Any one knows about it, and how it is connected to camera or power adapter.
I would love the ability to mount my DM-50 on the hot shoe and VL-3 light on something like this.
Or may be someone knows how to remake it to work.
may be connect it to DC connector on the camera?

"PC Connection to Hot Shoe Adapter

Using the PC connection in the body of your camera, converts camera with non-hot shoe to hot shoe contact. Thread bottom can be mounted onto tripods, light stands, etc. Can also be mounted onto shoe."

http://www.bhphotovideo.com/bnh/controller/home?O=productlist&A=details&Q=&sku=89982&is=REG

or something similar.

Your link does not work.

Looks like no body knows how hot shoe works?
Anybody knows what is that DC connector on the side of camera is for? Like Volts, Amps +, - etc.

Jeff: the link works fine here!