user52402: I'm a total newbie. I bought a Pro Micro but I didn't know that it can't be used, if you don't solder things in his holes.
I found this picture on Google:
And it seems that exists those stuffs (green and white) to test the circuit before soldering.
Do you know where can I buy them? Or do you know their name?
Thanks.

user20245: Perhaps you are looking for items like these from from a well established seller adafruit.com.  However, what you are proposing is not cheap when compared to soldering.  I would recommend you learn soldering as it will likely be the way you want to assemble your final Arduino project.

52402: <p>I'm a total newbie. I bought a Pro Micro but I didn't know that it can't be used, if you don't solder things in his holes.
I found this picture on Google:<a href="https://i.stack.imgur.com/WXxFu.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WXxFu.jpg" alt="enter image description here"></a></p>

<p>And it seems that exists those stuffs (green and white) to test the circuit before soldering.</p>

<p>Do you know where can I buy them? Or do you know their name?</p>

<p>Thanks.</p>
 20245: <p>Perhaps you are looking for items <a href="https://www.adafruit.com/product/2617" rel="nofollow noreferrer">like these</a> from from a well established seller adafruit.com.  However, what you are proposing is not cheap when compared to soldering.  I would recommend you <a href="https://learn.adafruit.com/adafruit-guide-excellent-soldering/tools" rel="nofollow noreferrer">learn soldering</a> as it will likely be the way you want to assemble your final Arduino project.</p>
