Sonnet Allegro 4-Port USB 3.0 PCI Express Card


Key features

  • USB Adapter plug-in with PCI Express host interface
  • Featuring 4 USB ports to connect USB-compatible devices
  • USB Adapter is long-lasting, has a quieter operation, and is a reliable storage solution for your Mac
  • Adds USB Connectivity
  • Dedicated Controller

Ports 4 x USB 3.0, external port
Bus Interface 1 x PCI Express 2.0
Data Transfer Rate 5 Gbps
USB Standard USB 3.0 Type-A, Male
USB 2.0 Type-A, Male
Peripherals Supported Industry standard USB 3.0, 2.0, and 1.1 peripherals
Bus Powered:
HDs, SSDs, DVDs, and Blu-ray devices up to 2A per port
Number of Devices Supported Up to 31
System Requirements Mac Compatibility:
Mac Pro (with card slots)
OS X 10.8.5+
OS X El Capitan
PC Compatibility:
PC desktop (with PCIe slots; PCIe 2.0 slots recommended)
Windows 10
Windows 8
Windows 7
Windows Server 2012
Windows Server 2008
Thunderbolt Compatibility:
Any Mac or PC with a Thunderbolt or Thunderbolt 2 port and a Thunderbolt-to-PCIe Card Expansion System
USB Charging USB Battery Charging 1.2 Compliant (up to 7.5 W per port)
Compliance RoHS, OHCI (Open Host Controller Interface), EHCI (Enhanced Host Controller Interface), and xHCI (eXtensible Host Controller Interface)

The Allegro 4-Port USB 3.0 PCI Express Card from Sonnet is a PCI Express card equipped with four external SuperSpeed USB 3.0 ports, with a PCIe 2.0 bus interface that allows you to take advantage of your computer's fast expansion card slots. This card installs easily into any PCI Express slot that supports a full-height card, and works with all USB-IF compliant USB 3.0 and USB 2.0, peripherals.

Supports hot-pluggable and hot-swappable device connection-plug in and disconnect peripherals without shutting off your computer
Quick and easy installation into any available PCIe slot
USB attached SCSI protocol supported under OS X 10.8.5+ and Windows 8.1+
Optimized for Thunderbolt - Provides maximum performance over Thunderbolt
Storage2TB (4 x 500GB)
Noise CancelingYes
In the Box
Box Contents
Sonnet USB3-4PM-E Allegro 4-Port USB 3.0 PCI Express Card
  • Limited 1-Year Warranty
Lock SlotYes
Form FactorPlug-in Card
Beamforming SupportYes
WarrantyLimited 1-Year Warranty


Enjoy Free Standard Shipping on order of $50 or more to all state except Alaska, Hawai and Puerto Rico.  See full Shipping Policies


Most unopened items sold by Melrose Inc. in new condition and returned within 30 days will receive a refund or exchange. The return window for items sold online begins once the order has been invoiced. Invoicing happens when any part of the order is shipped, delivered by a courier service or made ready for pick up.

Software is not returnable and not refundable. All sales are final. This is generally part of all webcarts selling software. It is buyer beware. The reason for this is once an end-user customer sees a License Code then that code is 'spoiled' because they can use it to gain access to the software.  Once a License Code is registered by a customer that product is available to that customer and therefore the code cannot be returned.

See full Return Policy.