audio) OUT / IN
Front Panel Audio (9-Pin, HD Audio)
USB 2.0 / USB 3.1 (Gen1) / USB 3.1 (Gen2) / USB 3.1 (Gen2) Stick 7
FAN PSU / CPU / AUX1 / AUX2 / Aux3
Intrusion (Case Open) / GPIO(8Bit) / SM-Bus (Case Temp.)
Serial (COM, RS-232) / Parallel Port Pin Header
Front Panel (Power Switch, Reset Switch, LEDs, Intel 10 pin compatible)
ATX Power Supply (24 pin + 4 pin) / 12V-only Power Supply
VGA Sub D2 / DVI-I / DVI-D / DisplayPort V1.2
Audio Mic. In / Line in / Line out (or driver configuration)
USB 2.0 / USB 3.1 (Gen1) / USB 3.1 (Gen2)
3 VGA possible via optional converter board D3653 or DP-VGA-converter (dongle)
Not supported by standard Power Supplies
6 Forced cooling required, see technical documentation for details
7 Each internal USB connector (pin header) provides two USB ports (except for USB stick socket)

Data Sheet
FUJITSU Mainboard D3644-B µATX
ts.fujitsu.com/mainboards.
Mouse 2 x USB 2.0 COM LAN
Kbd 2 x DP V1.2 DVI-D 2x USB 3.1 2x USB 3.1 Audio
Gen2 Gen1
Connector / Socket Diagramm

Data Sheet
FUJITSU Mainboard D3644-B µATX
ts.fujitsu.com/mainboards.
Fujitsu VGA Converter Board D3653
M.2 Carrier Board D3352-A1
Displayport to DVI Converter Cable
(400mm)
Further industrial products offered by Fujitsu
• Connectors
• KVM Switches
• Relays
• Touch Panels
• Thermal Printers
• Wireless Modules 24 Volt Kiosk Printers Multi-Input Touch Panels
Contact:
Fujitsu Components Europe, B.V.
Tel.: +31 (0)23 556 0910
Fax: +31 (0)23 556 0950
Website: emea.fujitsu.com/components
Address: Diamantlaan 25
2132 WV Hoofddorp
Netherlands

Data Sheet
FUJITSU Mainboard D3644-B µATX
ts.fujitsu.com/mainboards.
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Fujitsu and the Fujitsu logo are trademarks
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Intel Chipset C236, Xeon C3 and Intel Core i7
/ i5 / i3 are trademarks or registered trademarks of Intel Corporation in America and
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Contact
Fujitsu Technology Solutions GmbH
OEM Mainboard Sales
Email: oem-sales@ts.fujitsu.com
Website: http://ts.fujitsu.com
2018-08-23
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may be trademarks and/or copyrights of the respective manufacturer, the use of which by third parties for their
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