4 Independent Port PCI Express USB 2.0 Adapter Card - PEXUSB400

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5 out of 5
Total Reviews
Overall Satisfaction
Ease of Use

Well worth the added cost for independent buses

by TimL on 1/25/2013

This card is awesome and works flawlessly. I plugged it into a Vista box, and Windows configured it automatically without me having to install any software (the box does not even come with a disk). The card has four independent 2.0 serial buses, each with a single, external USB 2.0 port. Additionally, one of the four serial buses also has an internal USB header-connector shared on the same serial bus as the external USB port. I have three Sewell HDDeck USB-to-HDMI adapters connected to this same card. That is only possible because of independent buses, with each bus having a full, dedicated bandwidth.

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Product Overview

Add four independent USB 2.0 ports capable of a maximum transfer rate of 480Mbps per port to a PCI Express PC. The PEXUSB400 4 Port PCI Express USB 2.0 Adapter Card lets you connect up to 4 USB 2.0 external peripherals to your PCIe-enabled computer, with unique capability to provide full high-speed USB data transfer rates of up to 480 Mbps on each port independently.

The high-speed adapter card installs easily in an x1 PCI Express slot, and with 4 independent USB 2.0 ports, can address up to 127 USB devices per port for a maximum of 508 USB devices. This adapter also includes one shared internal USB header for connecting internal USB 2.0 peripherals.

This product is backed by's Lifetime Warranty and FREE LIFETIME technical support.


Mfg Part# PEXUSB400
SKU 216472075
UPC 065030840033
UPC 14 00065030840033
Sales Rank 26145
Product Type USB Adapter / USB Adapter
Green Compliant Yes / Yes
Green Compliance Certificate/Authority RoHS / RoHS
Total Number of USB Ports 4 / 4
Height 2.7" / 2.7"
Width 3.4" / 3.4"
Brand Name /
Form Factor Plug-in Card / Plug-in Card
Manufacturer /
Product Model PEXUSB400 / PEXUSB400
Product Name 4 Independent Port PCIe USB 2.0 Adapter Card / 4 Independent Port PCIe USB 2.0 Adapter Card
Manufacturer Part Number PEXUSB400 / PEXUSB400
Limited Warranty 2 Year / 2 Year
Host Interface PCI Express / PCI Express
Thickness 830 mil / 830 mil
Weight (Approximate) 1.76 oz / 1.76 oz
Tech Specs
Ports 4 x Type A Female USB 2.0 - USB External
Product Type USB Adapter
Manufacturer Part Number PEXUSB400
Manufacturer Website Address
Product Model PEXUSB400
Product Name 4 Independent Port PCIe USB 2.0 Adapter Card
Brand Name
Additional Information Four independent/dedicated USB 2.0 ports ensure that you get the maximum performance possible from your connected USB 2.0 peripherals. Each port supports up to 127 USB devices, enabling a maximum of 508 connected USB peripherals. Backed by a lifetime warranty and free lifetime technical support.
Green Compliance Yes
Green Compliance Certificate/Authority RoHS
Dimensions 2.69" Height x 3.43" Width x 0.83" Thickness
Weight (Approximate) 1.76 oz
Form Factor Plug-in Card
Host Interface PCI Express
Data Transfer Rate 480 Mbps USB 2.0 High Speed
Platform Support PC / Mac
Standard Warranty Lifetime
$81.99 + $10.59 shipping
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Recent Product Reviews

Well worth the added cost for independent buses by TimL on Jan 25, 2013