The device runs exactly the same as the NeoPixel, including using the NeoPixel libraries.  The only difference I can tell is that these have no Adafruit logo on the rear.

In my video, I'm running the strandtest example found on the Adafruit website here:

Notice when wiring it up, that there is a side with DIN for your signal line input.  If you want to chain more together, then link the DOUT to the DIN of your next strip.

I highly recommend ensuring you follow the Best Practices guide from Adafruit to have the best results for this device.  In particular, the usage of a capacitor across your 5v power terminals and a 300 to 500 Ohm resistor between the data output pin and the input pin to the LED strip.  Here's the link to the Best Practices guide:

These LED strips expect a 5v signal line (to be attached to the VIN connector).  Check what voltage your signal pins run at.  Standard Arduino boards tend to run at 5v signal, but many modern devices such as the ESP32 seem to commonly run at 3.3v.  A 3.3v signal line will not (in my experience) work at controlling the LED colours directly.

One way to use a 3.3v signal would be to run the signal through a Logic Level Shifter.  A video guide on how to do this can be found here:

More info regarding Logic Level Shifting is available here:

I've added some photos showing the dimensions, including the gap between the mounting/screw holes.  Note that if you're looking to mount it or use standoffs, M3 is a little too tight, you'll need M2.5 ideally, or M2 if you don't mind it being a little loosey-goosey.