In RB4011iGS+5HacQ2HnD, the 2.4GHz wireless interface is a standard R11e-2HnD card installed in mini-PCI-e slot. Which I don't really need.
As an experiment to add some extra storage (for example, to install Dude onto), I replaced that original wireless card with a generic "mPCI-E to USB adapter" USB card, and tried connecting (through a short extender cable routed outside the enclosure) a USB flash drive, and then an SD-Card reader with a card. Neither of the 2 were recognized as "disk" - the system understands that there is a PCI device installed, but seemingly doesn't know what do do with it.
Any ideas if and how it might be possible to make this work?