Just upgraded to the 722k today.
When the installer was hooking everything up, he asked if I had a network connection near the HT area. I told him no, so he went ahead and hooked up a power line adapter at my router and plugged the 722k into an outlet for instant network connection (for free - no charge for the adapter, etc.).
A couple things - you cannot use a surge protector or UPS for the 722k for this to work, the 722k has to be plugged directly into the wall. It has the network capability inside the unit; you do not have to use the ethernet plug on the back of the box. Just plug the power cord into the wall.
The power line adapter they used is a SlingLink Turbo (see attached fuzzy picture - kinda blurry cell phone photo as my wife borrowed my regular digital camera today).
The model number is shown as an SL300-100 on the unit itself, however it is not the same as this one (obviously):http://www.amazon.com/Sling-Media-Sl.../dp/B001Z5140O
Being very ignorant about these things, I guess my question is: Can I get another adapter (for instance, the one shown in the Amazon link) and also hook up my BR player, etc., to my network that way? Or does this adapter they installed only work with my 722k? That is what the installer said, but I am sure we all know that what they say isn't always correct. I did not get any packaging or documentation with it.
Hope my question is clear.
Edit: Here is a better photo showing one of these:http://cgi.ebay.com/NEW-Dish-Network...-/120585713918