Logitech Profiler for Windows - Download it from Uptodown for free
Shifter Adapter for Logitech G25, G27, G29, G920: Amazon.co.uk: PC & Video Games
Shifter Adapter for Logitech G25, G27, G29, G920 : Leo Bodnar Electronics
Amazon.com: meakeize USB Sequential Shifter for PC Windows Win10 Win7 xp compatible for Logitech G27 G29 G923 G920 PXN TMX Racing Wheel fit for Horizon WRC Dirt LFS Corsa Assetto ETS Forza
Steam Community :: Guide :: How to perform a good clean G27, G25 install