I think your bigger problem with that board is going to be that PCIe slot is a PCIe 2.0 x1 slot so it will be slow but you can just use an adapter like this:

https://www.newegg.com/startech-com-model-pex1to162-pci-express-to-pci-card/p/N82E16815158223

Flexible versions exist too! I’m also not sure you would get a lot of benefit out of a GT730 really so YMMV.

Lots of good suggestions here already but what is your upstream DNS provider and is it your ISP DNS from DHCP?

Lots of good alternatives advice already here but I have a couple comets and they work pretty well! They don’t require cloud access except for updates if you want them, I think it has Tailscale built in as well. Their newest one has an HDMI pass through as well which is handy in some situations. I have the PoE version of the other one and it works the same way, the power control kits work too! I also have a jet KVM and it’s fine, I like the comet better I think! They have also open sourced their cloud thing so you can centrally manage them all, it’s pretty neat!