Will the 2017 15" MBP touchbar work with a Dell U3417W? I need to purchase a new MBP for my boss. He wants all of the bells and whistles and he wants a docking station at home with a nice screen. He likes the Dell U3417W but I'm not clear whether there is a way to have it work with the new MBP. 

I'm generally a PC guy so I don't feel qualified to answer the question myself. I found a short discussion about it. The Dell "liaison" recommended the user pose the question on the Apple forum. When I search the Apple forum for U3417w I don't see anything posted. 

Can anyone tell me if this will work and if not, why?
Why wouldn't it work?  It's just a monitor and the MacBook Pro is an Intel based computer.  

The MacBook Pro will support 


Up to two displays with 5120-by-2880 resolution at 60Hz at over a billion colors
Up to four displays with 4096-by-2304 resolution at 60Hz at millions of colors
Up to four displays with 3840-by-2160 resolution at 60Hz at over a billion colors


The Dell will support a maximum resolution of 3440 x 1440 at 60 Hz

Just go from DisplayPort to DisplayPort with the proper USB-C to DisplayPort cable (I prefer to avoid conversion to HDMI) and it should work just fine.

For the record, the only monitors I use are Dells.  I have sizes ranging from very old 19" DVI models to 30" Dual Link DVI models and everything in between.  I use a 24" UltraSharp at my remote office with both a MacBook Pro and a Surface Pro and it performs beautifully with zero issues.