Some links I saw shared in the discords (sorry if they are already posted above as I am just copy/pasting as I go and not rereading the thread and checking everything):

https://www.amazon.com/Lenovo-ThinkC.../dp/B00FNQMZFY

https://www.amazon.com/HP-EliteDesk-.../dp/B0824T3625

https://support.hp.com/za-en/document/c03386950

https://www.amazon.com/HP-EliteDesk-.../dp/B01N3AL7TC