Is this an Arduino Nano ESP32 S3?
Where is the Vin pin? Does it accept 6-21 V?
Are the 3V and 5V pins output?
Any other vital information available regarding this board appreciated.
Thank you.
I can see the marking.
I am new here, as you know. I got this board at a very low price on Asian mail order. Do you think I tricked myself there?
Will I have to buy one of these, pictured below?
When the board goes into a project it will likely be in my bike where 12 V is available. Will I just have to connect it to the USB-C via a 12V to 5V step down and hope for the best?
Am I likely to have other problems identifying pins or are the numbers provided on my board sufficient?
Thank you.
That might work provided you are able to identify correctly the pins of USB-C that receives 5V and GND from USB-A of PC. This could be found out easily using an AVM (analog multi meter).
Ok thanks.
I just put an ad in the post. That already has + and - indicated. So that ought to be enough to connect the step down regulator?
So there is a chance an ordinary step-down regulator will provide stable enough power for the USB C connector?
And the numbers will suffice to identify pins? That is how the Nano ESP32 indicates pins?
I just want to know that there is a chance this board is workable before I spend time on it.
That is definitely not an official Arduino Nano ESP32, but a different board with an ESP32-S3 chip in it and the same shape. Follow forum advice/instructions for generic ESP32 boards, NOT the Nano ESP32, as you will be extremely confused with pin numbers otherwise. 
Don't know the board or schematics, but I would expect that adaptor + step-down to work fine as long as your battery doesn't get too low when motor torque is applied.
Thank you. I am new here and have only used Arduino UNO R3 so far.
I don't even know how the Nano ESP32 S3 indicate its pins.
I have not yet started using this board. But when I read instructions like "connect to Arduino Nano ESP32 pin number n". Is there any special approach I can take?
Should I e.g. Google for "Which pin on a generic Nano ESP32 correspond to Arduino Nano ESP pin n?"
Because your board is not an official Arduino Nano ESP32 your topic has been moved to a more suitable location on the forum.
Thank you for moving the topic. Now I am aware of this forum category and will post accordingly in the future.
I must just decide if I draw too big problems on myself by starting to use this non legacy board. I just found one thread that said the 5V pin is used as Vin pin.
When I try to locate pins for I2C, Google describes different alternatives.
While the Nano ESP32 follows the A4/A5 standard, other "generic" ESP32 development boards (like the common 30-pin DevKit) use different defaults:
Standard ESP32 DevKits: Usually use GPIO 21 (SDA) and GPIO 22 (SCL).
ESP32-S3 DevKits: Often use GPIO 8 (SDA) and GPIO 9 (SCL)
...
One reference said that my board is "form factor compatible" with the original. So I guess I will have to compare with photos of the original (and probably buy original in the future 
).
The 5V pin is most certainly not the VIN pin. The VIN pin on a real board can accept between 6 and 21 volts
I am new and I don't want too many new things to learn at once. Will that ESP board be very different from the UNO R3, that I just started using?
My only background in this is some C programming.
Thanks. I think the info actually came from an archived thread on this forum.
I will buy a male USB C and feed it +/- 5V.
You have UNO R3 and still you have bought NANO ESP32 which has convinced me that you want to learn 32-bit MCU, WiFi, BLE Neetworking, and RTOS. In that case, you may get an ESP32 30-pin version. Nowm you can live well and play around with UNO R3 and ESP32.
Before you waste your money on power supplies, connectors, etc., you should first try to upload the blink sketch and see if you can make it work.
How about from the place where you bought it.
Why do you think it is an S3?
Providing a link to exactly what you purchased would remove several layers of potential confusion, as members could then help you interpret any (usually sparse, often confused/irrelevant) provided information. Without that, or one of us having exactly that model AND remembering where the tech info was when they bought it, you're doomed to many rounds of 'why not...' and 'it might be...'
Frankly, the ESP32 is one horridly crowded and confusing marketspace, which a newbie should navigate with caution. What you don't know may not hurt you, but it may doom your project.
This is the best I could find on AliExpress. Not sure if it helps.