Be specifically careful with the usb examples. There is likely some breakage to be expected, not sure I updated all the drivers to the correct types for the respective chips.
Examples in these directories are not only for the board listed, they are simply preconfigured for those boards. If you do not find an example of the peripheral you want to use listed for your board, please look at the other boards. The differences between boards for the examples is normally only LEDs and buttons on different pins, and different memory sizes.