If you're going to get a keyboard interface, get the Lyra! As stated above, it's the only one that supports multiple keypresses. Read: good for games, and essential for non-standard (as in, not using SHIFT, A, CTRL or ALT) keyboard shortcuts.
And take great care when ordering the part.. DON'T get the KEYRAH. Get the LYRA
I know someone who made the mistake and didn't RTFM before hacking it into the machine. They keyrah is the *opposite* : it turns your miggy into a PC keyboard. Ok.. granted the guy was a little daft around the edges.. but still
