A:AnswerWhen it comes to extending the power cable, that is not an option currently. And when it comes to connecting, the lights do not connect to the sync box physically. The lights are connected to the sync box through the bridge wirelessly.
A:AnswerI used it on my 98' Samsung. You can mount it however fits best for your TV. I have 2 multi color play bars behind my TV as well so it works great.
A:AnswerThe serial number for a Philips Hue Play Gradient Lightstrip is located on the sticker on the back of the small, rectangular power conductor (or "RF-box") that attaches to the light strip's cable.