**That can't be a Raspberry Pi 3 Model B+... because that model [doesn't exist](https://www.raspberrypi.org/products/)!**

The only Pi to have a Model B+ version is the [original Raspberry Pi 1 Model B+](http://uk.rs-online.com/web/p/processor-microcontroller-development-kits/8111284/). The differences between the **Pi 1** Model B and B+ are as follows:

> - Tidier layout
> - 40 General Purpose Input/Output Pins (GPIO) compared to 26 on the Pi B
> - Improved connectivity (4 USB Ports compared to 1)
> - Improved audio quality
> - Lower power consumption. Switching power regulators reduce the power consumption to between 0.5 W and 1 W
> - Push-push microSD card slot

Regardless, since your Pi specifically says 'Raspberry Pi 3 Model B V1.2', you can be absolutely sure it is, as stated, a Pi 3 Model B.

In fact, the Model B is the only model of Pi 3 available as of late 2017—[the Pi 3 Model A](https://raspberrypi.stackexchange.com/questions/50256/what-happened-to-raspberry-pi-2-and-3-model-a) hasn't yet been released. So, as of now, you can be sure that if it's a Pi 3, it's a Model B.

You might also like [this identification guide](https://www.element14.com/community/community/raspberry-pi/blog/2016/11/21/how-to-identify-which-model-of-the-raspberry-pi-you-have) if you're in any doubt as to what type of Pi you have.