pioneer avh-p4400bh

I have a Galaxy Nexus 4.2.2 which is on the compatibility list for my Pioneer AVH-P4400BH under HML. I am able to connect via Bluetooth however the USB indicates incompatible device. Pioneers website indicates HML, I do not know what this is and how to connect it.I looked it up and it looks like...

I recently hooked up a Pioneer AVH-P4400BH in my 04 Nissan 350z (with factory bose, no GPS). I got it from crutchfield so it came with everything I needed, EB bypass was a snap with a cheap 2-input switch. The sound quality is WAY better than factory, and I don't have to worry about skipping...