Help ID oddball SCSI controller

Hi, I've got an oddball SCSI controller card that I would like help identifying (actually, I have several *different* ones but we'll start with this one :> ) Card is full length. PCI. Appears to be made by IBM (FRU 76H6875). Has three AIC-7880's on it connected to three "internal" wide SCSI-2 connectors -- and a single external connector presumably tied to one of these three busses. Onboard PowerPC and what appears to be a connector for a flying CF card. A pair of 10 pin headers one of which has a "SERIAL" legend nearby. A third header labeled JTAG (no doubt for manufacturing diagnostics). External connector appears to be LVD or SE (bummer, I was hoping to find a HVD in this box of goodies...) I'll assume it's a RAID controller. But, question is how well (if at all!) it is supported and whether it is worth my time or if I should just toss it in the box and dig out the next "mystery card"? Thanks! --don