There is a work-in-progress implementation of a full-speed (12 Mb/s) USB Host now (as of March 2010)

• Source code (subversion repository) ** http://svn.navi.cx/misc/trunk/propeller/usb-host/
• Forum Discussion ** http://forums.parallax.com/forums/default.aspx?f=25&p=1&m=440787

http://forums.parallax.com/showthread.php?p=760011

Cornell University http://www.asahi-net.or.jp/~qx5k-iskw/robot/usbhost.html http://www.mikrocontroller.net/topic/30029