Ordered a Grom USB3 for my Volvo V70 and received it within a couple of days. I wanted it for mp3 playback and wasn't bothered about Bluetooth phone connection. I didnt remove the head unit instead i connected it into the rear of the car via the rti unit.Very easy to fit as it comes with vehicle specific cables. I followed the instructions for the folder structure on the mp3 drive and it worked straight away. The steering wheel controls and reversing sensors all work as they should as well. Sound quality is excellent and i have 40 albums in mp3 format @ 320kbs on a 8gb drive. Its early days but so far i am very pleased.

Cant fault the customer service but the product is hit and miss. Some days it works, others it doesn't. Just connected phone and using dashlinq but it will only play through phone. Very disappointed as this was a 65th birthday gift