Every Ethernet connection should be Gigabit on Roku and TVs.
10/100 is Ancient technology.
Providers like mine, offer almost 500 GB downloads today.
Roku's are designed for INTERNET streaming. Even the highest-bandwidth 4K maxes out around 25Mbit.
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Correction: That's 500 MB.
@gsteng It's actually mbps. It's a significant difference between the two numbers, almost a whole decimal position. As stated by @andyross, Roku doesn't need more than 100mbps
That was a typo. I corrected it. Networks today are 1gb or 10gb.
You don't need gigabit ethernet to stream 4k. Heck 8k TVs have 100 ethernet megabits adapters too. You only need 30 megabits a second for 8k across the internet. If you want a gigabit ethernet you should be an apple TV device.