they've got everyone confused. here's an informative thread:
http://plugcomputer.org/plugforum/index.php?topic=1551.msg9645#msg9645
on the guruplug there's no miniusb for the console; it's jtag and
you'll need the appropriately named "guruplug jtag board".
>> > In the sheeva you can access the Jtag through the usb port...
>>
>> but the (newer) guruplug does not. it requires the "guruplug jtag
>> board", for accessing the console and they don't make it obvious when
>> you order the guruplug.
>>
>>
>> They actually list the miniusb on the side is the JTAG port on their
> website. Are you saying that doesn't work?
>
> Weird.