Ultra-3/2 LVD, Ultra-Wide SCSI, Ultra & SCSI-2, C-SC-DC390U3W   Ultra160 Low Voltage Differential SCSI Controller kits. Internal LVD SCSI Cables and Terminators included.   * High speed 64-bit 5.0V PCI bus master (Also Compatible with    32-Bit PCI Slot) * Max Xfer Rate Supported is 200MB/Sec. (Ultra160 LVD    160MB/Sec. x 1 Channel, Ultra-Wide 40MB/Sec. x 1 Channel.) * Maximum devices supported are 30 Drives * Includes Bootable CD-ROM with Diskette Make utility * Flash BIOS for easy Upgradeability TThe DC-390U3 Series controllers support the new Ultra160 SCSI standard for improved speed and reliability. A subset of the Ultra3 specification, Ultra160 adds the following features to Ultra2 LVD: * DTC (Double Transition Clocking) clocks data on leading and    trailing edges, and is responsible for doubling the max transfer    speed to 160 MB/Sec. * CRC (Cyclic Redundancy Check) enhances data integrity at higher    bus speeds by improving upon parity checking. * DV (Domain Validation) verifies optimum SCSI Bus    configuration by rigorously testing each device for the fastest  possible, yet safe, transfer speed. Cables Included: Internal LVD Twisted Pair with 6 Connectors support 4 devices, card & terminator.                                  Internal Ultra-Wide with 3 Connectors support 2 devices & card.                                  Internal Ultra/ SCSI-2 with 3 Connectors support 2 devices & card. Accessories Included: User Manual, Driver Disks, LVD Terminator, Ext. 50-pin Adapter. Technical Specifications: * SCSI Chip: LSI Symbios Logic SYM53C1010 Dual-Channel Ultra160 SCSI * SCSI devices: Maximum 30 devices. (1) Ultra160 Channel & (1) Ultra-Wide Channel. Supports SCSI-2, Wide,Ultra SCSI & Ultra Wide devices, as well as LVD Wide Ultra2/160 SCSI devices with 50 and  68-pin connectors. * SCSI bus transfers: Async: 5MB/sec & Sync: 160MB/sec (with Ultra160 LVD devices) * Data transfers: 266MB/sec (at 66MHz x 64Bit 5.0V PCI), 80-byte DMA FIFO for 2/4/8/16 dwords burst (PCI) * PCI Integration: Full 64-bit PCI DMA bus master, Compatible with 5V-Type 64-bit PCI Slot, Compatible with 32-Bit PCI                              Slot. Jumper-less design. Automatic SCSI bus termination. Flash BIOS for easy upgrades. * Reliability: SYMTolerANT technology with: Active negation of Data, Parity, Request, Acknowledge. Domain Validation                      ensures fast and reliable device setup. * Drivers & Utilities: Symbios Configuration Utility (Firmware), accessible during boot [CTRL-C]                                 Tekram Driver Make Utility on bootable CD-ROM allows easy creation of various driver disks. Drivers                                 are included for the following: SCO 3.2v4.2/5.0, UnixWare 2.X, DOS, Win3.1, Win95, NT 3.5X/4.X,                                 Netware 3.X/4.X. * Connectors: (1) 50-Pin Ultra/SCSI-2 Internal, (1) 68-Pin Wide/Ultra Wide SCSI Internal, (1) 68-Pin SE/LVD SCSI Internal, (1) 68-Pin SE/LVD SCSI External * System Requirements: 1 free PCI Slot (32Bit or 64Bit) 5V-Type, Plug & Play BIOS on mainboard recommended.