my wii firmware is a 3.2u (finally downgraded it lol), and yes it has a wiikey 2 solderless version as well.. i have homebrew on it.
my sd looks like this
root:Apps
root:Apps/FCE Ultra/Boot.elf
root:Apps/FCE Ultra/icon.png
root:Apps/FCE Ultra/Meta.xml
root:FCEU/Roms/(bunch of .nes games...