How do you power this up to use a wired ethernet connection? Is there a hidden socket around the back?

Hardwiring an iPad to a network and then being able to power the iPad and use video out with a predictable video resolution would finally make this into a useful bit of kit. iPads are being used to interact with the public but they are a pain in the bum when it comes to keeping them charged and connected to a network, especially when they are also video mirroring.