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Sonnet Technologies Allegro Type A USB 3.2 PCIe 4-Port 4-port, SuperSpeed USB-A 5Gbps [USB 3.2 Gen 1] PCIe Card with USB Charging
Sonnet Technologies Allegro Type A USB 3.2 PCIe 4-Port 4-port, SuperSpeed USB-A 5Gbps [USB 3.2 Gen 1] PCIe Card with USB Charging

Sonnet Technologies Allegro Type A USB 3.2 PCIe 4-Port 4-port, SuperSpeed USB-A 5Gbps [USB 3.2 Gen 1] PCIe Card with USB Charging


- Compatible with 2019 Mac Pro
- Adds Four USB-A 5Gbps Ports to Your Computer
- Supports USB-A Bus-powered Devices with up to 2.0A Power per Port
- Supports Storage, Hubs, and Other USB-IF Compliant USB Devices
- Supports Hot-swappable Device Connection
- Works in Thunderbolt™ Expansion Systems (like Sonnet's Echo™ Express, xMac™ Pro Server, or xMac mini Server)
- Compatible with Mac®, Windows®, and Linux®
- 2-year Product Warranty
- Free Lifetime Customer Technical Support
- Designed in the USA

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Upgrade to SuperSpeed Performance

Your computer’s USB 2.0 ports are perfectly adequate for connecting mice, keyboards, and printers, but if you need to connect external storage drives, USB 2.0 ports are underpowered in more ways than one—limiting data transfer speeds to around 25–30 MB/s, they can hardly be called “high performance”. Most drives available today include faster USB interfaces and offer significantly better performance than USB 2.0-equipped drives. Though you can connect them to your computer’s USB 2.0 ports, their performance would be reduced by as much as 85 percent! Don’t settle for slow performance—install a Sonnet Allegro Type-A USB 3.2 PCIe 4-Port card to instantly add four SuperSpeed USB 5Gbps ports to your system to take full advantage of today’s drives’ performance capabilities.


PCIe Interface

The Allegro features a PCIe 2.0 bus interface to take advantage of your computer’s fast expansion card slots. This card installs easily into any PCI Express® (PCIe) slot that supports a full-height card, features hot-pluggable and hot-swappable device connection support with automatic device configuration, and works with all USB-IF compliant USB peripherals.


Powerful Ports

Sonnet specially engineered the Allegro PCIe card to provide extra power through its ports without the need for you to connect an auxiliary power cable. Delivering up to 10W of power per port, this Sonnet solution supports USB 3.0 bus-powered hard drives, SSDs, DVDs & Blu-ray™ devices without the need to connect an additional AC power adapter. The Allegro also supports the USB 3.0 charging specification that enables you to simultaneously charge and sync your iPad®, iPhone®, or other device that supports USB 3.0 charging!


Add Four USB 3.0 Ports to Older Mac Computers with USB 2.0

Got an older Mac with USB 2.0 ports, no PCIe slots, and a Thunderbolt or Thunderbolt 2 port? The Allegro is a great way to add four USB-A 5Gbps ports for use in Sonnet’s Thunderbolt 2 and Thunderbolt 3 to PCIe card expansion systems, including Echo Express™ and xMac™ desktop and rackmount systems.


Perfect for the Extra Slot in Your Multi-Slot Thunderbolt System

Have a multi-slot Thunderbolt 2 or Thunderbolt 3 to PCIe card expansion system with an open slot? Installing an Allegro Type-A USB 3.2 PCIe 4-Port card is an excellent way to inexpensively add four SuperSpeed USB-A 5Gbps ports to your computer.




Mac Compatibility

- Mac Pro® (3,1, 4,1, 5,1, or 7,1 [2019]) (compatible with Mac Pro 3,1 PCIe 1.1 slot)

- macOS 10.8.5+

- macOS Big Sur compatible


Windows Compatibility

- Computer with PCIe slots

- Windows® 10, 8, 7

- Windows Server 2019, 2016, 2012, 2008 (64-bit editions)


Linux Compatibility

- Computer with PCIe slots

- Linux Kernel 5.4.0+

- Ubuntu 20.04.1+


Thunderbolt Compatibility

- Mac (Intel® or M1) or Windows PC via a Thunderbolt to PCIe Card Expansion System

- macOS 10.8.5+

- Windows 10 Build 1703 or newer (64-bit)







Form Factor

PCIe computer card


Bus Interface

PCI Express 2.0 x1


Peripherals Supported

Industry standard USB 3.2 Gen 1&2, 3.1 Gen 1&2, 3.0, 2.0, and 1.1


Bus Powered Peripherals Supported

HDs, SSDs, DVDs, and Blu-ray devices up to 2A per port


Cables Supported

USB 3.0 with Standard-A male connector, USB 2.0 with Standard-A male connector



Fresco Logic


RoHS Compliant



USB Support


Number of Ports

4 external



Complies with OHCI (Open Host Controller Interface), EHCI (Enhanced Host Controller Interface), and xHCI (eXtensible Host Controller Interface) standards



USB attached SCSI protocol supported under OS X 10.8.5+ and Windows 8.1+


USB Charging

USB Battery Charging 1.2 Compliant (up to 7.5W per port)


Data Transfer Rate

5 Gbps


Number of Devices Supported

Up to 31


Hot Plug

Supports hot-pluggable and hot swappable device connection


Boot Support

Thunderbolt 3 Macs

In the box

- Allegro USB 3.0 4-Port PCIe Computer Card
- Documentation


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