Adaptec SCSI RAID 2020ZCR. Host interface: PCI-X. Built-in processor: 64-bit/133 MHz. Operating temperature range (T-T): 0 - 55 °C. Bundled software: Adaptec Storage Manager (ASM) GUI, Minimum system requirements: Intel PC,(EMRL)/Intel RAIDIOS logic, Dimensions (WxDxH): 6.25 x 16.5 mm