macbook air hub with mini display port

I am switching from Windows to Apple. I have a 27" Philips monitor with a cable that requires a mini display port which the MacBookAir does not have. Is there a hub for the Mac that includes a mini display port? Or do I need a replacement cable to use a regular USB-C port?

My existing HUB has a regular HDMI input but I haven't been able to find an HDMI cable with the special 4K connection on the monitor, which is marked "P". The monitor also has HDMI 1 and HDMI 2 inputs. Would a plain HDMI - HDMI cable work? I am waiting to hear from Philips, but can anyone else provide answers?

Many thanks.