This product is no longer available
We no longer stock USBtinyISP microcontroller, but here are current alternatives in Microcontrollers & Development Boards.
USBtinyISP microcontroller
Discontinued
This is just the microcontroller burned with the USBtinyISP firmware code. If you're buying a kit, this is included. This is intended for people who are buying just the PCB or are experimenting with the kit and want a backup chip.