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Sonnet Allegro Max USB-C 20Gbps 1-Port PCIe Card
PCI-Express x4 controller card with 1 USB-C 3.2 Gen 2x2 port
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Sonnet Allegro Max USB-C 20Gbps 1-Port PCIe Card
The Sonnet Allegro Max USB-C 20Gbps 1-Port PCIe controller card is the ideal solution for bringing a new level of performance to your computer or expansion system. Designed to take full advantage of the SuperSpeed USB-C 20Gbps (USB 3.2 Gen 2×2) standard, it adds an ultra-fast USB-C port to a Mac, Windows PC or Linux workstation with an available PCIe slot, enabling data transfers of up to 2000MB/s with high-speed storage devices.
With the Allegro Max USB-C 20Gbps 1-Port PCIe Card, Sonnet offers a high-performance upgrade for demanding users: content creators, photographers, videographers, or gamers who want to take advantage of the fastest USB-C SSDs. Simply install this card in a PCIe x4 slot, with no drivers to install, and you'll enjoy maximum throughput of 20 Gbps, 15W of power supplied directly through the USB-C port, and broad compatibility with major operating systems. Its design incorporates resettable overcurrent protection and a USB-C connector positioned to avoid interference with the chassis, ensuring efficiency, safety, and reliability in all configurations.
Key features:
- PCI-Express x4 interface with a SuperSpeed 20Gbps USB-C port (USB 3.2 Gen 2×2)
- Maximum throughput: up to 20 Gbps for fast data transfers
- Power supply: up to 15 W via USB-C port, compatible with SSDs and bus-powered USB-C devices
- Built-in resettable overcurrent fuse protection
- OS compatibility: macOS (Sonoma 14.4 and later), Windows 10/11, Linux (kernel 5.4+)
- Hot-plug support: supports hot plugging and unplugging of USB devices
- Optimised connector: positioned towards the centre of the bracket to avoid mechanical interference
- Full-height and low-profile mounting brackets included
Select your criteria
General information |
Product name |
Sonnet Allegro Max USB-C 20Gbps 1-Port PCIe Card |
Brand |
Sonnet | |
Model |
USB3C-1M20G-E | |
Technical specifications |
Bus |
PCI Express 3.0 x4 |
Connector(s) |
1 X USB 3.2 Type C | |
Supported OS |
Apple Mac OS | |
| Linux | ||
| Microsoft Windows 11 | ||
| Microsoft Windows 10 | ||
Warranties |
Commercial warranty |
Seller 2 years
|
Legal warranty |
See terms & conditions
|
See all Sonnet products
Product referenced on 6 Feb 2026
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