ISP programming is a fast and reliable way for programming the AVR micro controllers
as it is mounted to the board.
The STK programmer is useful in many applications from initial programming to updating
the micro controller once installed in the final device.

Remark:
If your target board have pulse power supply, it would be smart to connect GND of your computer, GND of your programmer and GND of your target board together.

In order to use an ISP programmer, the target device must be powered and have a oscillator,
as the programmer has to communicate with the target device under standard
operating conditions rather than a specific programming mode.
Wire connections must be made between the ISP programmer and the target device
for the pins SCK MOSI MOSO RST GND and VCC.

Supported Microcontrollers:
AT90S1200
AT90S2313
AT90S2323
AT90S2333
AT90S2343
AT90S4414
AT90S4433
AT90S4434
AT90S8515
AT90S8535
ATtiny12
ATtiny15
ATtiny19
ATtiny26
ATmega8
ATmega8 BOOT
ATmega16
ATmega16 BOOT
ATmega32
ATmega32 BOOT
ATmega8515
ATmega8515 BOOT
ATmega103
ATmega603
ATmega128
ATmega128 BOOT
ATmega161
ATmega161 BOOT
ATmega163
ATmega83
ATmega163 BOOT
ATmega83 BOOT
ATmega8535
ATmega8535 BOOT

This programmer works with AVR Studio 4 -> AVRprog.

Links:
Manual - http://www.sigma-shop.com/manuals/SerialAVR_manual.pdf
Support forum - http://www.sigma-shop.com/board/