Fujitsu Lifebook U939X Review: A business convertible with a lot of functionalities
Fujitsu has equipped the Lifebook U939X with a magnesium case, which provides the convertible with good stability and is available in black or red color variants. The matte surface offers a good grip and a high-quality feel. In addition, the 360-degree hinge secures the display tightly in any position, which enforces the positive impression. With a weight of about one kilogram (~2.2 lb), the Windows convertible is also very light and can be used for everyday tasks without any problems.
There are several Philips screws at the bottom of the Lifebook U939X. After removing them, users will easily be able to remove the bottom of the case. Below, they get access to the WLAN and WWAN modules, and the SSD can also be replaced. However, Fujitsu has directly integrated the working memory on-board, making a later upgrade impossible.
With its numerous connections, the Lifebook U939X will fulfill many demands. Since Fujitsu has also built in two Thunderbolt 3 ports, you can also add many more connections if you use the corresponding docking stations. Business users will also find a smart card reader, a fingerprint reader, and a TPM-2.0 module.
The equipment is completed by a full SD card reader that allows cards to be completely inserted. Using our Toshiba Exceria Pro SDXC 64 GB UHS-II reference storage card, it reaches very good speeds at 154 MB/s when copying and 183.7 MB/s when reading data.
The built-in WLAN adapter supports Wi-Fi 5 (802.11 ac). In our WLAN test with the Netgear Nighthawk AX12 reference router, it achieves average speeds. However, the Lifebook U939X is unable to keep up with devices that support the current Wi-Fi 6 standard.
For video conferencing and the occasional image recordings, the Lifebook U939X offers users two cameras. There is a 2.1-MP sensor below the display, which can record images at a rather mediocre quality. In our test, we also saw some strong graininess in parts in images recorded inside rooms lit by daylight. The second camera is above the keyboard, so that it is positioned on the back in tablet mode. With its 5-MP sensor, it is able to record a recognizable image of our test chart, but details and fine structures already become blurry even at low zoom levels. The ColorChecker Passport also shows that colors are reproduced significantly brighter than they should be.