HomeLink (VC1, VC2) audi 8W b9
 

What is the difference between the homelink blocks on the 8w platform?
In ETKA there are two variants of blocks:
4M0907410 - pr-code VC1
And
4M0907410A - pr-code VC2
The forum found information that VC1 does not have a setting in MMI. And VC2 shows the settings and the number of programmed consoles in the MMI.
However, I found information that VC1 and VC2 operate at different frequencies - VC1 to 433 MHz, VC2 to 868 MHz.
What is the difference between these blocks on audi b9?
I have a gate with a frequency of 433.92 Mhz.
I do not know what to buy the unit 4M0907410 (VC1) or 4M0907410A (VC2)?
Tell me please)