Pandaboard ES OMAP4460 USB Ports Technical Specifications Question
I know nothing about 'Pandaboard'.  But a USB OTG port, acts as both Master &amp; Slave.  Depending on the spare pin of the mini usb cable (if its grounded or not). A Host port aka your PC can only talk to salves like Flash/Hard drives.  usb otg can talk to Flash drives &amp; also act like a Flash Drive too.