I recently purchased a new tv and the roku premiere to plug into it, while the roku itself has no Ethernet plug-in, the tv does and I can successfully use the Ethernet on the tv but not the roku? When I setup my roku I think it did work with the Ethernet but once i unplugged the Ethernet, now when I plug it back in, it doesn’t connect to the roku. Do you HAVE to buy a roku ultra to use Ethernet with roku?
The only Roku Premiere model that has ethernet is/was the Roku Premiere+ 4630. Any other model number of the Premiere/Premiere+ is wireless only (no ethernet capability.)
Other than the Ultra (and newer Ultra LT models) which provide for ethernet built-in to the Roku device, you can now use an USB ethernet adapter with the new Roku Express 4k/4k+ models. (ethernet adapter has to be USB 2.0 and basically 10/100, not 10/100/1000). The Streambars are similar with respect to this ethernet adapter as well.