[20K1]SBXF_PCDRV_L11_2_30_0012.exe
https://www.reddit.com/r/SoundBlasterOfficial/comments/bs4lh2/xfi_20k1_drivers_for_windows_1903_beta/
https://creative.app.box.com/s/fxzp6tmp6nzxrzao7faknmt7b0oc6a4t

Sound Blaster X-Fi 20K1用βドライバ
Windows 10 Version 1903で機能しない修正