ATI Mobility FireGL 9000
Linux driver - OpenSource
This adapter is supported by recent versions of the 'radeon' driver as found in X.Org and XFree86.
External (VGA, DVI, SVideo)
Linux driver - Proprietary
The fglrx driver also provides 3D acceleration, but you have to use some old stuff: The ATI Mobility FireGL 9000 is only supported by fglrx drivers up to version 8.28.8 which can be downloaded here. Be aware that this driver only supports Xorg 7.1 and no newer versions!