The DC 390U4B supports PCI-X, with a maximum throughput of 1056 MBps. The I / O bottleneck is to the story.
The controller is equipped with at Ultra 320 cable.

Features:

• Enhanced Reliability and stability with a knock-down cooling fan
• Backward compatible with previous SCSI generations
• 133MHz, 64bit PCI-X interface, with maximum 1066 MB / s data throughput
• Support Double transition clocking; Packetized protocol; Quick Arbitration and Selection; Skew Compensation and Domain Validation

Supported protocols:
Ultra 320 LVD
LVD Ultra160/Ultra2
Ultra Wide SCSI
And Ultra SCSI-2

SCSI Processor:
LSI 53C1030 (DC 390U4W only)
LSI 53C1020 (DC 390U4B only) SCSI BIOS / Channel:


Yes (Flash)
Channel: Single (DC 390U4B), dual (DC 390U4W)

Max transfer Bate:
320 MB / Sec (Ultra320) Internal Connectors: 2x 68-pin HD +1 x (DC 390U4W only) 50-pin Ultra/SCSI-2 (DC 390U4W only) 68-pin HD (DC 390U4B only) External connections: 68 - pin HD (DC 390U4W only) 68-pin VHDCI (DC 390U4B only)










PCI interface:
64/32 bit, PCI-X (DC 390U4B)
64/32 bit, PCI-X (DC 390U4W) Max Devices:


15/30

Cables included:
Int. LVD Twisted Pair *
Int. Ultra Wide ** (DC 390U4W only)
Int. Ultra/SCSI-2 *** (DC 390U4W only)

Accessories:
User Manual
Driver Disk / S / W enhancement Disk
Ext SE 50-pin adapter (DC 390U4W only)
LVD Terminator (DC 390U4W only) drivers: DosASPI, Novell NetWare, Solaris, Sun Solaris, Windows NT/2000, Unix SCO Open Desktop / OpenServer, SCO UnixWare, Linux Cable Details: * Internal LVD Twisted Pair: (6) Connectors support 4 devices, card & term. ** Internal Ultra-Wide: (3) Connectors & card support 2 devices. *** Internal Ultra / SCSI-2: (3) Connectors & card support 2 devices.













Applications:
Internal SCSI Devices Supported: Transfer rate: 10MB/sec ~ 320MB/sec, Bus Width: 8-bit, 16-bitCD-ROM, CD-RW, DVD-ROM, MO, Tape, HDD, etc. ¡
Supported External SCSI Devices : Transfer rate: 80MB/sec ~ 320MB/sec, Bus Width: 16-bitHDD subsystem, RAID, CD-ROM, CD-RW, DVD-ROM, MO, tape, scanners, ect.