What do you suppose would happen if the technology of the 2010s was introduced to people living in the late 1600s?

I'm currently planning a novel about a group of people who travel through a portal in spacetime from an Earth-like planet in 2016 to the planet Earth in 1673. What effects do you think it would have if those people established a settlement in a world where their technology didn't exist?

Edit: I'm a goober. I really should've mentioned: these guys are very well-equipped. We're talking about 150 people (at first going up to about 1250 people later on), most of them being members of a paramilitary group that just won a war against another faction through sheer force of arms. The portal they travel through is huge, and it stays open for years before it closes. I feel like a doofus for not clarifying.