How Can I Add a TV to My PC Setup with No GPU Ports Left?

I was curious why you're running a CPU without internal graphics. Most motherboards have that option nowadays. Can you confirm that? Maybe your CPU just doesn't support it, but it's worth checking.

If your GPU has DisplayPort, you could daisy chain monitors to free up a port for your TV. Just keep in mind that it could either extend your display or mirror it, depending on how you set it up.

You should look into a DisplayLink dock if you're open to that, though it might not be the best solution. I would recommend getting a GPU that has at least four ports instead. It'll be much simpler in the long run.

You have a few options here! One way is to upgrade your GPU to one that supports four monitors. If that's not an option, consider using a KVM switch to alternate between one of your existing monitors and the TV. Alternatively, you could just use two monitors with the TV instead. Another idea is to plug in a Fire Stick; if your TV is a smart one, you might be able to use it as a wireless monitor. Just keep in mind that your graphics card might not handle this easily if you're trying to drive all the displays at once.