As I understand it, the Micro Innovations keyboard is the same thing as the Pocketop, but distributed by MI. I used it with good success on the SL-5500. I currently use the Palm IR keyboard with IRK 0.10.1. It works very well... I like it better than the Pocketop (though it is marginally bigger and uses 2 AAAs instead of only 1) because it has a "real" / key and the keys feel more like a real laptop. BTW, I don't know if Craig has merged the 0.10.1 code into the main IRK codeline yet. The driver should be on his website, once it's back up.