I have a discontinued GNX4 work station which only supports Type I CompactFlash cards for storing memory. With this work station, I can record guitar tracks and loop them and play over them. However, one day my memory card no longer functioned and I was unable to record for the longest time. When I finally realized I could search for it on Amazon, I found this product and this one works perfectly and I can record myself playing now.
I don't have any cameras which only use Type I or anything, so sorry if you were looking for a review about taking pictures and stuff, but if you're looking for a card supported by the GNX4, this one is it!