Your unit is very similar to the Eonon Android unit that many people have successfully installed. Look further at the eBay listing and you will see an illustration of the unit with wiring and part details. The unit as wpoll said is for a non-dsp E53, but can be used with an optional wiring loom. The aerial lead adaptor is shown, as is the canbus box. This connects to a provided extra short loom to the head unit. You will most likely find, as I did with my Eonon, that not all steering wheel functions are supported, but you will get volume and the ability to step forwards and backwards through music/video files as well as the scan function of the radio. Good luck!

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Neil

2016 X5 3.0D
2009 X3 3.0D
2005 X5 3.0 Diesel Sport (sold)
2007 320i (sold)