LSI 64-bit PCI-X Ultra320 SCSI Dual-Channel Host Bus Adapter - LSI22320-RB. Host interface: PCI-X. Data transfer rate: 640 Mbit/s. Certification: CE, VCCI, Canada, C-Tick, FCC class B, UL 94VO, BSMI, MIC. Operating temperature range (T-T): 0 - 55 °C, Storage temperature range (T-T): -40 - 105 °C, Operating relative humidity range: 5 - 90 %. Connectivity technology: Wired, Dimensions (WxDxH): 167.6 x 107 mm, Compatible operating systems: - Windows NT4.0, SP4, 2000, 2000 SP1 & XP - Linux 2.2 & 2.4 - NetWare 4.11, 4.2 & 5.X