About This File
Couldn't find it yet, so I patched it myself. The enclosed kexts work for AMD/ATI Radeon HD 48xx cards.
All credits go to fantomas and netkas.
What's New in Version 1.0.1 See changelog
This is a new version as I messed up with some card's IDs.
Please let me know if those kexts work with HD 4890.