Awesome

EFI Open core 6.4 Dell inspirion 3670

CPU: Intel core i5 9400
Audio: Realtek ALC891
Network: Realtek PCIe GbE Family controller
Wifi: Qualcomm QCA9565 802.11b

Fix done on Mac Big sur 11.1

 + UHD Graphic 630
 + Audio
 + Clan network

Not working

+ Wifi
+ Sleep
+ D-sub port display