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Do you have a schematic or pinout list that shows what pins it connects to ?
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So it sounds like it is an ATtinyISP , right ? (without the reset button or cap or power led ) The one advantage I can see is that my
ATtinyISP does not have a connection for pin-1 of the ATtiny85 chip to connect to a chip select (pin-10 of arduino) so I have to add an external jumper from pin 10 to pin-1 of the attiny85 chip in order to use it.

