Home > Articles > Hardware > Upgrading & Repairing

  • Print
  • + Share This
Like this article? We recommend Upgrading Your Current System to USB 3.0

Upgrading Your Current System to USB 3.0

If you want to add USB 3.0 devices to your system and get the performance and other benefits they provide, you first need to add USB 3.0 ports to your system.

Add-on Card for Desktop Computers

Adding USB 3.0 ports via an add-on card is easier and less expensive than replacing the motherboard or purchasing a new computer. To upgrade a desktop computer to USB 3.0, you must have an available PCI Express (PCIe) slot that’s x1 or wider.

PCIe x1 cards are available from Acomdata, Belkin, Buffalo Technology, EVGA, Gigabyte, GWC Technology, HP, LaCie, Kingwin, Koutech, MSI, Rosewill, SIIG, StarTech, Vantec, and many others.

PCIe x4 cards that provide both USB 3.0 and eSATA 6GBps are currently available from ASUS, but others may become available over time.

Checking the Fine Print

Be sure to check the following issues when you compare these cards:

    Bracket types provided—If you are planning to install a USB 3.0 card into a system that uses shorter-than-normal card brackets (such as a low-profile or home theater PC), make sure you choose a card that includes a low-profile bracket.

    Auxiliary power requirements—Some cards use a four-pin hard disk (Molex) power connector, while others use a four-pin floppy power connector, an SATA power connector, or a USB motherboard header. Depending upon your power supply or motherboard design and drives in use, you might need to use an adapter or a splitter to deliver power to your card.

    Version of PCIe supported—To get the maximum level of USB 3.0 performance, make sure your card supports PCIe version 2.0 or greater. PCIe version 2.0 supports twice the bandwidth of PCIe version 1.0, and most recent motherboards support PCIe version 2.0 (check your motherboard/system documentation if you’re not sure).

    PCIe x1 versus x4—Almost all of the PCIe cards for USB 3.0 use the x1 expansion slot, which means they can fit into x1 or wider PCIe slots (x4, x8, x16). Thus, they can be used in any PCIe motherboard. Unfortunately, a PCIe x1 slot cannot provide full performance for even a single USB 3.0 port.

Differences Between PCIe x1 and x4

Wondering why your PCIe x1 slots are useless for USB 3.0?

  • The bandwidth of a PCIe x1 slot is 250MBps in version 1; most recent motherboards support PCIe version 2, which doubles each lane to 500MBps.
  • A single USB 3.0 port has a bandwidth of 600MBps.
  • Consequently, a single USB 3.0 device saturates the bandwidth of a PCIe x1 v2.0 slot, and two USB 3.0 devices (all USB 3.0 PCIe cards have two ports) receive only 250MBps each on a system running PCIe version 2 slots and a PCIe version 2 USB 3.0 card, and just half that if running on PCIe version 1 hardware.

ASUS’s U36S card works around these limitations by using a PLX bridge chip to support the PCIe x4 expansion slot’s additional lanes over x1.

These factors appear to make a PCIe x4 USB 3.0 card which also offers a couple of eSATA 6Gbps ports more attractive from a performance and feature standpoint. However, there’s still more ‘fine print’ to consider before you decide to get one:

  • Does your computer have any available PCIe x4 or wider slots? Many do not. Although you can use a PCIe x16 slot for the card, using an x16 slot might prevent your being able to run SLI or CrossFire dual graphics cards, especially on a motherboard using an Intel chipset. Note that some new motherboards use the x16 form factor for slots that have x8 or x4 connectors. Review the motherboard’s documentation to see the actual PCIe lanes supported in each slot.
  • Is your computer/motherboard compatible with the card you want to use? For example, the ASUS U3S6 card is recommended for certain ASUS motherboards only (see the “Compatible Models” list at the link). If you want to get this card to work on other motherboards, be prepared to make configuration changes to your system, as listed in some of the feedback at the Newegg website and elsewhere.
  • Does your motherboard have enough PCIe lanes to support the card and other PCIe devices you have installed (such as a second PCIe x16 card for SLI or Crossfire)? Some motherboards feature PCI Express 2.0.0 lanes mainly for graphics and PCIe v1.0 lanes (which run at half the speed of v2.0) for I/O cards. If you use dual graphics cards (NVIDIA SLI or ATI/AMD Crossfire), the motherboard must use the PCIe v1.0 lanes for your card, reducing performance (see this detailed performance review at Anandtech for more information).
  • If you plan to use the SATA 6Gbps interface, do you really need it? The only drives currently on the market that require the full performance of SATA 6Gbps are some late-model SSDs. If you’re running mechanical hard disks, SATA 3Gbps is more than fast enough for now.
  • + Share This
  • 🔖 Save To Your Account

InformIT Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from InformIT and its family of brands. I can unsubscribe at any time.


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information

To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.


Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites, develop new products and services, conduct educational research and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.


If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.


This site is not directed to children under the age of 13.


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.


Users can always make an informed choice as to whether they should proceed with certain services offered by InformIT. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.informit.com/u.aspx.

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020