Are the MOSI, SS, MISO and SCK-pins not useable for digital I/O?
Do you know what those abbreviations mean ?
Ahhh, I just noticed that the Leonardo – unlike the Micro – doesn’t lead the MISO, MOSI, SS and SCK pins to the outside (except for the ICSP-header). So probably just a simple copy&paste mistake in the description page?
No .it's not. they are on the ISCP 6-pin header on the end of the board opposite the end with the USB.