A:AnswerYes you can. I have the first elite and this was my bane. An expensive controller that can't be used on a PC. Luckily they fixed that with the new elite controller. Anyways, this allowed me to use my first gen elite on my PC!
A:AnswerIt's to help connect your Xbox controller to your pc if you don't have Bluetooth on your PC or if you have the Xbox one controller that wasn't Bluetooth capable.
A:AnswerNo this plugs into your pc to use a wireless Xbox controller on your pc to play games. Your Xbox One already connects to controllers without this device
A:AnswerThere is no input for a mic on the wheel itself, therefore I believe a Bluetooth headset is the only way you would be able to communicate verbally with other players.
A:AnswerIf your windows computer has bluetooth, you don't /need/ this adapter, however, I found with bluetooth that my controller would drop at times. I searched online and found others had the same problem. Someone said this adapter fixed that so I bought the adapter and it's been perfect ever since.
One nice thing about the adapter is that you can put it on a usb extension cable to get it closer to the controller - I have a cheap little usb hub on my desk with all my wireless adapters (mouse, keyboard, xbox controller) - this way the wireless signal doesn't have to pass through the top of my desk, nor any metal.