Hardware for record and playback in 5.1 surround

Could anyone give me a General guide as to what type of hardware I would require to record and playback in 5.1 surround using Cubase 10.5 Pro please?
I currently use a Behringer uphoria 404HD with 4i/o analogue channels but I can’t devide them into the 6 channels needed in the 5.1 outputs busses within the audio connections tab.
Also will it require a new internal sound card in my pc to link the 5.1 audio interface to?
The finished work (mainly films) will be played through a Pioneer VSX923 reciever system.
Thank you in advance