How to connect MacBook Pro mid-2014 to monitor: hdmi, dp or usb-c? I have a MacBook Pro mid-2014 with a HDMI port and a Thunderbolt 2 port (that I beleive doubles up as a miniDP port).

I have just bought an Acer H2777HU 27 inch (2560 x 1440 pixel) monitor. It has a HDMI port, DP port and USB-C port.

It only came with a DP cable, which does not fit the miniDP port on my MacBook.

So my question is: what is the best way to connect the two, ensuring that I get the full 2560 x 1440 resolution, 60Hz refresh and can use the built in speakers?

Is it:

HDMI to HDMI (are there different sizes of HDMI?)

miniDP to DP (does this cable exist?)

Thunderbolt 2 to USB-C (does this cable exist?)
 
Thank you
According to this answer, you are probably better off with DisplayPort.

Does USB-C to HDMI take more processing power than direct USB-C to DisplayPort?

HDMI will work, but probably only give you a 30Hz refresh rate rather than 60Hz that your system is capable of.