Things you will need:
1. Motorola Lapdock (charged or with power adapter)
2. Google ChromeCast
3. HDMI-A female to HDMI-D male adapter
4. HDMI-D coupler
5. Very short or in this case a retractable USB-A to USB-micro cable
So it looks like this.
And Presto! Just be very careful as this causes high leverage on the port!
I started using this with the amazon firestick. This truly makes it a stand alone portable/cordless wifi-TV!
speakers are WAY to quiet and I will have a fix for that sometime in the future.