It will have stickers on it that identify the model too. These stickers usually are intended to show evidence of tampering, so it's likely you would know if someone had messed with them.
Yes, go to Asus website and look at the display outputs on the back.
the ti has the ports in an L shape, with the display ports on top and the hdmi on the bottom.
the 3070 has the hdmi ports wedged between the display ports at the top.