The (AT) STK1000 was the first development kit released by Atmel for developers to adapt to the newly invented AVR32 architecture.
The STK1000 comes with virtually every feature of the AP7000 SoC wired out to connectors and test pins, including:
Support for the board in T2 is good, as it was the board where the initial T2 AVR32 port was developed and tested on.
Although the side port looks like a PCI slot it is not! It just holds most signal wires for teseting and protyping.