What does "iv" stand for?

In products' names:

RS 2000 G11 12M

RS 2000 G11 iv 12M

RS 4000 G11 12M

RS 4000 G11 iv 12M

RS 8000 G11 12M

RS 8000 G11 iv 12M

For example: What's the difference between RS 2000 G11 12M and RS 2000 G11 iv 12M?

Zitat von iKameo

AFAIK "iv" stands for "international Version".

There is no technical difference between an "iv" and non "iv" version

Thanks.