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?
Wow me too. This was very confusing and annoying as my wife's cheap dock would take down the network while we were both working from home. It took several annoying incidents before we connected the incidents to the dock.
Was it actually repeating packets or was it sending out pause frames?
In my experience USB ethernet adapters send out pause frames which shit-tier switches replicate to all ports in direct contravention of the ethernet specifications.
