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<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE topic PUBLIC "-//OASIS//DTD DITA Topic//EN" "topic.dtd">
<topic xml:lang="en-us" id="ts_win7-guest-usb3-support">
<title>No USB 3.0 Support in Windows 7 Guests</title>
<body>
<p>
If a Windows 7 or Windows Server 2008 R2 guest is configured for
USB 3.0 (xHCI) support, the guest OS will not have any USB
support at all. This happens because Windows 7 predates USB 3.0
and therefore does not ship with any xHCI drivers. Microsoft
also does not offer any vendor-provided xHCI drivers through
Windows Update.
</p>
<p>
To solve this problem, it is necessary to download and install
the Intel xHCI driver in the guest. Intel offers the driver as
the USB 3.0 eXtensible Host Controller (xHCI) driver for Intel 7
Series/C216 chipsets.
</p>
<p>
Note that the driver only supports Windows 7 and Windows Server
2008 R2. The driver package includes support for both 32-bit and
64-bit OS variants.
</p>
</body>
</topic>
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