ok this HWID is listed in the
HDXSGMA4.inf file of the Realtek HDA driver, v1j4y.
the only new FF06 HDA driver is
8918 from FMWorld.net but is WHQL certified for Win10 x64 only and un-signed for anything below Win10.
you could take a chance and install it but will require clicking on the "
Install this driver software anyway" option (when the "windows cannot verify the publisher of this driver software" prompt appears) to fully install it [do NOT use Device Manager to install the 8918 HDA driver on Win7 x64 as it may reject it and say that the best driver is already installed - use the setup.exe program from the 8918 HDA driver pack to install it]. the HDXSGMA4.inf file is not included in the 8918 HDA driver but does include the generic HDXRT.inf file - 8918 HDA is supposed to be Fujitsu based but the
HDXRT.inf file was included to install on much older Fujitsu systems with HWIDs not mentioned in the HDXFJ.inf, HDXFJMA.inf & HDXFTS.inf files.