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I am looking at purchasing a Dell laptop which can connect to a docking station via DisplayPort over USB-C. I would like to be able to connect to two 4k displays, but the only "compatible" docking station from Dell supports just a single 4k display (or dual FHD).

Now I am looking at other non-Dell products, but because I'm mixing brands, I am having trouble getting a straight answer for what products will or will not work together. I can find docking stations which support the monitors I want, but I want to make sure the laptop will still support multiple higher resolution monitors.

So, to the question in the title, when using DisplayPort through a docking station, are the number and resolution of monitors limited just by the dock or by the computer as well?

  • Do you want different content or duplicate content on each 4K monitor? Docking stations just provide connection points. – fixer1234 Jun 20 '18 at 19:57
  • @fixer1234 Different content - a standard extended desktop setup. – David K Jun 20 '18 at 20:01
  • The Dell built-in graphics would need to support two extended 4K displays. If it does and the only limitation is that it's missing a second port, a docking station that provides an independent port (not a pass-through of the laptop's port), that the internal graphics can see as a different output, could let you do it. But it's really driven more by the laptop than by the docking station. – fixer1234 Jun 20 '18 at 20:22
  • @fixer1234 Thanks, could you put that in an answer? – David K Jun 22 '18 at 12:04
  • I posted that as a comment because I don't think it's really an answer. You could post a real answer when you determine what is actually possible with your hardware. That would be much more useful to other readers. – fixer1234 Jun 22 '18 at 18:15

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