Circuitmess Synthia - Chapter Two: First Check; Hardware Test Introduction and PC Connection

You probably already know what does the speaker look like, but if not, check the
photo below:
One of the first components you soldered was the speaker connector. That is the
small white thing at the back of the PCB.
Take the white part of the speaker and push it into the connector. If the speaker is
connected properly, you should feel click!
This is what Synthia should look like right now:
In the next chapter, we'll guide you through the hardware test.
Chapter Two - First check
Welcome to one of the most exciting parts of the assembly - the hardware test!
With it, you'll be able to check if everything is soldered properly and if everything
works as it should.
Only after doing that should we go on with assembling the casing!It would be a
lot of work to disassemble the casing if we found out something wasn't working!
That’s why it is important to do this simple check. Let's start...
Step #1
Find the USB-C cable for charging and coding you got in the box.
If you don't have that one for any reason, any USB-C cable will do.
Use it to connect the device with your PC.
Synthia should turn on immediately!