Fujitsu Futro S940: Hardware 

Fujitsu Futro S940 thin client


The Fujitsu Futro S940 is a neat unit that is based on a Fujitsu mini-ITX motherboard (D3543). The S940 was announced in November 2017 and was based on an Intel Pentium Silver J5005 (Quad Core, 1.5 GHz, up to 2.8 GHz, Intel UHD Graphics 605).

A UK Fujitsu press release of the time includes:

Also new to the FUTRO line-up are the ultra-compact FUTRO S540 and S740 models, with a housing of just 0.87 litres, and the FUTRO S940, the first Fujitsu FUTRO Thin Client to include a built-in power supply as well as Power over Ethernet (PoE) option, both of which help contribute to a clutter-free desk. The highly versatile FUTRO S940 comes additionally with USB Type-C, providing high-speed USB connection and optionally a graphics card allowing multi-monitoring setups that help enhance productivity.

I would note that my example of the S940 does NOT have a built in power supply. Also whilst the rear panel does have a cutout for a USB Type-C connector none is actually fitted. (It is an option).

My thanks to Adrian from Germany who, having got hold of some S940s at a very good price, sent me one.


The basic specs for the S940 are:

Pentium Silver J5005
4GB (max 16GB)
   Max resolution  
Intel UHD Graphics 605
4096 x 2160 @ 60Hz
2 x Display Port

4 x USB2.0 (rear)
2 x USB3.1 (front)
1 x Type C (rear) optional
Kybd & mouse
19V 2.0A or 3.25A (Label)
5.5mm/2.5mm coax
H x W x D (mm)
(Without stand)
250 x 52 x 195

Going to the Fujitsu support site it looks a S940 could be running one of:

  • eLuxRP
  • Windows 10 IoT Enterprise 2016 LTSB
  • Windows 10 IoT Enterprise 2019 LTSC

Power Supply

The S940 uses an external 19V power supply. The connector is a standard 5.5mm/2.5mm coax connector.


The S940 is fitted with an Intel Pentium J5005 quad core CPU.

The Linux cpuinfo reports:

cpu family:6
model name:Intel(R) Pentium(R) Silver J5005 CPU @ 1.50GHz
flags:fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg cx16 xtpr pdcm sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave rdrand lahf_lm 3dnowprefetch cpuid_fault cat_l2 pti cdp_l2 ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust smep erms mpx rdt_a rdseed smap clflushopt intel_pt sha_ni xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts umip rdpid md_clear arch_capabilities
vmx flags:vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple shadow_vmcs ept_mode_based_exec tsc_scaling


00:00.0 Host bridge: Intel Corporation Device 31f0 (rev 03)
00:00.1 Signal processing controller: Intel Corporation Device 318c (rev 03)
00:00.3 System peripheral: Intel Corporation Device 3190 (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Device 3184 (rev 03)
00:0e.0 Audio device: Intel Corporation Device 3198 (rev 03)
00:0f.0 Communication controller: Intel Corporation Device 319a (rev 03)
00:12.0 SATA controller: Intel Corporation Device 31e3 (rev 03)
00:13.0 PCI bridge: Intel Corporation Device 31d8 (rev f3)
00:13.2 PCI bridge: Intel Corporation Device 31da (rev f3)
00:13.3 PCI bridge: Intel Corporation Device 31db (rev f3)
00:14.0 PCI bridge: Intel Corporation Device 31d6 (rev f3)
00:14.1 PCI bridge: Intel Corporation Device 31d7 (rev f3)
00:15.0 USB controller: Intel Corporation Device 31a8 (rev 03)
00:16.0 Signal processing controller: Intel Corporation Device 31ac (rev 03)
00:16.1 Signal processing controller: Intel Corporation Device 31ae (rev 03)
00:16.2 Signal processing controller: Intel Corporation Device 31b0 (rev 03)
00:16.3 Signal processing controller: Intel Corporation Device 31b2 (rev 03)
00:17.0 Signal processing controller: Intel Corporation Device 31b4 (rev 03)
00:17.1 Signal processing controller: Intel Corporation Device 31b6 (rev 03)
00:17.2 Signal processing controller: Intel Corporation Device 31b8 (rev 03)
00:17.3 Signal processing controller: Intel Corporation Device 31ba (rev 03)
00:19.0 Signal processing controller: Intel Corporation Device 31c2 (rev 03)
00:19.1 Signal processing controller: Intel Corporation Device 31c4 (rev 03)
00:19.2 Signal processing controller: Intel Corporation Device 31c6 (rev 03)
00:1f.0 ISA bridge: Intel Corporation Device 31e8 (rev 03)
00:1f.1 SMBus: Intel Corporation Device 31d4 (rev 03)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)


S940 motherboard

I found a manual for the motherboard here. There is other documentation on Fujitsu's site. Clicking on the photo (right) will bring up a larger version.

The S940 is fitted with the D3543-A1 board according to the S940 datasheet but with my example it is the D3543-A11. (It's marked on a paper label that's only visible if you remove the memory SODIMM). Anyway a table in the manual shows what is fitted or not fitted to the D3543-A, D3543-C or D3543-S motherboards.

If you are uncertain the manual will let you identify exactly what's what on the motherboard.


As this is based on a mini-ITX board there is obviously plenty of expansion opportunity starting with a reasonable amount of free space within the case where disk drives could be fitted unless you are adding a PCIe card.

(Click on the photograph to get a more detailed view of the circuit board.)

CPU: Whilst the motherboard encompasses a number of different CPUs, these are specific builds. The CPU comes in a BGA package and so is soldered to the board and not socketed.

M.2 flash memory on Fujitsu S940
Flash: The board carries an M.2 socket for a SATA based SSD. My unit was fitted with a 32GB mSATA SSD.

RAM sockets on Fujitsu S940
RAM: The board carries a stacked SODIMM socket accommodating two DDR4 SODIMMs. The manual states "Only unbuffered 1.2V memory modules may be used." There is no mention of a speed rating.My example was fitted with a single 4GB Micron module: 4GB 1Rx16 PC4-2666V, part no MTAATF51264HZ-2G6E1.

Mvarious sockets on Fujitsu S940

USB: As well as the external USB ports there is a header on the motherboard close to the CPU heatsink that provides two more USB2 ports. There is also another socket adjacent to the M.2 flash labelled USB3. I assume this is the take-off for the optional Type-C socket.

various sockets on Fujitsu S940

mPCIe: There is a mPCIe socket on the board where you could fit a wireless card.

PCIe: There is a PCI x1 socket for an interface card. No riser came with my S940


As with the S900 there is provision for adding a PoE interface board to the S940. Rather than duplicate the information here see the S900 entry.


Any comments? email me. Added November 2023