Allegro Pro Type A USB 3.2 PCIe


Allegro Pro Type A USB 3.2 PCIe

4-port, SuperSpeed USB-A 10Gbps (USB 3.2 Gen 2) PCIe Card with Dual Controllers and USB Charging.


Allegro Pro Type A USB 3.2 PCIe

4-port, SuperSpeed USB-A 10Gbps (USB 3.2 Gen 2) PCIe Card with Dual Controllers and USB Charging.

SuperSpeed USB-A 10Gbps • Dual Controllers for Fast Drive-to-Drive Transfers
USB Charge & Sync • Four Ports with up to 7.5W Power per Port

Powerful USB 3.2 Gen 2 Performance
Add Four USB-A 10Gbps Ports to Mac Pro, Windows, and Linux Computers with PCIe Slots; and Thunderbolt to PCIe Card Expansion Systems

The fastest SSD-based USB 3.2 Gen 2 drives now available can transfer data at 800 MB/s—many are bus-powered, too. But, most desktop computers (including many new models) feature old-generation USB interfaces that can’t support that performance, and may not provide enough power to enable those bus-powered drives to function. Break through the bottleneck—install Sonnet’s Allegro Pro Type-A USB 3.2 PCIe card in your Mac Pro® tower, Windows® PC, or Linux computer with PCIe slots; or Thunderbolt™ to PCIe card expansion system to support your fast USB drives at maximum performance.

Two Gen 2 Controllers, Four USB-A Ports

Featuring two 10Gbps USB 3.2 Gen 2 controllers and four USB-A ports, the Allegro PCIe card supports the fastest USB drives available, yet provides the most common connection type for peripheral devices.

Key Features
  • Four SuperSpeed USB-A 10Gbps Ports—Adds four USB-A 10Gbps ports to your Mac Pro, Windows PC, or Linux computer with PCIe slots; or Thunderbolt to PCIe card expansion system
  • Powerful Performance with Dual USB 3.2 Gen 2 Controllers—Support data transfers at up to twice as fast as USB 3.0 and USB 3.1 Gen 1, and boost data transfer speeds between connected drives
  • Powered Ports—Supports USB bus-powered SSD, SSD RAID, and hard drive devices with up to 7.5W power per port
  • Supports Charge & Sync—Supports USB 3.0 charging port handshake, and will simultaneously sync and charge iPads and other devices that support USB 3.0 charging at 1.5A per device
  • Protected Power Delivery—Independent power regulation isolates each port to prevent cross-coupled power glitches that may cause accidental disconnects; resettable device overcurrent fuses protect the card and computer, and may be reset by a simple shutdown
  • Add USB 3.2 Gen 2 to Thunderbolt Expansion Systems—Add four SuperSpeed USB-A 10Gbps ports to Thunderbolt to PCIe card expansion systems
  • Easy Installation—Quick and easy user installation into any available PCIe slot
  • Broad USB Device Support & Compatibility—Supports storage, hubs, and other USB-IF compliant USB devices
The Speed and Power

Connected to a single USB 3.2 Gen 2 SSD RAID device, Sonnet’s Allegro PCIe card supports data transfers up to 800 MB/s—transfers complete in half the time compared with using a USB 3.1 Gen 1 or USB 3.0 adapter card! Made possible through the use of dual controllers, with two connected drives, each port supports simultaneous 660 MB/s transfers. With four drives connected, each port supports simultaneous 300 MB/s transfers!

Sonnet Port Power Advantages:

Unlike ordinary USB adapter cards, Sonnet’s Allegro PCIe card was designed with a focus on intelligent power management and delivery for powering attached drives through its ports.

No Auxiliary Power Needed

Ordinary USB-A cards require the connection of a separate power connector. The Allegro draws the power it needs from the slot it’s installed in to power connected drives, enabling you to install the card in any compatible computer or Thunderbolt expansion system that doesn’t have these power connectors available.

Independent Power Regulation for Each Port

Ordinary USB-A cards can provide poor power regulation through their ports. The Allegro PCIe card protects each port from power glitches on adjacent ports—such as when a hard drive spins up after connection—preventing auto-disconnects of already-connected drives.

Resettable Fuses

Unlike ordinary USB-A cards, the Allegro features a resettable fuse on each port to protect the card and your computer should a cable or peripheral fail. Resetting a tripped fuse is simple— just shut down and restart your computer.




Add USB 3.2 to Your Thunderbolt Mac

Got a Mac with a Thunderbolt connection, but no PCIe slot? The Allegro is ideal 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 Pro Type-A USB 3.2 PCIe card is an excellent way to inexpensively add four SuperSpeed USB-A 10Gbs ports to your computer.



Easy Installation, Broad Device Support

The full-height Allegro PCIe card installs easily into any PCIe x4 (mechanical) or larger slot. The Sonnet card features hot-pluggable and hot-swappable device connection support with automatic device configuration, and works with all USB-IF compliant USB peripherals.

Additional information

Form Factor



Peripherals Supported

Industry standard USB 3.1 Gen 2, 3.0, 2.0, and 1.1

Bus Powered Peripherals

Up to 7.5W per port for operation or charging

Cables Supported

USB-A 10Gbps
USB-A 5Gbps
USB-A 480Mbps


2x ASMedia 3142

USB Support

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

UASP – USB attached SCSI protocol supported under macOS 10.12+, Windows 10

USB Charging – USB Battery Charging 1.2 compliant (up to 7.5W per port)
Chipset Throughput – 20Gbps combined port throughput
Number of Devices Supported – Up to 62
Hot Plug – Supports hot-pluggable and hot swappable device connection
Boot Support – No computers support booting at this time


Mac Compatibility
– Mac Pro® 3,1(3), 4,1, 5,1, or 7,1 (2019)
– macOS 10.12.6+(4)
– macOS Big Sur compatible as follows:

– Compatible when installed in a Thunderbolt to PCIe Card Expansion System
– Not currently compatible with Mac Pro 7,1 (2019)

Windows Compatibility
– Computer with PCIe slots
– Windows 10, 8.1, 7
– Windows Server 2019, 2016, 2012, and 2008 (64-bit editions)

Linux Compatibility
– Computer with PCIe slots
– Linux Kernel 5.4.0+
– Ubuntu 20.04.1+

Thunderbolt Compatibility
– Supports USB 3.1 peripherals on a Mac (Intel® or M1) or Windows computer when installed in a Thunderbolt to PCIe Card Expansion System
– macOS 10.12.6+
– Windows 10 Build 1709 or newer (64-bit edition)

In The Box

Allegro Pro USB 3.1 PCIe adapter card


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