X86 Hardware issues (Graphics, WiFi, Onboard Sound, external DACs, Disks, BIOS/UEFI Boot problems etc.)

I am writing to understand why Volumio OS latest version does not recognize the Mini PC’s internal wifi card. The wifi card is a Realtek 8821CE Wireless LAN802.11ac PCI-E NIC. I tried two external dongles and Volumio sees them and I can connect with wifi, but when I remove the dongle, Volumio doesn’t see the internal wifi card. Even if I try to restart and select the wifi network it doesn’t see the internal wifi card. Compatibility issue with Realtek chip 8821CE? Someone have the same problem? Thanks