Ratoc FireWire IEEE 1394 to Ultra SCSI Converter

Ratoc IEEE 1394 to Ultra SCSI Converter More Like This The FR1SX FireWire® to Ultra SCSI Converter opens a whole new world of high performance SCSI devices for systems featuring FireWire® IEEE 1394, but no SCSI ports. Attaching the converter to an Ultra SCSI storage device allows it to behave just like a FireWire® device on a FireWire® chain. Unlike competing converters, the FR1SX is Ultra SCSI rather than SCSI II based, so it offers much higher performance -- nearly twice that of other IEEE 1394 to SCSI based converters and nearly ten times that of USB to SCSI converters. Both FireWire® IEEE 1394 ports are capable of running up to 400 Mbps each. The Ultra SCSI port provide blistering performance up to 20 MBps, and interfaces with nearly all SCSI drives.

When used with the optional AC power adapter, the unit will function as an FireWire® IEEE 1394 repeater hub as long as the SCSI device is powered off. This multi-function capability, combined with its small size and light weight, makes the FR1SX an excellent choice for mobile uses. This adapter is highly recommended for applications including digital video, multimedia production, and other uses requiring high I/O performance. For external SCSI devices only.

Part Number and Description Price Add to Cart
FW-USCSI-01 Ratoc FireWire to Ultra SCSI Converter For external SCSI devices only.
Ratoc informed us the main controller chip used to make their SCSI products has been discontinued. We're sorry to announce this device is no longer available.
Optional Accessories
PS-5V2A 5VDC 2A External Power Supply/Adapter ST (USB/SCSI) [more info] $23.00 Buy Now
SCSI-RCL3025 High Density 50F to D-Sub 25M Adapter (Ultra to Fast SCSI I/II Mac) [more info] $34.00 Buy Now

Features and Specifications

CE Mark

FireWire Logo

Vista Compatibility Notes

  • Nearly two times faster than competing devices, and ten times faster than USB-SCSI converters
  • Connects directly to High Density 50 equipped SCSI devices without a costly SCSI cable
  • Works as FireWire® repeater hub with SCSI off and optional AC Power adapter
  • Instantly transforms an Ultra SCSI storage device to FireWire® device
  • Provides two FireWire® IEEE 1394 400Mbps ports (6-pin)
  • Works great with Jaz, ORB and other portable SCSI drives
  • Supports FireWire® Daisy chain capabilities
  • IEEE 1394.a compliant PHY-Link included
  • Easy installation, just Plug & Play
Warranty Information
  • Ratoc 5 Year Limited Warranty
  • 2 FireWire® IEEE 1394 6-pin connectors
  • 1 Ultra SCSI HD50 connector
  • AC Power adapter connector
Ultra SCSI Interface
  • Supports up to 20MB/sec. data transfer
  • Supports SBP2 ORB/CDB command set
  • Includes active Ultra SCSI terminator
  • Support Synchronous transfer, Disconnection/Re-connection
  • Works with various SCSI storage devices including: Hard Drives, CD-R/RW, DVD-RAM, MO, Removable Hard Drives
  • HD50P connector works with standard Ultra SCSI, SCSI II, and other HD 50P female SCSI-2 connectors
  • Firmware (Revision 1) currently does not support following functions: SCSI Printer command set, SCSI Scanner command set, Multiple SCSI ID, Multiple LUN
Data transfer rates
  • FireWire®/IEEE 1394: 100, 200 and 400 Mbps
  • Ultra SCSI: 20 MB/sec. max (synchronous)
  • Fast SCSI: 10 MB/sec. max (synchronous)
  • 6 MB/sec. max (asynchronous)
  • Ultra SCSI port works with newer SCSI standards including SCSI 160 and LVD, but transfer rates are limited to 20 Megabytes per second maximum and a connection adapter is needed for devices with HD68 etc.
System requirements
  • PC or Macintosh with FireWire® IEEE 1394 port
  • Windows 98/98SE/Millennium Edition/2000/XP/XPx64
  • Mac OS 9/9.1 or later (requires FR1SX SIM driver), MacOS X 10.1, 10.2 ,10.3, and 10.4
SCSI Device requirements
  • High-Density 50P female SCSI-2 connector
  • Term-Power output capability (will work without term-power when used with optional adapter)
  • Single-End interface
Package includes
  • FR1SX FireWire® IEEE 1394 to Ultra SCSI Converter
  • 6 pin to 6 pin FireWire® IEEE 1394 cable
  • All necessary drivers for Windows and Macintosh
  • Windows version includes FMT media formatting and partitioning utility
  • Macintosh version includes Radialogic Storage Master 1.8.2 media formatting and partitioning utility ($89.95 value)
Physical Characteristics
  • Dimensions: 55mm x 65mm x 15mm (WDH)
  • Weight: 48 g
Operating Environment
  • DC +4.25V to 5.25V (SCSI termination power voltage is required)
  • 300 mA typical
  • Temperature: 0 to 55 ° C
  • Relative humidity 20-80% (non-condensing)


W3 Document FAQ: Considerations for Ratoc's FireWire and USB 2.0 to SCSI Adapters
Extensive FAQ and important links for Ratoc FireWire and USB 2.0 SCSI products
W3 Document XP SP2 FireWire Performance Fix
Performance of 1394 devices may decrease after you install Windows XP Service Pack 2
Microsoft document and download for fixing possible performance decreases after SP2 installs
W3 Document Using Ratoc Devices in The Windows Vista
Compatibility chart, driver data, and information for Ratoc products and the Windows Vista
W3 Document Bridging FireWire 400 to FireWire 800
FAQ and product solutions for connecting between FireWire 800 and FireWire 400. Addresses 9, 6, and 4-pin scenarios.

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