Skip to content
Free Next Working Day Delivery On Orders Over £100 ex VAT.
Trade customer? Call 0208 1919 223 for exclusive trade pricing and priority stock access.*
Official Partner

Sonnet Allegro Max USB-C 3.2 Gen 2x2 PCIe Card – 20Gbps, 15W Power, 1-Port | USB3C-1M20G-E

SKU: USB3C-1M20G-E Manufacturer: Sonnet

Product description

  • Description
  • Specifications
  • Experience Ultra-Fast SSD Transfers with Reliable 15W Power Delivery, Easy Installation & Hot-Swap Support


    BUDGET-FRIENDLY

    Connect and
    Power
    the fastest USB 3.2 SSDs

    Allegro Max
    1-Port USB-C 20 Gbps (USB 3.2 Gen 2x2) PCIe Card
    for Mac, Windows, and Linux


    Transfer Files From 20Gbps USB-C SSDs

    at Maximum Speed
    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 5 Gbps or 10 Gbps, they can’t support the maximum performance of USB 3.2 Gen 2x2 storage devices — up to 2000 MB/s — and may not provide enough power to enable them to operate. With Sonnet Allegro™ Max USB-C 20 Gbps 1-Port PCIe Card installed into a PCIe card slot of your Mac Pro, Windows or Linux computer, you can upgrade to the benefits of SuperSpeed 20 Gbps USB-C!

    Video shuttle drive.
    Mass photo storage.
    Portable gaming.


    The Sonnet Advantage

    Full Power
    Sonnet engineered the Allegro Max card to provide 15W of power through its USB-C port. The port communicates to 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.

    No Auxiliary Power Connection Required
    Ordinary USB-C adapter cards handle power delivered through their ports as an afterthought, requiring the user to connect a separate power connector. Allegro Max USB-C 20 Gbps 1-Port PCIe Card is no ordinary adapter card. The Sonnet card draws its power completely through its slot, thus enabling full compatibility in any computer system that doesn’t have these power connectors available.

    Resettable Fuse
    The Allegro Max card features a resettable fuse to protect the card and your computer in case there is a cable or peripheral short circuit. Should the fuse trip on the Sonnet card, you can reset it simply by shutting down the computer.

    Transfer Files at Up to 2000 MB/s!

    Key Features


    Transfer Files at Up to 2000 MB/s

    Supports file transfers from USB 3.2 Gen 2x2 storage devices at maximum speed.


    Plug In Without Interference
    Custom connector raised toward center of bracket prevents connector interference with PCIe slot separator.


    Protects Your Computer

    Resettable device overcurrent fuse protects your computer and the card itself should a cable or peripheral short circuit.


    Easy Installation

    Quick and easy installation into an available PCIe card slot, plus no driver installation required.


    Convenient Operation

    Plug in and disconnect peripherals without shutting off your computer.


    Computer Compatibility

    Compatible with Mac, Windows, and Linux. See Tech Specs for details.


    Easy Installation. Simple Operation.

    There’s no software for you to install — just insert Allegro Max USB-C 20 Gbps 1-Port PCIe Card into a x4 PCIe slot (both low-profile and full-height mounting brackets are included) — and then turn on your computer for an instant upgrade.

    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.



    Easy to Access Port

    Sonnet designed Allegro Max card with a custom USB-C connector that locates the port near the center of the PCIe bracket. Unlike other cards that use standard USB-C connectors that are mounted close to the edge of the bracket, this Allegro card provides plenty of clearance for you to plug in and fully seat cables.

  • Mac Compatibility Mac Pro 14,8 (2023); Mac Pro 7,1 (2019); macOS 15 and 26; not compatible with macOS 27 Windows Compatibility Windows computer with an available x4 or larger PCIe slot; Windows 11 25H2+; Windows Server 2025
    Linux Compatibility Linux computer with an available x4 or larger PCIe slot; supported Linux kernel 6.6 or later Thunderbolt Expansion System Compatibility Thunderbolt expansion system with an available x4 or larger PCIe slot
    Part Number USB3C-1M20G-E Warranty 2 Years
    Form Factor Low-profile x4 PCIe card Bus Interface PCI Express 3.1 x4
    External Connector One USB-C port Peripherals Supported Industry standard USB 3 and USB 2; Thunderbolt-only peripherals are NOT supported
    Bus-powered Peripherals Supported 3.0A advertised using USB CC (Channel Configuration); up to 15W for operation or charging Cable Recommended USB-C (20 Gbps)
    USB Chipset ASMedia 3242 USB Standard Complies with OHCI (Open Host Controller Interface), EHCI (Enhanced Host Controller Interface), and xHCI (eXtensible Host Controller Interface) standards
    UASP USB Attached SCSI Protocol supported Hot Plug Supports hot-pluggable and hot-swappable device connections
    Operating Temperatures 0°C to 35°C (32°F to 95°F) Package Contents Allegro Max USB-C 20 Gbps 1-Port PCIe Card; Two PCIe mounting brackets (full-height and low-profile)
See Before You Decide

Book a Free Product Demonstration

Compare picture quality, touchscreen performance, software and connectivity with guidance from a commercial display specialist.

Remote or on-site No obligation Expert-led session
For Integrators and Resellers

Open a Screen Moove Trade Account

Access project pricing, volume discounts, product sourcing support and faster commercial quotations for your client projects.

Trade pricing Project support Volume discounts
Apply for a Trade Account
Education & Public Sector

A simpler procurement route for schools and public organisations

Access education pricing, purchase-order support, installation services and account management for schools, academies, colleges, universities, NHS organisations, councils and government bodies.

Official Purchase Orders Accepted Verified education and public-sector organisations can order using official purchase orders with VAT-compliant invoicing.
Education and Project Pricing Request tailored pricing for classroom upgrades, multi-site deployments and larger equipment quantities.
Dedicated Account Support Receive one commercial contact for quotations, lead times, installations, product sourcing and rollout coordination.
30-Day Terms Subject to Approval Eligible institutions can apply for approved credit terms aligned with standard education and public-sector procurement.
Purchasing for a school, academy, university or NHS organisation? Register your organisation to request institutional pricing and purchase-order support.
Register Your Organisation
Trusted Store Status

Top Quality Store

Rating status, Exceptional, based on Google’s shopping experience metrics.
Exceptional

Why it matters

Demonstrates consistently strong fulfilment, service, and post-sale experience across Google signals.

Google
Top Quality Store
Built for confidence, next-day delivery options, UK-based support, trade-ready operations.
Request a quote

Get in touch

Speak directly with Screen Moove about your display, digital signage, meeting-room or AV project.

Need help choosing the right product?

Speak directly with a dedicated Screen Moove expert and get the right solution first time.

Contact us

Simply complete our contact form, and we will promptly respond to your inquiries.

If you have any questions or enquiry, please fill out the form below with all of your details and we'll get back to you shortly.

Ready to start your next AV project?

Contact our team of experts today!

Contact Us