Photo 8—The STK501 development board comes with a dedicated JTAG header. The STK500 development board has no such header. A 10-pin male header with pigtails comes with the JTAG ICE to allow it to be connected to the STK500 development board and to any JTAG-capable AVR. The JTAG port resides on four pins of port C on the ATmega16.