Uh, don't I have an HDMI port AND a DisplayPort (in the form of a USB C slot)? It's my understanding that the DisplayPort should allow for one of these hubs to drive up to at least 3 different monitors.
I'm just shooting for 2 monitors (what my mom has grown accustomed to). And, the motherboard/CPU claim they should be able to handle 4. But, just curious how that would even be possible with only 2 outputs. I guess modern monitors have both inputs and outputs so you can daisy chain them. I think the hub should work fine. But, my one worry is, do these newer monitors do something over the HDMI/DP channel to indicate that they exist?
If possible I'd rather save the PCIe slot for some other purpose like additional storage. The integrated graphics on the 8600g are more than sufficient for cat videos and spelling bee.