The miLink HDMI adapter is designed to allow you to mirror and play content from your iOS or Android phone or tablet.
One end of the cable connects to your phone, while another connects to a display, like a TV or computer monitor.
While your laptop may have an HDMI port, this is an HDMI out port, not an HDMI in port. The out port allows you to connect your laptop to a monitor, but does not support playing external content on your laptop screen.
The Quick Summary
Laptops don't allow for HDMI inputs. Any HDMI port you see on a laptop is an HDMI out port.