It is a T
It is a Thunderbolt Dock hub with a 2.5GB port, that sends ethernet out via Thunderbolt 4 usb-c to MacBook Pro M4.
Well, I did nothing and I have LAN 3 port active again at 1GB connection speed.
I just installed a new ASUS ZenWiFi BT10, updated to latest firmware, and connected BT10 to 1GB Fiber using 20-ft Cat 8 flat cables.
I was experiencing wired 941 up/down internet speeds on 10G LAN2 and 3 ports.
Then all of a sudden, I am now showing a yellow 100 Mbps notice on both 10G LAN2...