So I picked up a R4 and a kingston 1gb micro just this other week. It was, and is still, my first slot 1 device and i have been very happy with it. I wanted to try out Portrait of Ruin, but found I had troubles with it, frequent freezes, etc. since my micro was not japanese :'( . As it turns out, I had also ordered an R4 for my sister. She, as a note, is not the type of person to ever play PoR. Well just before I gave my sister her R4 after setting it up I realized the text on the Micros ran in different directions. My micro's label needed to be read with the micro on its side, while my sister's kingston 1gb needed to be read standing up. I looked closer and realized her Micro said some magical words on it. Particularly SDC-10G JAPAN! I immediately swapped the micros and i've had not a hint of trouble with PoR since.