You do not need an "exclusive" license key to keep your ASUS machine updated. The manufacturer provides several official, free-to-use methods. 1. Using MyASUS App

You should never pay for or download "exclusive" license keys for ASUS drivers. Instead, use these official and free methods:

Q: Do I need a license key to use the utility? A: Yes, a license key is required to unlock the full features of the utility.

To obtain a license key for the ASUS Driver Update Utility, users can:

Ensure the driver date is newer than your current installation.

Regarding the "license key" and "RAR exclusive" part, I couldn't find any official information from ASUS about a specific license key or a RAR (Roshal ARchive) exclusive version. It's possible that you're looking at a third-party website or a torrent that claims to provide a license key or a cracked version of the software.