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It says that it is a pro micro, but I have searched the arduino website and i cannot find something that looks like this or is called this.

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  • Sparkfun created a minimal version of the Arduino micro board and called it the pro micro. sparkfun.com/products/12640 Perhaps you can use it as a normal arduino micro board (with a few missing pins) or install the Sparkfun boards. With this cheap board, you don't know what kind of bootloader it has. – Jot Oct 4 '18 at 18:02
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    If the chip is an ATmega 32u4 I would guess a cheap clone of the Sparkfun Pro Micro – Craig Oct 4 '18 at 18:05
  • @Jot It plugged it in and it is reading it as an Arduino Leonardo – Alex S. Oct 4 '18 at 18:17
  • That is the same. The arduino micro is a minimal Leonardo and the pro micro is a minimal micro. I don't know if they all share the same bootloader. Use a picture of the pinmapping learn.sparkfun.com/tutorials/pro-micro--fio-v3-hookup-guide/… and you can use it as a leonardo as well. The leds can also be used (with limitations). The 3.3v/8MHz version is slower than the 16MHz Leonardo. Since "j1" is not soldered in your photo, I assume that you have a 3.3v/8MHz version. – Jot Oct 4 '18 at 19:41
  • Oops, I see a 16MHz x-tal. Maybe you should solder jumper "j1" to make it run at 5v. – Jot Oct 4 '18 at 19:59
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An Arduino compatible board don't have to look like one in Arduino web site. There are many clones and custom boards are available. Since it says pro micro, choose Pro micro from bard option and try uploading some code.

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  • By default there is no Pro Micro support in the IDE. It needs to be installed. – gre_gor Oct 5 '18 at 16:20
  • As far as i can remember, Arduino IDE has by default support for pro micro. Even it doesn't, Leonardo has default support on arduino IDE. Which can also be choosed to program this board for testing. – B45i Oct 6 '18 at 1:44

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