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Allegro Type A USB 3.2 | 3.0 PCIe 4-Port PCIe Card (Mac and Windows Compatible)
Sonnet

Allegro Type A USB 3.2 | 3.0 PCIe 4-Port PCIe Card (Mac and Windows Compatible)

Bottom line: The Sonnet Allegro Type A USB 3.2: Adds four USB 3.2 ports, up to 10x faster than USB 2.0; main trade-off: runs on a PCIe 2.0 bus, not a newer PCIe 3.0/4.0 interface.

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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

  • ✓ Adds four USB 3.2 ports, up to 10x faster than USB 2.0
  • ✓ Delivers 2.0A per port for bus-powered SSDs, HDDs, DVD/Blu-ray
  • ✓ Syncs and charges iPads at 1.5A over a single port
  • ✓ Drops into any free PCIe slot on Mac Pro, Windows 11, or Linux

Cons

  • ✗ Runs on a PCIe 2.0 bus, not a newer PCIe 3.0/4.0 interface
  • ✗ Needs a full PCIe slot, so no fit in laptops or many mini PCs
  • ✗ No internal header for front-panel case USB ports
  • ✗ Four ports can bottleneck heavy multi-drive workflows

Manufacturer description

USB 3.0 Runs rings around its 2.0 Predecessor - it's up to ten times faster. If you've got a mac pro or pc with pcie slots, you can upgrade your computer with this super-speedy protocol. It's just what you need for video and audio production, or any task that's data-intensive. Sonnet's allegro USB 3.0 Pcie host card sports a pcie 2.0 Bus interface and gives you four USB 3.0 Ports that work with bus-powered, hot-swappable storage devices. Ramp up your workflow with the allegro USB 3.0 And find out how fast is fast.

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SpecPicks Verdict

SpecPicks scored Sonnet Allegro Type A USB 3.2 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

  • Adds four USB 3.2 ports to your Mac Pro with PCIe slots, Windows PC, or Thunderbolt-to-PCIe card expansion chassis; transfers data up to 10x faster than over USB 2.0 connections
  • Supports USB 3.2 bus-powered hard drives, SSDs, DVDs & Blu-ray devices with up to 2.0A per port
  • Supports USB 3.2 charging port handshake, and will simultaneously synch and charge iPads and other devices that support USB 3.2 charging at 1.5A per device
  • Mac, Windows 11+, and Linux Compatible

Full Specifications

BrandSonnet
StyleClassic
Style NameClassic
Unit Count4.0 Count
ConnectivityUSB
Model NumberUSB3-4PM-E
CompatibilityPC, Mac, Linux
Built-In MediaUSB adapter
Mfr Part NumberUSB3-4PM-E
Compatible DevicesMac Pro, Windows, Linux, Thunderbolt Expansion Systems
Hardware InterfacePCI, USB 3.2 Gen 1
Warranty Description1 year warranty
Global Trade Identification Number00732311009440, 07426800095016

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Allegro Type A USB 3.2 | 3.0 PCIe 4-Port PCIe Card (Mac and Windows Compatible) 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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Allegro Type A USB 3.2 | 3.0 PCIe 4-Port PCIe Card (Mac and Windows Compatible)
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