Spheros Thermo Test Mode D'emploi page 62

USB driver installation
f) If the the correct driver was found, start the installation by clicking
the NEXT button.
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g) Once the installation is completed and the Hardware Wizard is
closed by clicking the FINISH button, the USB device is ready to
work.
Consider, if using several diagnostic adapters, for each its own USB
driver must be installed separately.
You can also use several diagnostic adapters simultaneously.
For that, either you run multiple instances of the PC software, or select
the respective diagnostic adapter manually in your PC application.
SPHEROS Thermo Test