Fujitsu Futro S540 - Thin Client
Table of Contents
Overview
S540 together with the S740 are the successors of the previous S520 and S720 models.
With the new line it seems that also the platform changed: the new devices are not anymore based on AMD processors and use instead the Intel Celeron line. The S540 sports a Dual Core J4005.
The case got also a little more slicker and smaller than the previous model.
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Hardware
Specifications:
| Processor | |
| Type | Intel Celeron-Processor J4005 (Dual Core, 2.0 GHz, up to 2.7 GHz) |
| Memory | |
| Flash | 32/64/128 SSD SATA M.2 |
| RAM | 2-8GB on one Slot SO DIMM DDR4 |
| Video | |
| Chip | Intel UHD Graphics 600 |
| Resolution | 4k @ 60Hz |
| Ports | |
| Video | 2x DisplayPort |
| USB | 2x USB 3.0 Type A in front 1x USB 3.1 Gen1 on the back (optional, see Expansion) 4x USB 2.0 on the back |
| Serial | - |
| Parallel | - |
| PS2 | - |
| Audio | 1x headphone + 1x mic in front; 1x audio output (line out) on the back |
| Connectivity | |
| LAN | Realtek Semiconductor Gigabit Ethernet |
| Power | |
| Power | 19V-20V 2A |
| Plug | Coax 5.5mm/2.5mm |
| Off | 0.19 W (WoL disabled) |
| Sleep | 1.25 W (WoL enabled) |
| Long Idle | 5.01 W |
| Dimensions | |
| WxDxH (mm) | 36x165x147 |
| (with stand) | 76x175x158 |
Disassembly:
The Stand
The stand is fixed with some plastic inserts and can be adapted to vertical or horizontal usage.
Case can be very easy be open as only 2 small Philips screws are to be unscrewed.
Power Supply
Seems to be a standard Fujitsu Power Supply adapter similar to the one used by S520
CPU
The S540 is fitted with an Intel Celeron J4005 dualcore running at 2.0GHz with a boost up to 2.7GHz
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 39 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 2
On-line CPU(s) list: 0,1
Vendor ID: GenuineIntel
BIOS Vendor ID: Intel
Model name: Intel(R) Celeron(R) J4005 CPU @ 2.00GHz
BIOS Model name: Intel(R) Celeron(R) J4005 CPU @ 2.00GHz CPU @ 2.0GHz
BIOS CPU family: 15
CPU family: 6
Model: 122
Thread(s) per core: 1
Core(s) per socket: 2
Socket(s): 1
Stepping: 1
CPU(s) scaling MHz: 93%
CPU max MHz: 2700.0000
CPU min MHz: 800.0000
BogoMIPS: 3993.60
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 sgx 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
Virtualization: VT-x
L1d cache: 48 KiB (2 instances)
L1i cache: 64 KiB (2 instances)
L2 cache: 4 MiB (1 instance)The Linux lspci reports:
00:00.0 Host bridge: Intel Corporation Gemini Lake Host Bridge (rev 03)
00:00.1 Signal processing controller: Intel Corporation Celeron/Pentium Silver Processor Dynamic Platform and Thermal Framework Processor Participant (rev 03)
00:00.3 System peripheral: Intel Corporation Celeron/Pentium Silver Processor Gaussian Mixture Model (rev 03)
00:02.0 VGA compatible controller: Intel Corporation GeminiLake [UHD Graphics 600] (rev 03)
00:0e.0 Audio device: Intel Corporation Celeron/Pentium Silver Processor High Definition Audio (rev 03)
00:0f.0 Communication controller: Intel Corporation Celeron/Pentium Silver Processor Trusted Execution Engine Interface (rev 03)
00:12.0 SATA controller: Intel Corporation Celeron/Pentium Silver Processor SATA Controller (rev 03)
00:13.0 PCI bridge: Intel Corporation Gemini Lake PCI Express Root Port (rev f3)
00:13.2 PCI bridge: Intel Corporation Gemini Lake PCI Express Root Port (rev f3)
00:13.3 PCI bridge: Intel Corporation Gemini Lake PCI Express Root Port (rev f3)
00:14.0 PCI bridge: Intel Corporation Gemini Lake PCI Express Root Port (rev f3)
00:14.1 PCI bridge: Intel Corporation Gemini Lake PCI Express Root Port (rev f3)
00:15.0 USB controller: Intel Corporation Celeron/Pentium Silver Processor USB 3.0 xHCI Controller (rev 03)
00:16.0 Signal processing controller: Intel Corporation Celeron/Pentium Silver Processor I2C 0 (rev 03)
00:16.1 Signal processing controller: Intel Corporation Celeron/Pentium Silver Processor I2C 1 (rev 03)
00:16.2 Signal processing controller: Intel Corporation Celeron/Pentium Silver Processor I2C 2 (rev 03)
00:16.3 Signal processing controller: Intel Corporation Celeron/Pentium Silver Processor I2C 3 (rev 03)
00:17.0 Signal processing controller: Intel Corporation Celeron/Pentium Silver Processor I2C 4 (rev 03)
00:17.1 Signal processing controller: Intel Corporation Celeron/Pentium Silver Processor I2C 5 (rev 03)
00:17.2 Signal processing controller: Intel Corporation Celeron/Pentium Silver Processor I2C 6 (rev 03)
00:17.3 Signal processing controller: Intel Corporation Celeron/Pentium Silver Processor I2C 7 (rev 03)
00:19.0 Signal processing controller: Intel Corporation Celeron/Pentium Silver Processor Serial IO SPI Host Controller (rev 03)
00:19.1 Signal processing controller: Intel Corporation Celeron/Pentium Silver Processor Serial IO SPI Host Controller (rev 03)
00:19.2 Signal processing controller: Intel Corporation Celeron/Pentium Silver Processor Serial IO SPI Host Controller (rev 03)
00:1f.0 ISA bridge: Intel Corporation Celeron/Pentium Silver Processor LPC Controller (rev 03)
00:1f.1 SMBus: Intel Corporation Celeron/Pentium Silver Processor Gaussian Mixture Model (rev 03)
01:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)Expansion:
Flash: a M.2 SATA SSD can be installed in all sizes. Reports on the internet are that also NVMe modules are accepted but they will work only at SATA speed. Attention also on the M.2 Key as the "M" key are a no go. I have installed a Transcend 240GB TS240GMTS420S card which worked without problems. The build allows different sizes of M2 drives: 2230, 2242 or 2280. For the 2242 it seems that is necessary to move the nut that holds the drive into place and for the 2280 it will go back to back with the PICe WLAN card.
RAM: 1 Slot is available for RAM DDR4 and accepts according to specs up to 8GB. I did not had a bigger module to test it out.
PCIe: 1 Slot available that accepts M.2 network cards. I have installed an Intel 8265NGW M2 PCIe WLAN card which functioned without problems.
USB: below the Flash and the PCIe connector there is a USB 3.1 connector. My unit unfortunately did not had it by default. There is a cut on the back panel shaped like a USB-C Port which should be the output for this.
PPoE: above the Flash and PCIe connector there is a connector for a PPoE module. I also did not had it as standard so I cannot say to much about it.
Serial: the S740 has in the corner close to the power supply connection also a Serial Connector. My device had only the slot on the back mask for the serial connector, on the Mobo there is only visible the place where this should be. Below a pic with the S540 and a S740, the Serial Connector is to be seen in the upper left corner of the S740.
Firmware
BIOS
Hit F2 at power-on to get into the BIOS. This describes itself as Aptio Setup Utility and is an American Megatrends and reported 'Version 2.19.1268' and 'Core Version 5.0.0.13'. Selecting System Information took me to another screen where it gave the BIOS Revision as R1.10.0, built 05/10/2019.
Moving on to the Advanced tab which included the intriguing entry Auto BIOS Update. If you enable this option the S540 goes on-line at boot time and checks the specified server (webdownloads.ts.fujitsu.com) to see if there is an updated BIOS available. Manually checking the Fujitsu support site I could see there was V5.0.0.13 - R1.14.0 (08/01/2025) available. When I tried the automatic process it did go on-line but, after maybe 10 seconds, reported "Couldn't get firmware information from update server".
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Boot
For a one-off selection you can hit F12 at power-on to get straight into the boot screen menu without having to mess about in the BIOS.
BIOS Update
I have manually updated the BIOS as per the instructions on https://support.ts.fujitsu.com/ and right now I am on R1.14.0 (11/20/2024). Strangely on Fujitsu site this version has a different date: 08/01/2025... Update was done directly on boot with no OS required. The Fujitsu site offers also an update via Windows.
Standard Firmware
The version that I have came with a 8GB Flash Module (could be a custom configuration or a after market install as I have bought it used) and with Linux - elux RP 6.22 preinstalled.
Linux
I didn’t had any problem booting all the distros that I had on my ventoy USB drive including MX-Linux, Ubuntu, Kubuntu, Xubuntu, Linux Mint.
Nevertheless I think this is a machine that will shine with ProxMox and LXC containers or with Home Assistant.
The Celeron J4005 is also on the list of supported CPUs for Windows 11 and I also saw it boot pretty decent with Windows 10 but did not wonder further away.
Personal note(s)
(1)
This is a flea market find and I have fell in love with it at the first moment. I think the only drawback in all setup is the dual core CPU, but this does not mean that there is no niche for such a machine. Do to finding a S740 most probably the S540 will leave my collection with the hope that will find a owner where to serve a more practical scope. :-)
| Info | Detail |
| Purchase price | unknown price |
| Purchase date | ~ April 2023 |
| Upgrades | |
| SSD | unknown price |
| WLAN Card | unknown price |
| Scope | ProxMox playground machine Home Assistant |
| Sell price | N/A |
| Sell date | N/A |
(2)
In April 2024 I have contacted David Parkinson from https://www.parkytowers.me.uk (this is my "go to" resource/wiki for thin clients) and offer to supply a description for the Fujitsu Futro S540 as on his site there was none. He agreed to it and I would be glad if he will take upon the offer made back then :-)
