I had a raid controller with the part number
e-g900-02-4051, google suggested "hannstar" but they didn't have any info.
The card boots LSI, but again, no real info.
Inside the raid controller's setup is a way to find more information about the adapter, specifically the exact type and version running.
-In my case it was control+m during bios. The information menu, and then the adapter choice in the following submenu..
Here is the driver I found:
Server 2003 x86 floppy, windows and windows utility for the following models: 4e/Di, 4e/Si, 4e/DC, 4/DC, 4/SC, 3/QC, 3/DC, 3/DCL, 3/SC, PERC 4/Di, PERC 4e/Di, and CERC ATA100/4CH,