Years ago, I bought a hub similar to that Satechi one. It worked great until I unplugged my laptop. Then my home network would die. After some sleuthing, I realized the RJ45 interface repeated any packets received, creating a network loop and confusing my Ethernet switch. I contacted Satechi about this obvious defect. Their support team insisted this was by design and told me to unplug USB-C power from the hub whenever I disconnected my laptop, which … kinda defeats the point?