Functional. I use it for my 30pin dock speaker. The adapter has the audio input connector for my iPhone 5S and the 30pin female connector serve the output for both data and audio. Some adapters in the market have to use a separte audio cable to connnect which annoying me.

Works as advertised with all my equipment

Cheap price, excellent value, does what it should and has held up over the past 6 months. I would buy another one if this thing ever does actually break. For the price, you really cannot go wrong!

Can use my old cords. Thus saving me money.

This part worked for a couple of months. I was not used a lot but has now failed. I have yet to call regarding warranty.