Allegro Max USB-C 20 Gbps 1-Port PCIe Card (1 port • USB 3.2 Gen 2x2 • USB-C charging)
Part No. USB3C-1M20G-E

Maximum USB-C Performance
Allegro Max USB-C
20Gbps 1-Port PCIe Card
Stunning USB 3.2 Gen 2x2 Performance: Add One USB-C 20Gbps Port to Computers and Thunderbolt Expansion Systems with PCIe Card Slots
Your computer’s USB ports are perfectly adequate…for connecting peripherals that don’t depend on the ultimate USB 3.2 speeds. Onboard USB ports can be underachievers — at 5Gbps or 10Gbps, they can’t support the maximum performance from many storage devices and may not provide enough power to enable them to operate. With the Sonnet Allegro™ Max USB-C 20Gbps 1-Port PCIe Card installed into a PCIe slot of your Mac® (macOS® Sonoma required), Windows® or Linux® computer, or Thunderbolt expansion system, you can upgrade to the benefits of SuperSpeed 20Gbps USB-C!
Power Advantages
Unlike many ordinary USB-C cards, the Allegro Max card has the following advantages:
- Delivers 15W of power to USB-C bus-powered devices
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Doesn’t require an auxiliary power plug connection; gets the power required to operate connected drives from the slot it’s installed in
- Features a resettable fuse, protecting both card and computer should a cable or peripheral fail; resetting a tripped fuse is simple – just shut down and restart your computer
Up to Twice as Fast as a USB 3.2 Gen 2 Card
Allegro Max USB-C 20Gbps 1-Port PCIe Card supports data transfers at up to 20Gbps, twice the speed of a USB 3.2 Gen 2 card (10Gbps) and can also deliver 15W of power to USB-C bus-powered devices.


Key Features
- Adds 20Gbps USB-C Port – Adds one USB-C 20Gbps port to your computer.
- Bus-powered Support – Supports USB-C Bus-powered devices with up to 15W (3.0A) power.
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Resettable Fuse – Resettable device overcurrent fuse protects the card and computer.
- Wide Device Support – Supports storage, hubs, and other USB-IF compliant USB devices.
- Hot-Swap Support – Supports hot-swappable device connection.
- Compatibility – Mac, Windows, and Linux computers, and Thunderbolt expansion systems. See Tech Specs for details.
- Package Contents – Allegro Max USB-C 20Gbps 1-Port PCIe Card; two PCIe mounting brackets.
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Warranty – 2-year product warranty.
- Customer Support – Lifetime technical support.
- The Sonnet Advantage – Innovating technology since 1986.
Note: Computers and accessories featured in photos are not included with the product. Product specifications are subject to change without notice.
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Product Overview and Tech Specs
Visit: Product Page
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Pre-sales Questions?
Contact: sales@sonnettech.com
WARNING: California’s Proposition 65