Hello KM Lee,
Does it replaces the built in ethernet adapter settings in menus or you have an additional settings for the usb adapter ?
Did you check the actual bitrate, 200 Mbit/s would be sufficient ?
Please tell us your TV model and full WebOS version, available in "About this TV" menu for LG TVs.
Even lg c9 oled is limited to 100 Mbit/s so if a gigabit adapter is supported it is a good news.
Please confirm that you talk about an usb adapter and not the pcmcia netgear GA511 adapter.
If it is really an usb adapter you use, please give us the exact model, version, chipset if available.
Is it this one ? : "Cable Matters USB to Ethernet Adapter" https://www.amazon.com/Cable-Matters-Ethernet-Adapter-Supporting-x/dp/B00BBD7NFU
You don't need to use an powered usb switch to give the adapter more power than what TV usb port can give ?
I tried an usb gigabit adapter in the lg c8 usb port, leds on it are not turning on, the adapter isn't supported and gives me an "unknown device disconnected" message when I plug out the adapter. The chipset in it is an "ASIX AX88179"
Thanks for answers