For $20, I'd go gigabit, look for a deal like below and you can get one cheap.
Any name brand will do, they are dumb, simple boxes. Pretty much any device that you buy to attach to your network these days will be gigabit. Even if your network is not fully gigabit now, why add anymore old technology to it?
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www.newegg.com/Product/P ··· 33122363$19.99 after the code