SATA 3 drives are backward compatible. BUT that does not mean a 2TB drive will work in this. Why? What if the media server only supports the older 512 byte sectors? But that's not an issue here.
What I'd like to ask is why this question is asked when I see SATA 3 listed at http://www.zyxel.com/products_services/nsa221.shtml?t=p
Bob
I have a zyxel nsa 221 2 bay media server and would like to know if SATA 3 hard drives will work in it or can you only install SATA2 as i am about to buy 2 x 2tb units and dont want to buy wrong ones

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