Fujitsu LifeBook U939X - Specs

up to 1000GB SSD
up to 16GB
Windows 10 Pro, Windows 10 Home
309 x 215 x 17 mm (12.17" x 8.46" x 0.67")
1.00 kg (2.2 lbs)
Ports and connectivity
  • 2x USB Type-A 3.2 Gen 1 (5 Gbps)
  • 2x USB Type-C 3.2 Gen 1 (5 Gbps), Thunderbolt 3
  • HDMI
  • Card reader SD, SDHC, SDXC
  • Ethernet LAN 10, 100, 1000 Mbit/s
  • Wi-Fi 802.11a/b/g/n/ac
  • Bluetooth 5.0
  • Audio jack 3.5 mm combo
  • Fingerprint reader optional
  • Web camera Full HD ([email protected])
  • Backlit keyboard optional
  • Microphone
  • Speakers 2 Stereo Speakers
  • Optical drive
  • Security Lock slot


Display Profiles


The first and most important profile (in our opinion) is the Health-Guard – when being used with our LM Profiles application, Health-Guard eliminates the harmful Pulse-Width Modulation (PWM) and reduces the negative Blue Light which affects our eyes and body. Since it’s custom tailored for every panel, it manages to keep the colors perceptually accurate (they may seem strange at first but after a few minutes our brain will start recognizing them as accurate ones – that’s how Health-Guard differs from alternatives like f.lux).

Now the profile has a higher color temperature which makes is suitable for working through the whole day (not only at night) and simulates paper so the pressure on the eyes is greatly reduced.

Pro Tip: As the Health-Guard profile simulates paper and has as accurate as possible colors, it could be a great tool for prepress designers!

Left: No Profile | Drag the slider to see the difference | Right: Health-Guard Profile

Design and Gaming

The second profile type is Design and Gaming – it combines our previous “Web Design” and “Gaming and Movie Nights” profiles in one, so it’s aimed at designers who work with colors professionally, and for games and movies as well (or maybe you’re a designer who likes to relax with some games or movies from time to time?).

“Design and Gaming” takes display panels to their limits, making them as accurate as possible in the sRGB IEC61966-2-1 standard for Web and HDTV, at white point D65.

Left: No Profile | Drag the slider to see the difference | Right: Design & Gaming Profile

Just as our previous Gaming profile, this one also regulates the first steps out of black so you can have even faster reflexes when playing in dark virtual environments…or just see everything in the darkest scenes in movies.

Left: No Profile | Drag the slider to see the difference | Right: Design & Gaming Profile

Office Work

The third profile is Office Work and it should be used mostly by users who spend most of the time looking at pieces of text, tables or just surfing.

Office Work aims to deliver better distinctness and clarity by keeping a flat gamma curve (2.20), native color temperature and perceptually accurate colors.

Left: No Profile | Drag the slider to see the difference | Right: Office Work Profile

You’ll find more information about the profiles HERE.


CPU performance

Here you can find the price/performance difference between all the CPUs that come in the Fujitsu LifeBook U939X series.

Results are from the Cinebench 15 CPU test (the higher the score, the better)


Fujitsu LifeBook U939X in-depth review

You may have noticed, but in the past several years, Fujitsu seems to have lost its edge when it comes to laptops. This seems weird because there are actually more and more manufacturers - no matter Chinese or not, that are starting to make notebooks - some of them are even not that bad. However, when it comes to business-grade devices, the Japanese giant Fujitsu is already right up there with the big names...but how does it fare against them? In order to answer that question, today in our o[...]

Read the full review


  • Very light body
  • Covers 97% of sRGB colors (LG LP140QH2-SPA1)
  • Very high color accuracy when Gaming and Web design profile is installed (LG LP140QH2-SPA1)
  • Good battery life
  • Military Standard MIL-STD-810G compliant
  • Wide I/O selection
  • Incredibly fast IR face recognition and PalmSecure option
  • Has a secondary 5MP camera
  • LTE connectivity + 2x Thunderbolt ports


  • Its fan is working hard when transferring files or installing programs
  • Mushy keyboard

Inside Fujitsu Lifebook U939X - disassembly and upgrade options



Notify of
Inline Feedbacks
View all comments