Allegro USB-C PCIe
Low-Profile Dual-Port USB 3.1 Gen 2 PCI Express 3.0 Card with 15W Power per port
Add SuperSpeed+ USB Technology
Add Two Powerful 10Gbps USB-C (USB 3.1 Gen 2) Connections to Your Mac Pro Tower,
Windows PC, Linux Computer(1), or Thunderbolt to PCIe Card Expansion System(3)
When it comes to supporting the fastest USB drives available, your computer’s USB 3.0 ports are perfectly adequate… for connecting peripherals that don’t depend on the ultimate USB 3.1 speeds. However, common USB 3.0 ports can be underachievers—at 5Gbps, they can’t support the maximum performance from many storage devices, and may not provide enough power to enable them to operate. You need SuperSpeed+ USB. You need Sonnet’s Allegro USB-C PCIe card.
The Allegro™ USB-C PCIe supports data transfers at up to twice as fast as USB 3.0, and can also deliver 15W of power per port to USB-C bus-powered devices (three times the 4.5W specified in the USB 3.0 spec). Don’t settle for mediocre performance or insufficient power for the fastest SSDs—install an Allegro USB-C card to instantly add two Gen 2 USB 3.1 ports to your system and take full advantage of today’s SSD performance.
Speed and Power
Sonnet's Allegro USB-C PCIe computer card supports data transfers up to 960 MB/s when connected to a USB-C Gen 2 SSD RAID device—transfers complete in half the time compared with using a USB 3.0 2.5-inch SSD! Sonnet specially engineered the Allegro USB-C card to provide 15W of power through each of its ports. The ports communicate with the host that 3A of VBUS current is available, enabling this Sonnet solution to support USB-C bus-powered SSDs and SSD RAID devices that need 15W during demanding write operations.
SuperSpeed+ USB Technology—Adds two 10Gbps USB-C (USB 3.1 Gen 2) ports to your Mac Pro® with PCIe slots, Windows® PC, Linux computer or Thunderbolt™ to PCIe card expansion system; transfers data up to 2x as fast as USB 3.0 connections
Super-Powered Ports—Supports USB-C bus-powered SSD, SSD RAID, and hard drive devices with up to 15W (3.0A) power per port
Protected Ports—Independent power regulation isolates each port to prevent cross-coupled power glitches that may cause accidental disconnects
Resettable Fuses—Device overcurrent fuses are resettable—just shut down your machine to reset a fuse without permanent damage to card or computer
PCIe Data Link Auto-Negotiation—Card auto-negotiates one lane data link in a PCIe 3.0 slot and two lanes in a PCIe 2.0 slot, ensuring full 10Gbps performance in either generation PCIe slot
Broad USB Device Support & Compatibility—Supports storage, hubs, and other USB-IF compliant USB devices
Supports Hot-Swappable Device Connection—Plug in and disconnect peripherals without shutting off your computer
Optimized for Thunderbolt—Provides maximum performance over Thunderbolt
Easy Installation—Quick and easy user installation into any available PCIe slot
Allegro USB-C PCIe SuperSpeed+ Performance
USB 3.1 Gen 2 @ 960 MB/s
USB 3.0 @ 480 MB/s
Regulates Power to Each Port
Ordinary USB-C adapter cards deal with power delivered through the ports as an afterthought, requiring an additional power source for the card and providing little regulation. The Allegro USB-C PCIe is no ordinary adapter card. The Allegro card regulates its own power without requiring a back-of-the card power cable connection, thus enabling full compatibility in any computer or Thunderbolt expansion chassis that doesn’t have these power connectors available.
Sonnet’s Allegro USB-C is unique in regulating power to each port independently, giving each one protection from power glitches on the adjacent port. Without this protection (such as found on an ordinary card), connects and disconnects of one device may cause auto-disconnects of the other.
The Allegro USB-C card features a resettable fuse on each port to protect the card and computer should there be a cable or peripheral failure. Should a fuse trip on the Sonnet card, you can reset it simply by shutting down the computer.
Sonnet's Allegro USB-C PCIe features PCI Express auto-negotiation. The card automatically negotiates to a x1 data link in a PCIe 3.0 slot, and to a x2 link in a PCIe 2.0 slot, giving full bandwidth to both generations of PCIe slots, ensuring great performance in any configuration.
Specially engineered to provide 15W of power through each port to support USB-C
bus-powered SSDs and SSD RAID devices that need 15W during demanding write operations
Optimized for Thunderbolt
Got a Thunderbolt connection, but no PCIe slot? The Allegro USB-C PCIe card is ideal for use in any Thunderbolt 2 or Thunderbolt 3 to PCIe card expansion chassis, including Sonnet’s Echo Express™ or xMac™ Thunderbolt to PCI Express card expansion systems, offering full performance wherever you install it—now you can add dual USB-C ports in any current Sonnet Thunderbolt chassis.
This Allegro USB-C PCIe card installs easily into any PCIe x4 (mechanical) slot; both low-profile and full-height mounting brackets are included. 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.
Allegro USB-C PCIe
PCIe x4 low-profile computer card; full-height mounting bracket attached, low-profile bracket included
PCI Express 2.0 x2, or 3.0 x1 auto-negotiate
Industry standard USB 3.1 Gen 2, 3.0, 2.0, and 1.1
Not compatible with Thunderbolt 3 peripherals
Bus Powered Peripherals Supported
HD, SSD, SSD RAID, DVD & Blu-ray devices
3A per port advertised using USB-C CC (Channel Configuration)
Up to 15W per port for operation or charging
Thunderbolt 3 40Gbps (0.5-meter only)
Thunderbolt 3 20Gbps
Allegro USB-C PCIe Adapter Card with attached full-height mounting bracket
Low-profile mounting bracket
Number of Ports
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
10 Gbps combined port throughput
Number of Devices Supported
Up to 31
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 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, 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(3)
Windows 10 Build 1703 or newer (64-bit edition)
Linux supports only 5Gb transfer rate as of 4.12.13 Kernel.
macOS erroneously reports a 5Gbps connection when connected at 10Gbps.
Not compatible with Thunderbolt 1 PCIe Expansion systems.
| Stock code || SCsaeU31C|
| Brand || Sonnet|
| Series || Allegro Pro USB3.1|
| Model || USB3C-2PM-E|
| Type || PCI-Express-v2-x4, 2x USB 3.1 USB-C; Mac/Windows|
| ROHS || Y|
| Date added || 04/05/2017|
USB3C-2PM-E Spec Information
| Guarantee || 1yr|
| Total Drives || 2|
| OS Support - Windows || Windows|
| OS Support - Mac/OSX || Mac Pro|
USB3C-2PM-E Spec Connections
|USB3||USB3 type A||External||4|
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