Hi everyone

Just got myself a brand new ASUS PG27AQ monitor. Plugged in using the DP cable that came in the box, but refresh rate is stuck at 30Hz. Did some research online, and tried a different cable but still couldn't get it to work. At the Nvidia control panel, I could only choose either 30Hz or 24 Hz, and it is the same with lower resolutions. Can anyone please help?

My specs:

CPU: i7-4770K
MB: ASUS Maximus VI Formula
GPU: MSI GTX980 Gaming in SLI