Allegro USB PCIe [USB2-E]

Sonnet Allegro Express USB 2.0 PCIe


External 4-port + internal 1-port USB 2.0 PCIe card.

20 in stock

SKU: USB2-E. Categories: , .

Product Description

Add More USB Connections Without Compromise

Peripherals connected to Sonnet USB adapter cardEverybody’s got USB 2.0 peripherals— keyboards, mice, printers, scanners, joysticks, digital cameras, external drives, an iPod®, an iPhone®—and there never seems to be enough ports on a computer to plug all of them in at the same time. Problem solved—install a Sonnet Allegro™ USB PCIe in your computer to add five more USB 2.0 ports! Considering a hub? Consider the tradeoffs. Every peripheral you plug in has to share a single port’s bandwidth (potentially affecting the devices’ performance), and you may have to plug it into a power outlet as well as your computer in order to operate some devices.

Allegro USB PCIe USB ports diagram

Key Features

Adds five USB 2.0 ports to any compatible computer without the tradeoffs of a hub

Supports hot-swappable device connection—plug in and disconnect peripherals without shutting off your computer

Supports bus-powered devices without a separate power supply

Easy installation—plug and play—no drivers to install


Sonnet’s Allegro USB PCIe adds five (four external, one internal) high-speed USB 2.0 connections to your computer without the need for an external box or AC power adapter—no trade-offs necessary. This Sonnet adapter features hot-pluggable and hot-swappable device connection support with automatic device configuration, so you can plug in and disconnect devices without having to shut down your computer. Each of Allegro USB PCIe’s five powered ports supports bus-powered peripherals (devices that work without a separate power supply, including some small external drives and scanners) and hi-speed data transmission. With no drivers to install, this card offers simple plug and play installation in Mac and Windows computers. Allegro USB PCIe adds more USB 2.0 connectivity to your computer, outside and in, without compromise.




Part No.
USB2-E Allegro USB PCIe
Warranty 1-year
Bus Interface PCI Express x1
Number of Ports
  • 4 external USB 2.0
  • 1 internal USB 2.0
RoHS Compliant Yes
USB Support
Standard USB Specification v. 2.0/1.1/1.0 compatible. Complies with OHCI (Open Host Controller Interface) and EHCI (Enhanced Host Controller Interface)
Cables Supported USB 2.0 with Standard-A male connector
Peripherals Supported Supports all industry standard USB 2.0 and USB 1.1 peripherals
Data Transfer Rate 480/12 Mbits/s
Number of Devices Supported Up to 127
Hot Plug Supports hot-pluggable and hot-swappable device connection
Specifications subject to change without notice.




Mac Compatibility

Mac Pro

Power Mac G5 (with PCI Express slots)

OS X® 10.3+(1)

OS X Mountain Lion compatible

Windows Compatibility

PC (with PCI Express slots)

Windows® 8, 7, Vista®, and XP SP2

Technical Notes

  1. Deep Sleep not supported under OS X 10.4 or 10.3.


Mac OS logoWindows logo FireWire Logo PCI Express logo RoHS Compliant logo