It uses an LSI Fusion MPT SCSI RAID controller (Dell calls it Perc 4/Di ) drivers are available at: http://www.snc.com.tr/ftp/PXBWS/SCSI/UTILITY/CIM/install.htm It also uses a Broadcom 5704 gigabit ethernet controller. -- Mark A. Denni Engineering SupportAgilent Technologies, I/O Solutions Division