Adaptec SCSI Card 39320A-R. Host interface: PCI-X. Data transfer rate: 320 Mbit/s. Depth: 175 mm, Height: 98 mm. Connectivity technology: Wired, Compatible operating systems: Windows NT 4.0/ 2000/ XP/ 2003; UnixWare, Novell NetWare, Linux, Caldera OpenUnix 8, Compliance industry standards: RoHS