This Kingston 4GB microSDHC Class 4 Flash Memory Card works great with Roku 2 or Roku 3 media players/streamers, reducing download times for their channels/games. You only need 2GB as that's even more than Rokus can use. I found this to be the cheapest micro SD card that meets the Roku specs, which have a size range of 2-32GB and a speed class of 2, 4, or 6. Larger or faster cards will not work at all or will work unreliably. Roku can't run at Class 10 or higher speeds at all, and if it's accepted, it's unreliable. Again, the size required is only 2GB compared to what the Roku 2/3 can use, but if you have an old one laying around or in there you can buy a cheaper one with more storage up to 32GB, they'll work . Just use or buy the cheapest micro SD memory card that fits the specs.
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