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Amazing USB 3.2 Gen 2 Performance
Add Two USB-C 10Gbps Ports to Mac Pro, Windows, and Linux Computers with PCIe Slots; and Thunderbolt to PCIe Card Expansion Systems
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 3.2 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-C®!
The Allegro™ USB-C PCIe card 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 3.2 ports to your system and take full advantage of today’s SSD performance.
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.
The Sonnet Speed Advantage
Featuring the latest high-performance USB 3.2 Gen 2 controller from ASMedia—the ASM 3142—the Allegro USB-C PCIe card supports concurrent data transfers up to 925 MB/s when connected to a two USB-C Gen 2 NVMe SSD devices! Most other cards limit concurrent transfers to half that, a significant disadvantage when time is of the essence.
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 is no ordinary adapter card. The 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 system that doesn’t have these power connectors available.
Sonnet’s Allegro PCIe card 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 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.
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.
This Allegro USB-C PCIe 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.
- Mac Pro® 3,1, 4,1, 5,1, or 7,1 (2019)
- macOS 10.12.6+
- macOS Big Sur compatible as follows:
1. Compatible when installed in a Thunderbolt to PCIe Card Expansion System
2. Not currently compatible with Mac Pro 7,1 (2019)
- Computer with PCIe slots
- Windows 10, 8.1, 7
- Windows Server 2019, 2016, 2012, 2008 (64-bit editions)
- Computer with PCIe slots
- Linux Kernel 5.4.0+
- Ubuntu 20.04.1+
Thunderbolt PCIe Expansion System Compatibility
Supports USB 3 devices when card is installed in a Thunderbolt to PCIe Card Expansion System
PCIe x4 low-profile computer card; full-height mounting bracket attached, low-profile bracket included
PCI Express 3.0 x2
- Industry standard USB 3.2 Gen 1, Gen 2 & 2x2; USB 3.1 Gen 1 & 2; USB 3.0, 2.0 and 1.1
- Thunderbolt 3-only peripherals are NOT supported
Bus Powered Peripherals Supported
- HD, SSD, SSD RAID, DVD & Blu-ray devices
- 3A per port advertised using USB Type-C Charging
- 15W per port for operation or charging
- USB-C 10Gbps
- USB-C 5Gbps (not recommended)
- Thunderbolt 3 40Gbps
1. These TB3 cables support Sonnet ThunderLok 3
- Thunderbolt 3 20Gbps (0.5-, 0.7-, 0.8-meter cables only)
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 10.12+, Windows 10
16 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
- Allegro USB-C PCIe Adapter Card with attached full-height mounting bracket
- Low-profile mounting bracket