So I've found the aeotec z-stick 7 plus, which looks good, and the homeseer smartstick g8 z-wave plus (the homeseer one is the newer standard, correct? Is it automatically backwards compatible with the older ones?), but I'm not 100% sure I understand how they work. I'm hoping to be able to plug them into a computer to create a z-wave hub, but if I understand correctly, it isn't just plug-and-play, where it would instantly create a z-wave network when I plug it in, correct? I'd need to set it up with some software? Which Home Assistant is supposed to work with either. I currently have home assistant set up in a container on my synology NAS, which is ideally where I'd like to host everything, but.....apparently Synology DSM 7 onwards has removed the NAS's ability to recognize certain USB functionality? Aside from just a hard drive to read? So I can't just plug the usb stick into the NAS either - I think there's some coding workaround in order to get the NAS to recognize the z-wave hub functionality of the USB stick.
And then there's z-wave js, which I think sounds like the solution for installing z-wave on my NAS....but I still need the stick/hardware, right? Or can I avoid buying new hardware entirely? Apologies for the rambling - this is basically where my research has brought me and I need help to get pointed in the right direction to move forward.