• Overview
  • Tech Specs
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More Fire(Wire) Power

Allegro FW400 PICe FireWire ports diagramDoes your computer have enough FireWire 400 (1394a) connections for your digital device collection? FireWire 400 is still the fastest interface found on many peripherals (so much faster than USB 2.0). From external hard drives, DV camcorders, external Blu-ray burners, and audio interfaces to digital cameras and scanners, thousands of devices can connect to computers via FireWire. If you've purchased a new computer recently, you may have noticed a complete lack of FireWire 400 ports. So, how will you connect your stuff? We have a simple solution to this dilemma—install Sonnet's Allegro™ FW400 PCIe to instantly add three FireWire 400 connections to your computer!

Allegro FW400 PCIe features full-bandwidth, powered FireWire 400 ports, and supports data transfer rates at up to 400 Mbits/s. This card can power bus-powered devices (such as small external drives and audio interfaces), so some devices can be plugged in and operate without an extra connection to a power supply. The Allegro FW400 PCIe installs easily into one of your computer’s PCI Express (PCIe) slots, features hot-pluggable and hot-swappable device connection capabilities with automatic device configuration, and supports all industry standard FireWire 400 peripherals.

From importing and editing video files to backing up your computer, Sonnet’s Allegro FW400 PCIe FireWire adapter card offers exceptional speed for digital-intensive work. Spend less time on slower USB 2.0 transfer speeds and more time on being productive. Expand your computer and your possibilities all at the same time.



Key Features

Simple way to add three FireWire 400 ports to any compatible computer

Easy installation—plug and play(1)

Provides fast interface to import videos from your digital camcorder, transfer files to external drives, and more

Supports hot-swappable device connection—plug in and disconnect peripherals without shutting off your computer


Camcorder connected to Mac and PC with Allegro FW400 PCIe card

See Tech Specs Tab for footnotes
Part No.  
FW400A-E Discontinued
Warranty 1-year
Form Factor PCIe computer card
Bus Interface PCI Express x1
Number of Ports 3 external
RoHS Compliant Yes
Package Contents
  • Allegro FW400 PCIe Computer Card
  • Documentation
FireWire Support  
Standard IEEE 1394a compliant
Cables Supported 6-pin male FireWire 400 cables
Peripherals Supported Supports all industry standard FireWire 400 peripherals
Data Transfer Rate 400/200/100 Mbits/s
Number of Devices Supported Up to 63 (data only)
Hot Plug Supports hot-pluggable and hot swappable device connection
Target Disk Mode Supported
Chipset NEC


Specifications subject to change without notice.





Mac Compatibility

Mac Pro® (with card slots), OS X® 10.4+

Power Mac® G5 (with PCIe slots), OS X 10.5.7+

Xserve® (with PCIe slots), OS X Server 10.4+

OS X El Capitan compatible

Windows Compatibility

PC desktop (with PCIe slots)

Windows® 10, 8, 7, Vista®, XP (SP2)

Technical Notes

  1. Requires driver software when installed in Windows PCs.

Mac OS logoWindows logo FireWire logo PCI Express logo RoHS Compliant logo



Buzzillions Rating Mac Pro Fire[Wire] 400 Problem Solved
Connecting a Canon XHA-1 to a new Mac Pro, problems are solved by installing the Allegro FireWire 400 card. The cable 4 pin-to-800 port cable will not work with this camera and the new Mac Pro does not have 400 ports. After installing the 400 PCIe card, FCP uploads the video perfectly. A great card to make up for Apple's omission of the 400 ports. Easy to install, comes with easy instructions."
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