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Déconnecter le DA 200 et installer ce qui suit dans l'ordre :

Dell XPS 13 9350 System BIOS Version: 1.2.3 http://downloads.dell.com/FOLDER03502638M/1/XPS_9350_1.2.3.exe

Intel 100 Series Chipset Driver http://downloads.dell.com/FOLDER03490356M/1/9350_Chipset_Driver_P1X3X_WN32_10.1.1.13_A01.EXE

Intel HD Graphics Driver http://downloads.dell.com/FOLDER03488467M/1/9350_Video_Driver_YDYXX_WN32_20.19.15.4331_A03.EXE

Intel Thunderbolt Controller Driver Release Date: 24 Dec 2015 http://downloads.dell.com/FOLDER03457324M/1/9350_Chipset_Driver_2V6DD_WN32_15.3.39.250_A01.EXE

Update for the USB audio/mouse on Dell Thunderbolt Dock and Dell DocK http://downloads.dell.com/FOLDER03471411M/8/Dell_Dock_USB_TYPE-C_PATCH_2K0JJ_A00_SETUP_ZPE.exe

Intel(R) Thunderbolt(TM) 3 Firmware Update http://downloads.dell.com/FOLDER03541997M/1/Intel_TBT3_FW_UPDATE_NVM15_A02_02.11.06.exe

DA200 Dongle Billboard Driver http://downloads.dell.com/FOLDER03335003M/1/Setup.exe

redémarrer le systeme et connecter le DA 200 après le redémarrage.