Equipped with SSDs, the fastest 3.1 Gen 2 USB drives you can buy today are capable of 800 MB/s data transfers—many are bus-powered, too. But, most desktop computers (even new models) include generations-old USB interfaces that will throttle that performance and may not offer adequate power to allow bus-powered drives to operate. Break through the bottleneck—install Sonnet’s Allegro™ USB-C 4-Port PCIe card in your Mac Pro® tower, Windows® PC, or Linux(1) computer with PCIe slots; or Thunderbolt™ to PCIe card expansion system to support your fast USB drives at maximum performance.
Two Controllers, Four Ports
Featuring two 10Gbps USB 3.1 Gen 2 controllers and four USB-C ports, the Allegro USB-C 4-Port PCIe card supports data transfers at up to twice as fast as USB 3.0 and USB 3.1 Gen 1 ports are capable. With two controllers onboard, the Allegro card speeds data transfers between connected drives, and enables your computer to load and off-load data more quickly.
Speed and Power
Unlike other 4-port USB cards (simple hubs that split a single USB controller’s bandwidth between all four ports), Sonnet’s Allegro USB-C 4-Port PCIe computer card supports data transfers from a single USB 3.1 Gen 2 SSD RAID device at up to 800 MB/s— compared to using a USB 3.1 Gen 1 or USB 3.0 adapter card, transfers complete in half the time! Exploiting its dual controllers design, it’s possible to simultaneously transfer data to two connected drives at up to 660 MB/s each. With four drives connected, the four ports support simultaneous 300 MB/s transfers!
The Allegro card provides 7.5W of power through each of its ports, supporting USB bus-powered hard drives, and SSDs without the need to connect an additional AC power adapter.
No Auxiliary Power Required Ordinary USB-C cards need a separate power plug connection. Sonnet’s 4-port USB-C card gets the power required 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 chassis regardless of it having extra power connectors available.
Independent, Per-Port Power Regulation Ordinary USB-C cards can deliver poor power regulation, allowing a connected drive to be forced off (auto-disconnected) when an additional drive is connected or disconnected. The Allegro card protects each port from power glitches on adjacent ports, preventing auto-disconnects of already-connected drives. Resettable Fuses Unlike ordinary USB-C cards, the Allegro card features a resettable fuse on each port, protecting both card and computer should a cable or peripheral fail. Resetting a tripped fuse is simple—just shut down and restart your computer.
Optimized for Thunderbolt Got a Thunderbolt connection, but no PCIe slot? The Allegro USB-C 4-Port PCIe card 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 chassis. Now you can add four SuperSpeed+ USB-C ports to your computer without expansion card slots.
Perfect for the Extra Slot in Your Multi-Slot Thunderbolt Chassis Installing an Allegro USB-C 4-Port PCIe card in a multi-slot Thunderbolt 2 or Thunderbolt 3 to PCIe card expansion chassis is a great way to inexpensively add four SuperSpeed+ USB-C ports to your computer. Broad Device Support, Easy Installation The Allegro USB-C 4-Port PCIe card features 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 any PCIe x4 (mechanical) or larger slot.
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
macOS 10.10 & 10.12+, Windows 10
Alternate Modes Support
20Gbps combined port throughput
Number of Devices Supported
Up to 62
Supports hot-pluggable and hot swappable device connection
No computers support booting at this time
Specifications subject to change without notice.
Mac Pro® 3,1(1), 4,1 or 5,1
macOS 10.10.5, 10.12.6+(2) (not compatible with macOS 10.11)
macOS Mojave compatible
Computer with PCIe slots
Windows 10, 8.1, 7
Windows Server 2016, 2012, and 2008 (64-bit editions)
Computer with PCIe slots
Linux 4.12+(1) Kernel (LTS version only)
Supports USB 3 peripherals on a Mac or Windows PC when installed in a Thunderbolt 2 or Thunderbolt 3 PCIe expansion system(4)
Windows 10 Build 1709 or newer (64-bit edition)
Compatible in Mac Pro 3,1 PCIe 1.1 slot; performance may be limited by slot’s bandwidth.
macOS erroneously reports a 5Gbps connection when connected at 10Gbps.
Linux supports only 5Gb transfer rate as of 4.12.13 Kernel.
Not compatible with Thunderbolt 1 PCIe Expansion systems.
Thunderbolt 3 (40Gb/s), USB-C
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Macfixit Australia is an Australian owned and operated business based in Melbourne, Victoria and we've been operating since 2005.
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We make the following guarantees:
1. We will give you a 30-day, money-back guarantee on all our products. This means you can test drive the product in the convenience of your home. This is of course in addition to the standard manufacturer replacement warranties.
If your order contains a faulty product or a product incorrectly sent, we will of course take back the product and refund your money or send you a replacement product.
If you’re not satisfied and wish to return a product for any other reason, you can do so in the first 30 days and get your money back. Simply return all items in good working order and in undamaged original packaging and we’ll refund the cost of the product.
2. We will treat you with courtesy and respect.
3. We will answer your questions at your convenience.
4. We will quickly address any problem you experience.
You can contact us regarding any order/product related issue by calling 03 9329 4343 or emailing us via our online Contact Us page
If you experience a faulty product or an item that has been incorrectly supplied, we promise to rectify the issue as quickly as possible.
Every Macfixit Australia employee is dedicated to meeting the commitments above and to exceeding your expectations. We are working very hard to serve you better and listen carefully to your feedback. If you have any thoughts or ideas about this Guarantee or about your experience with us, we invite you to share them with us by sending us an e-mail. We take all feedback very seriously.