ELAN's Uxxx series of adapters are USB to PCMCIA CardBus adapters.
Currently only the U132 adapter is available.

The U132 is specifically designed for CardBus PC cards that contain
an OHCI host controller. Typical PC cards are the Orange Mobile 3G
Option GlobeTrotter Fusion card. The U132 adapter will *NOT* work
with PC cards that do not contain an OHCI controller. To use a U132
adapter you will need this "ftdi-elan" module as well as the "u132-hcd"
module which is a USB host controller driver that talks to the OHCI
controller within CardBus card that are inserted in the U132 adapter.

This driver has been tested with a CardBus OHCI USB adapter, and
worked with a USB PEN Drive inserted into the first USB port of
the PCCARD. A rather pointless thing to do, but useful for testing.

See also the USB_U132_HCD entry "Elan U132 Adapter Host Controller"

It is safe to say M here.

source code:

drivers/usb/misc/ftdi-elan.c