[Towing travel trailer]

I don't have anything to offer but I have the same vehicle (2018 highlander XLE) and am looking at getting a trailer hitch for it.  So I will be following this post.  

[Trailer hitch for 2017 Toyota highlander]

I am new to this forum and getting ready to purchase my first Highlander.  I plan to use the Highlander to tow a 20 foot boat (about 3,500 lbs).  The highlander that I am looking at comes with a trailer hitch.  It looks like it's a factory trailer hitch from Toyota.  Does anyone have any experience with this trailer hitch?  I attached a photo of the highlander with the trailer hitch to this email.  Sorry, it's not a very good photo.  I will have better photos when I go look at the Highlander.  

Has anyone used this hitch with a 5 pin receiver?  

Does anyone know the max trailer tongue weight that can be used with this Toyota factory trailer hitch?  

Any information would be greatly appreciated.