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Sonnet Allegro Pro USB 3.2 Type A PCIe Card (Four SuperSpeed 10Gbps USB Connectors)
Sonnet

Sonnet Allegro Pro USB 3.2 Type A PCIe Card (Four SuperSpeed 10Gbps USB Connectors)

Bottom line: The Sonnet Allegro Pro USB 3.2 Type A PCIe Card: Four 10Gbps USB-A ports via dual USB 3.2 Gen 2 controllers; main trade-off: type-A only, so USB-C gear needs adapters or cables.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Four 10Gbps USB-A ports via dual USB 3.2 Gen 2 controllers
  • ✓ 7.5W per port powers bus-powered SSDs, SSD RAID, and hard drives
  • ✓ Independent per-port regulation prevents cross-coupled power dropouts
  • ✓ Resettable overcurrent fuses clear with a simple shutdown, no RMA
  • ✓ Driverless across macOS, Windows 11+, and Linux; 2-year warranty

Cons

  • ✗ Type-A only, so USB-C gear needs adapters or cables
  • ✗ Requires a free PCIe slot or a Thunderbolt-to-PCIe chassis
  • ✗ No USB Power Delivery, so 7.5W per port won't charge laptops

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SpecPicks Verdict

SpecPicks scored Sonnet Allegro Pro USB 3.2 Type A PCIe Card using a rating × review-volume × price-fit model applied to published specs and reviews across the expansion cards category. Sonnet's expansion cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for expansion cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • SuperSpeed+ 10Gbps USB Ports—Adds four 10Gbps USB-A ports to your Mac Pro or Windows PC computer with PCIe slots; or Thunderbolt to PCIe card expansion system
  • Dual USB 3.2 Gen 2 Controllers—Support data transfers at up to twice as fast as USB 3.0 and USB 3.1 Gen 1, and boost data transfer speeds between connected drives
  • Powered Ports—Supports USB bus-powered SSD, SSD RAID, and hard drive devices with up to 7.5W power per port
  • Protected Power Delivery—Independent power regulation isolates each port to prevent cross-coupled power glitches that may cause accidental disconnects; resettable device overcurrent fuses protect the card and computer, and may be reset by a simple shutdown
  • Mac, Windows 11+, and Linux Compatible. 2-year warranty and free lifetime customer support since 1986

Full Specifications

BrandSonnet
StyleUSB3-PRO-4P10-E
Style NameUSB3-PRO-4P10-E
ConnectivityUSB
Model NumberUSB3-PRO-4P10-E
CompatibilityPC, Mac, Linux
Built-In MediaSonnet Allegro Pro USB 3.1 PCIe Card, 4-Port SuperSpeed + USB 3.1 Gen 2 Card wit
Mfr Part NumberUSB3-PRO-4P10-E
Compatible DevicesPersonal Computer
Hardware InterfaceUSB 3.2 Gen 1
Warranty Description1 Year Limited Warranty
Global Trade Identification Number00732311012631

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Sonnet Allegro Pro USB 3.2 Type A PCIe Card (Four SuperSpeed 10Gbps USB Connectors) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Sonnet Allegro Pro USB 3.2 Type A PCIe Card (Four SuperSpeed 10Gbps USB Connectors)
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