The STK600-TQFP64-2 package contains a socket board and a adapter board
for the AT32UC3B 64-pins TQFP 0.5 mm pitch devices, and is an expansion
module for STK600.
STK600 must be bought separately.
See the STK600
Socket Package Selection Guide
to make sure you got the right
revision of the socket package to support your device.