Sonnet Allegro Max USB-C 20Gbps 1-Port PCIe Card
Model: USB3C-1M20G-E
About: Sonnet Allegro Max USB-C 20Gbps 1-Port PCIe Card
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®, Windows® or Linux® computer, or Thunderbolt expansion system, you can upgrade to the benefits of SuperSpeed 20Gbps USB-C!
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.
- 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.
- OS Compatibility – Compatible with macOS 14.4+, Windows 10 and 11, and Linux Kernel 5.4+
- Thunderbolt Compatibility – Works in Thunderbolt™ Expansion Systems (like the Echo™ line of desktop and rackmount Chassis from Sonnet).
- Package Contents – Solo2.5G PCIe Card, two PCIe mounting brackets.
- Warranty – 2-year product warranty.
- Customer Support – Free lifetime customer technical support.
- The Sonnet Advantage –Designed and engineered in the USA. Since 1986.
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
- 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.
UPC: 732311013829
Reviews: Sonnet Allegro Max USB-C 20Gbps 1-Port PCIe Card
Warranty: Sonnet Allegro Max USB-C 20Gbps 1-Port PCIe Card
AVShop.ca Warranty:
30 Days
Manufacturer's Warranty:
All new Sonnet Products purchased on or after January 1, 2019, have a Two Year Limited Warranty
Manufacturer's Warranty will cover parts, labour and return shipping back to you once repaired. Shipping into the service centre is not covered
For Quebec Residents - Disclosure under the Consumer Protection Act
In compliance with Bill 29, AVShop.ca and Sonnet do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Any applicable manufacturer warranties will remain in place.

























