AFAIK they are B, I tried to verify that B4 I ordered them, so I'm assuming 3600 shouldn't be much of a problem. I just wanted to do some other stuff on the kit before I started messing too much with it. I'm gonna be away from it this week, so I needed to make sure the VCard was OK in case I had to send it back, and it's been fine gaming, so I think we're good.
I need a new KB though, my K800 was giving me grief, so it didn't make it....
Using a PS2 mechanical right now, and it's horrible!