When using an Asus Transformer, Fpse can see the SD card in the dock. However, trying to open the SD card directory causes the screen to flash then return back to the /Removable directory.
Using a script to bind the dock's SD card directory to the internal sdcard directory, allowed Fpse to access the directory through the binded directory.
I'm not talking about the MicroSD card, I'm referring to the full size SD card that goes into the Transformer's dock.
Directory structure is: /Removable/SD
Also, the Transformer recently updated to Android 3.2, which fixed many of the problems with programs accessing the Transformer's multiple SD cards.
Also, how about giving the Transformer it's own sub-forum in the android device section? It is hailed by many reviewer's as the best Android tablet, has native joystick support, plenty of speed, good resolution, and capable of plenty of memory for roms, making it ideal for using Fpse. With the Sixaxis controller app, you can even use a wireless PS3 controller with it. What more do you want?