[for single button above ashtray]

• All of the E46 1998-2006 w/o factory monitor need HVAC relocator to get the aftermarket double din radio installed in.
• One for USB charging (3A) and one for Multimedia USB. The Power to USB charging port is from cigar light charger and it doesnt need to break any factory cable.
  The Multimedia USB port connect directly to the multimedia USB port of the aftermarket radio.

How to determine if your E46 has the "individual row" button style:
If you can see seams between the buttons or you have one button with a "blank" filling in the rest of the area, you need the "individual row" relocation bracket.
The number of buttons is irrelevant but what is crucial is whether there are vertical seams between them or not.