A:AnswerAs well as configuring this as a wi-fi extender, you can configure this device to be a wi-fi- "bridge" too (which is what you are describing as requiring for your A/V receiver). It should work fine for you.
A:AnswerYes, Joe. You can connect the RE4100W directly to a working power outlet. This model does not come with any power adapter. For more details about product, you can check out this link: http://www.linksys.com/us/support-article?articleNum=136673