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Hardware Installation Steps

This section covers the installation of the Allegro USB 3.0 4-Port 
card into your computer or Thunderbolt-to-PCIe expansion chassis.

 1.

 Shut down your computer or Thunderbolt-to-PCIe expansion 

chassis, and then open it to access the expansion card area 
(PCIe slots); refer to the user’s manual for specific information.

 2.

 Locate an available PCIe slot and remove its access cover. 

 3.

 Remove the Sonnet card from its packaging, and then install 

it into the PCI Express slot; 

make sure the card is firmly 

seated and secured.

 4.

 Close the computer or Thunderbolt-to-PCIe expansion chassis. 

Driver Information—OS X 

The drivers that enable the Allegro USB 3.0 4-Port card to work 
in your computer or Thunderbolt expansion chassis are installed 
as part of OS X 10.8.5 and later; the Allegro card is ready to use 
when you power on your computer.

Driver Download and Installation Steps—Windows 

 

Download and install drivers to support the Allegro card in 
computers running Windows.

 1.

 Turn on your computer and log in. During startup, a Found 

New Hardware Wizard window will appear; click Cancel.

  2. Log onto the Internet, and go to http://www.sonnettech.

com/support/kb/kb.php, click on the Computer Cards link, 
and then click on the PCIe Cards link.

 

3.

 Locate and click the Allegro USB 3.0 4-Port link, then click 

the Driver link, and then click the Allegro USB 3.0 4-Port 
Driver (Windows) link. Click the Download Now link; a new 
window or tab will open.

 

4.

 In the new window or tab, locate and click the download 

link for the latest driver for Fresco Logic FL-1000/1009 USB 
3.0 Controllers. When asked whether to run or save the 
file, click Save. If prompted to select a location to save the 
file, select a new location to save the file or accept the default 
location, and then click Save.

 

5.

 When notified the download has completed, click Open 

Folder; a new window will open.

 

6.

 Double-click the Fresco_USB3… file. When the Open File – 

Security Warning window appears, click Run.

Allegro USB 3.0 4-Port Quick Start Guide

 

7.

 When the next window appears, select a new location to save 

the files or accept the default location, and then click Extract.

 

8.

 In the location where the files were extracted, locate and 

double-click the Setup file; the driver installer will launch.

 

9.

 When the Welcome to the Fresco Logic Host Controller Setup 

Wizard window appears, click Next.

 

10.

 When the Fresco Logic xHCI Driver License Terms window 

appears, read the terms, and then click Yes.

 

11.

 When the Select Installation Folder window appears, click Next.

 

12.

 When the Ready to Install window appears, click Install. If 

you haven’t disabled User Access Control (UAC) on your 
computer, another window will appear asking you to allow 
the program to run; click Yes (or Continue); the driver will 
be installed.

 

13.

 When the Completing the Fresco Logic USB 3.0 Host Controller 

Setup Wizard window appears, click Finish; the installation is 
complete and the card is ready to use.

Known Limitations and Advice—All Users

USB and USB peripherals have some limitations you should be 
aware of, and we have listed some additional advice here. Refer to 
the peripheral manufacturers’ Websites for more information.

•  USB 3.0 devices require USB 3.0 cables to support USB 3.0 

(SuperSpeed) transfer speeds (up to 5 Gb/s). Use of USB 2.0 cables 
between USB 3.0 devices and Allegro USB 3.0 4-Port is supported, 
but data transfers are limited to USB 2.0 speeds (up to 480 Mb/s). 

•  Many peripherals require additional drivers and application 

software to operate or have full functionality. Software should 
be included with the device, or available to download from the 
manufacturer’s Website. Check the peripheral’s user’s manual 
for information about necessary software.

•  Always “eject”, “stop”, “unplug”, or “put away” any drive (hard 

drive, SSD, etc.) before disconnecting it from its cable or the 
Sonnet card. 

•  Always “eject” any memory card before removing it from the 

card reader, or disconnecting the card reader (with the card 
inserted in it) from its cable or the Sonnet card. 

•  Disconnecting drives while they are transferring or receiving 

data, may result in damage to the file(s) being transferred or 
cause your system to hang. 

•  Although many peripherals may draw power directly from the 

Sonnet card, other devices require an external power source. 
Remember to use external power supplies when necessary.

 

 Support  Note:

 Although drivers that enable the Allegro 

USB 3.0 4-Port card to operate in systems running

Windows 8 and Server 2012 are installed automatically, Sonnet 
strongly recommends you download and install the latest drivers 
through Sonnet’s website.

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