xD Picture Card reader

Windows functionality only.  No support for xD cards at all. 

Problems

Some microSD-to-SD adapters can lead to serious problems reading your microSD card.  In such a case a normal SD card will be detected instantly but the adapter with the microSD card will fail to be recognized.  The syslog (take a look with $ tail -f /var/log/syslog while inserting the card) will only show this line: mmc0: error -110 whilst initialising SD card.  This issue is caused by a bad electrical connection, pulling the adapter out a little will solve this in most cases.  Permanent fix: use a better adapter.