Connect and Power Up to Eight High Performance USB Peripherals
Allegro Pro USB-C 8 Port PCIe Card with USB Peripherals
Connect and Power
eight high performance USB peripherals
Allegro Pro USB-C 8-Port PCIe Card
Allegro Pro USB-C
8-Port PCIe Card
8-port, USB-C 10Gbps (USB 3.2 Gen 2) PCIe Card with Four USB Controllers Plus USB-C Charging
compatible with Mac®,Windows®, Linux®
compatible with Mac®, Windows,®
and Linux®
PROFESSIONAL SERIES USB 3.2 PCIe CARD
PROFESSIONAL SERIES
USB 3.2 PCIe CARD
8 SuperSpeed USB 3.2 Type-C Ports
Pro Ports.
Max Performance from Each One.
First pro PCIe adapter card with eight external USB-C ports, four USB 3.2 controllers, and an x8 PCIe 3.0 bridge chip
In computers equipped with multiple expansion card slots, every slot holds significant value, as there may not be enough space to install two 4-port adapter cards. Sonnet Allegro™ Pro USB-C 8-Port PCIe Card is the first of its kind to offer eight high-performance USB-C® ports, all neatly arranged on a standard full-height PCIe card bracket. The ports are strategically spaced to allow for the connection of eight cables, including USB-C male to USB-A female adapters.

Why Sonnet? Many multi-port USB cards share the bandwidth of a single USB controller across their ports, which can reduce performance when multiple devices are connected and in use. However, when installed in a computer’s PCIe 3.0 or 4.0 slot, Sonnet’s card delivers the full 10Gbps bandwidth to each of its eight ports, guaranteeing optimal performance for every connected device.
Eight USB-C Ports Icon
Eight USB-C 10Gbps Ports
Ports are spaced to enable connection of eight cables (and even USB-C to USB-A adapters)
PCIe 3.0 Bridge Chip and Four USB 3.2 Controller Chips Icon
Four USB 3.2 Gen 2 Controllers + PCIe 3.0 Bridge Chip
x8 PCIe 3.0 bridge chip, four independent USB 3.2 controllers controlling a pair of ports each, can concurrently deliver full 10Gbps bandwidth through each port
Intelligent Power Delivery and Management Icon
Intelligent Power Delivery & Management
Independent, per-port power regulation – prevents power glitches that cause auto-disconnects of already-connected drives
Allegro Pro USB-C 8-Port PCIe Card with NVMe SSD Enclosure and SSD Module
The Most Capable 10Gbps USB Card

USB SSD Nirvana

Equipped with NVMe SSDs, the fastest USB 3.2 Gen 2 drives available can transfer data at incredible speeds. Chances are your computer has few ports capable of supporting their full performance. Upgrade your workflow in a major way by installing Allegro Pro USB-C 8-Port PCIe Card in your Mac Pro®, Windows, or Linux computer; or Echo™ III Thunderbolt™ Expansion System to support up to eight NVMe USB drives at maximum performance(1), no power adapters needed.
Compatible Computers, Notebooks, and Thunderbolt Expansion Systems

Add Eight 10Gbps USB-C Ports to Computers Without Ports (with an Allegro Card Installed in a Thunderbolt Expansion System) and Desktop Computers with an x16 PCIe Slot

Cables Connected to USB-C Ports On the Allegro Pro USB-C 8-Port PCIe Card
High Speed Simultaneous Transfers

10Gbps from Every Port!

Many multi-port USB cards are simple hubs that split a single USB controller’s bandwidth between all its ports, which limits their performance when two or more devices are connected and operating. When installed in a computer’s PCIe 3.0 or 4.0 slot, Allegro card supports eight simultaneous 10Gbps transfers. It is ideal for transferring data from multiple drives to the computer (and from drive to drive) — data transfers from a single USB 3.2 NVMe SSD device at up to 1000 MB/s. Compared to using a USB 3.1 Gen 1 or USB 3.0 adapter card, transfers complete in half the time!
Full 10Gbps Performance From All USB-C Ports IllustrationSSD RAID Drive to Drive Configuration - Data Transfers Up to 1000 MB/s
Built to Perform

Advanced Bandwidth Management Architecture

Sonnet’s Allegro card boasts an advanced architecture that delivers a full 10Gbps bandwidth to each port. It achieves this by allowing each USB controller to access two lanes of PCIe 3.0 through an x8 PCIe 3.0 bridge chip and employing sophisticated data traffic management techniques to prevent bandwidth congestion. By offering full-bandwidth PCIe bridging to four controllers and effectively managing traffic, this Sonnet card stands out as the highest-performing USB 3.2 Gen 2 PCIe card ever created.

FULL 10Gbps Bandwidth on every Port!

Allegro Advanced Bandwidth Management Architecture Illustration
PROFESSIONAL SERIES USB 3.2 PCIe CARD

Learn More About Advanced USB 3.2 Features

Multiple INs

Allegro Pro USB-C 8-Port PCIe Card implements an advanced USB 3.2 feature called “Multiple INs.” When the host computer wants to read from a device — a USB SSD, for instance — it initiates a transaction (called an “IN” transaction), waits for the device to respond with a data packet, and then sends an acknowledge response. Traditionally, the controller must wait for the first device to complete the transaction before making a request of the second device, resulting in bandwidth congestion. The Sonnet card, however, can issue a request to a device, and then proceed to issue a request to another device without waiting for the first device to respond, and so on.
Allegro USB 3.2 Advanced Feature Multiple INs Diagram
With Multiple INs - No Waiting for Multiple Device Connections
Without Multiple INs - First Device Has to Respond Before Other Devices
Sonnet Port Power Advantages
Sonnet designed the Allegro card with a focus on intelligent power delivery and management for attached drives powered through its ports — unlike ordinary USB adapter cards designed without attention to detail.

Powerfully Intelligent

7.5W of Power Icon
7.5W of Power Provided Through Each Port Simultaneously

This Allegro card supports eight USB bus-powered SSDs or hard drives.

No Auxiliary Power Required Icon
No Auxiliary Power Required

Ordinary USB cards need a separate power connection. Sonnet’s Allegro card draws all the power necessary to operate connected drives from the slot it’s installed in. This enables you to install the Sonnet card in any compatible computer or Thunderbolt expansion system regardless of it having extra power connectors available.

Independent, Per-Port Power Regulation Icon
Independent, Per-Port Power Regulation

Allegro card protects each port from power glitches on neighboring ports to prevent auto-disconnects of already-connected drives. Ordinary USB cards can deliver poor power regulation, allowing a connected drive to be forced off (auto-disconnected) when an additional drive is connected or disconnected.

Resettable Fuses Icon
Resettable Fuses

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

Key Features

8 USB-C Ports Icon

Eight 10Gbps USB-C Ports on a Single Card

Adds eight USB-C 10Gbps ports to your Mac Pro, Windows, or Linux computer; or Thunderbolt Expansion System.

8 USB-C Cables Icon

Supports Eight USB-C Cables

Ports are spaced to enable connection of eight cables (and even USB-C male to USB-A female adapters).

4 USB Controllers Icon

Four Independent USB Controllers, Full 10Gbps Bandwidth Per Port

PCIe 3.0 bridge chip and four USB 3.2 controllers enable each port to support data transfers at up to 1000 MB/s, even while transferring files from multiple drives concurrently.

Advanced Data Management Icon

Advanced Data Traffic Management

This Sonnet card supports “Multiple Ins,” which means that that the host can issue a read request to one endpoint device and then proceed with other transactions without waiting for the response from the first device, eliminating traffic congestion.

Powered Ports Icon

Powered Ports

Supports USB-C bus-powered SSD, SSD RAID, and hard drive devices with up to 7.5W power per port.

Protected Power Delivery Icon

Protected Power Delivery

Sonnet USB 3.2 cards feature a distinctive power switch for each USB 3 port, which regulates and monitors the current flow. This switch limits the current draw when a new USB 3 device is plugged in, reducing voltage droop on the main USB 5V power rail. As a result, it protects devices connected to other USB ports from losing power due to fluctuations.

4 Virtual Machines Icon

Supports Four Independent Physical Connections to VMs

Four independent USB 3.2 controllers control a pair of ports each. If your VM software supports direct physical connections, then each of the Sonnet card’s controllers can be independently attached to a separate virtual machine.

Supports Hot-Swappable Device Connection Icon

Supports Hot-Swappable Device Connections

Plug in and disconnect peripherals without shutting off your computer.

Broad USB Device Support and Compatibility Icon

Broad USB Device Support and Compatibility

Supports storage, hubs, and other USB-IF compliant devices.

Easy Installation Icon

Easy Installation

Quick and easy installation into any available x16 PCIe slot, plus no driver installation required.

Thunderbolt Logo Icon

Great for Use in Thunderbolt Expansion Systems

Use in Sonnet Thunderbolt Expansion Systems with an available x16 PCIe card slot to power and connect eight 10Gbps USB SSDs to your computer.

Mac, Windows, and Linux Compatible Icon

Mac, Windows, and Linux Compatible

Compatible with Mac, Windows, and Linux computers.

Free Lifetime Tech Support Icon

Free Lifetime Tech Support

Founded in 1986 in Orange County, Southern California — the vibrant hub of technology and engineering south of Silicon Valley — Sonnet has been at the forefront of innovation. Over the years, we've developed numerous award-winning products that enhance performance and connectivity for Mac, Windows, and other industry-standard computers. Many of our team members have been with us for over two decades, providing us with extensive expertise about our current and past offerings. If you ever need technical support for any of our products, don’t hesitate to reach out; we’re here to assist you.

Industry Leading

8-port USB 3.2 Professional PCIe Card

Eight Cables Conected to USB-C Ports On Allegro Card
Ports are spaced to enable connection of eight cables without issue
USB-C to USB-A Femail Adapters Connected to USB-C Ports
Ports also easily accept USB-C male to USB-A female adapters
Virtually Independent

Supports Four Independent Physical Connections to Virtual Machines (VMs)

Allegro Pro USB-C 8-Port PCIe Card’s four independent USB 3.2 controllers control a pair of ports each. If your VM software supports direct physical connections, then each of these four controllers can be independently attached to a separate virtual machine.
Virtual Machines Illustration
USB-C Devices
Broad Device Support

Easy Card Installation

Allegro card offers hot-pluggable and hot-swappable device connection support with automatic device configuration and works with all USB-IF compliant USB peripherals. This full-height Sonnet card installs easily into a PCIe x16 slot and does not require a driver installation.
Echo III Desktop and Echo III Rackmount Thunderbolt Expansion Systems
Got an Echo III Thunderbolt Expansion System?

Add Eight USB-C Ports Using Only One Slot

Is your computer equipped with a Thunderbolt port but lacking a PCIe card slot? Allegro Pro USB-C 8-Port PCIe Card offers exceptional performance and is perfect for use with a Sonnet Thunderbolt Expansion System. This combination allows you to connect up to eight USB devices, leveraging Thunderbolt’s high-bandwidth transfer rates, to any computer featuring Thunderbolt ports.

Allegro Pro USB-C 8-Port PCIe Card