: Many Fujitsu system extension drivers are now delivered through Windows Update . Go to Settings > Update & Security > Windows Update and check for "Optional Updates" if the driver is missing from your Device Manager.
The FJU02S may be connected via I2C or SMBus, requiring a chipset driver first. Fix: Install the latest Chipset Driver and Intel Serial IO Driver from your laptop manufacturer’s website, then reinstall the fju02s driver. fju02s driver link