The built-in card reader on the E430 doesn't work under Linux.
02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 5229 (rev 01)
Not a lot of info in lspci, but a a bit of googling turned up some notes about building on Arch Linux:
Based on the notes there, I just grabbed the 5229 drivers from this page:
And from there, it just required unpacking the source and running:
$sudo make install
$sudo modprobe rtl5229
The README says you need to reboot, but modprobe worked fine for me.