How many 4k monitors can I connect to this with  1) HDMI  2) Mini display port  3) Thunderbolt?    What's the maximum refresh rate I could run with these?

I'd like to run two 4k monitors on either HDMI, mini display port or thunderbolt for my music studio running pro tools. Full performance for video editing would be nice but not essential. I have a late '13 15" MBPro with NVIDIA GeForce GT 750M 2048 MB.

Thank you for your help,

Nick in NZ

Elgato Thunderbolt 2 Dock

Elgato Thunderbolt 2 Dock

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