The JTAG-USB cable allows you to use your PC to connect to a JTAG scan chain or to access an SPI interface on a board equipped with the appropriate 6-pin header. In this way, you can program devices on Digilent programmable logic boards using the Digilent Adept Suite. You can also program AVR micrcontrollers on Digilent embedded control boards using the Digilent AVR programmer application.
To download the newest versions of the afore-mentioned software, please visit the following pages:
Digilent Adept suite
Digilent AVR Device Programmer