A hotfix is available to address the USB transmission rate drop on Windows Vista-based and Windows Server 2008-based computers that are connected to some USB devices that have multiple USB endpoints

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Article ID: 954052 - View products that this article applies to.
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SYMPTOMS

When you connect a Windows Vista-based or Windows Server 2008-based computer to some USB devices that have multiple USB endpoints, the transmission rate over the USB connection may decrease significantly.

The USB transmission rate partly depends on the number of USB endpoints that are connected to the USB controller. Therefore, for each endpoint that is connected to the USB controller, the USB transmission rate will decrease slightly. However, when this problem occurs, the USB transmission rate decreases significantly more than expected.

RESOLUTION

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix on a Windows Vista-based computer, you must have Windows Vista Service Pack 1 installed on the computer. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
935791 How to obtain the latest Windows Vista service pack
No prerequisites are required for Windows Server 2008-based computers.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista and Windows Server 2008 file information notes

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.
    Collapse this tableExpand this table
    VersionProductMilestoneService branch
    6.0.6001.22xxxWindows Vista SP1 and Windows Server 2008 SP1SP1LDR
  • The .manifest files and the .mum files that are installed in each environment are listed separately in the "Additional file information for Windows Server 2008 and for Windows Vista" section. These files and their associated .cat (security catalog) files are critical to maintaining the state of the updated component. The .cat files are signed with a Microsoft digital signature. The attributes of these security files are not listed.
For all supported x86-based versions of Windows Server 2008 and Windows Vista
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Usbccgp.sys6.0.6001.2219773,21606-Jun-200801:19x86
Usbhub.sys6.0.6001.22197194,56006-Jun-200801:19x86
Hccoin.dll6.0.6001.221978,70406-Jun-200803:21x86
Hcrstco.dll6.0.6001.2219715,87206-Jun-200803:21x86
Usbd.sys6.0.6001.221975,88806-Jun-200801:18Not Applicable
Usbehci.sys6.0.6001.2219739,93606-Jun-200801:18x86
Usbohci.sys6.0.6001.2219719,45606-Jun-200801:18x86
Usbport.sys6.0.6001.22197226,30406-Jun-200801:18x86
Usbuhci.sys6.0.6001.2219723,55206-Jun-200801:18x86
For all supported x64-based versions of Windows Server 2008 and Windows Vista
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Usbccgp.sys6.0.6001.2219795,74406-Jun-200801:50x64
Usbhub.sys6.0.6001.22197269,82406-Jun-200801:51x64
Hccoin.dll6.0.6001.2219710,75206-Jun-200803:45x64
Hcrstco.dll6.0.6001.2219717,92006-Jun-200803:45x64
Usbd.sys6.0.6001.221977,68006-Jun-200801:50x64
Usbehci.sys6.0.6001.2219749,66406-Jun-200801:50x64
Usbohci.sys6.0.6001.2219724,06406-Jun-200801:50x64
Usbport.sys6.0.6001.22197259,58406-Jun-200801:50x64
Usbuhci.sys6.0.6001.2219729,18406-Jun-200801:50x64
For all supported Itanium-based versions of Windows Server 2008
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Usbccgp.sys6.0.6001.22197208,38406-Jun-200801:41IA-64
Usbhub.sys6.0.6001.22197854,01606-Jun-200801:41IA-64
Hccoin.dll6.0.6001.2219722,52806-Jun-200803:33IA-64
Hcrstco.dll6.0.6001.2219724,57606-Jun-200803:33IA-64
Usbd.sys6.0.6001.2219711,64806-Jun-200801:41Not Applicable
Usbehci.sys6.0.6001.22197123,39206-Jun-200801:41IA-64
Usbohci.sys6.0.6001.2219758,36806-Jun-200801:41IA-64
Usbport.sys6.0.6001.22197645,63206-Jun-200801:41IA-64
Usbuhci.sys6.0.6001.2219780,38406-Jun-200801:41IA-64

Additional file information for Windows Server 2008

Additional files for all supported x86-based versions of Windows Server 2008 and Windows Vista
Collapse this tableExpand this table
File namePackage_1_for_kb954052~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size2,311
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_2_for_kb954052~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size2,478
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_3_for_kb954052~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size2,316
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_4_for_kb954052~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size2,316
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_client_1~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,367
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_client~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,431
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,421
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_sc~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,423
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_server_0~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,425
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_server~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,431
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_winpesrv_0~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,422
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_winpesrv~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,429
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File nameX86_usb.inf_31bf3856ad364e35_6.0.6001.22197_none_cb27b67b27d2a013.manifest
File versionNot Applicable
File size2,644
Date (UTC)06-Jun-2008
Time (UTC)17:38
PlatformNot Applicable
File nameX86_usbport.inf_31bf3856ad364e35_6.0.6001.22197_none_bdf1aef81cededfa.manifest
File versionNot Applicable
File size6,734
Date (UTC)06-Jun-2008
Time (UTC)17:38
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows Server 2008 and Windows Vista
Collapse this tableExpand this table
File nameAmd64_usb.inf_31bf3856ad364e35_6.0.6001.22197_none_274651fee0301149.manifest
File versionNot Applicable
File size2,646
Date (UTC)06-Jun-2008
Time (UTC)17:40
PlatformNot Applicable
File nameAmd64_usbport.inf_31bf3856ad364e35_6.0.6001.22197_none_1a104a7bd54b5f30.manifest
File versionNot Applicable
File size6,736
Date (UTC)06-Jun-2008
Time (UTC)17:40
PlatformNot Applicable
File namePackage_1_for_kb954052~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size2,325
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_2_for_kb954052~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size2,494
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_3_for_kb954052~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size2,330
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_4_for_kb954052~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size2,330
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,375
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_client~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,439
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_sc_0~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,429
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_sc~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,431
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,433
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_server~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,439
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_winpesrv_0~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,430
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_winpesrv~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,437
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
Additional files for all supported Itanium-based versions of Windows Server 2008
Collapse this tableExpand this table
File nameIa64_usb.inf_31bf3856ad364e35_6.0.6001.22197_none_cb295a7127d0a90f.manifest
File versionNot Applicable
File size2,645
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File nameIa64_usbport.inf_31bf3856ad364e35_6.0.6001.22197_none_bdf352ee1cebf6f6.manifest
File versionNot Applicable
File size6,735
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_1_for_kb954052~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size2,318
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_2_for_kb954052~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size2,323
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_3_for_kb954052~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size2,323
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_sc_0~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size1,425
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_sc~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size1,426
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_server_0~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size1,429
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_server~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size1,434
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_winpesrv_0~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size1,426
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable
File namePackage_for_kb954052_winpesrv~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size1,433
Date (UTC)06-Jun-2008
Time (UTC)17:36
PlatformNot Applicable

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Properties

Article ID: 954052 - Last Review: October 8, 2011 - Revision: 2.0
APPLIES TO
  • Windows Vista Starter
  • Windows Vista Ultimate
  • Windows Vista Home Premium
  • Windows Vista Home Basic
  • Windows Vista Enterprise
  • Windows Vista Business
  • Windows Vista Business 64-bit Edition
  • Windows Vista Ultimate 64-bit Edition
  • Windows Vista Home Premium 64-bit Edition
  • Windows Vista Home Basic 64-bit Edition
  • Windows Vista Enterprise 64-bit Edition
  • Windows Vista Service Pack 1
  • Windows Server 2008 Standard
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Datacenter without Hyper-V
  • Windows Server 2008 Enterprise without Hyper-V
  • Windows Server 2008 for Itanium-Based Systems
  • Windows Server 2008 Standard without Hyper-V
  • Windows Web Server 2008
Keywords: 
kbexpertiseinter kbautohotfix kbbug kbfix kbqfe KB954052

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