If no rule is specified, then the device is handled as Interactive mode (02). If the device is allowed, the host then checks the Client USB device optimization rules for the device. When a user plugs in a USB input device, the host checks if the device is allowed by the USB policy settings. In XenApp and XenDesktop 7.6 FP3, the Client USB device optimization rules can be applied to devices to disable generic usb optimization for interrupt devices, or to change the optimization mode. HKLM\SOFTWARE\Wow6432Node\Citrix\PortICA\GenericUSB\DeviceRules for 64-bit OSĬreating Client USB device optimization rules HKLM\SOFTWARE\Citrix\PortICA\GenericUSB\DeviceRules for 32-bit OS You can find the default rules in the following registry in virtual desktop:Ĭaution! Refer to the Disclaimer at the end of this article before using Registry Editor. Open Desktop Studio on XenDesktop server and click Start > All Programs > Citrix > Desktop Studio.Ĭlick Add on Client USB device redirection rules. If the first match is a Deny rule, the matched device is only available in the local desktop. If the first match is an Allow rule, the matched device is allowed to be redirected to the virtual desktop. The first match for any devices is considered final. When the user tries to redirect USB device to Virtual Desktop, it is checked against each USB policy rules in turn until a match is found. In the Policy console, scroll down to USB Devices.Ĭlick Add on Client USB device redirection. Open Desktop Studio on XenDesktop server, click Start > All Programs > Citrix > Desktop Studio. To use it, USB redirection policy and specific redirection rules must be enabled and configured. Generic USB Redirection Configurationīy default, USB redirection configuration is not enabled. It avoids the requirement for compatible device drivers on the client machine and the driver is expected to be supported on the virtual desktop only. Generic USB redirection works at a low level and redirect USB request and response message between client machines and XenDesktop virtual desktop. With this feature, the end users have the ability to interact with a wide selection of generic USB devices in their XenDesktop session as if it had been physical plugged into it. Generic USB redirection feature allows redirection of arbitrary USB devices from client machines to XenDesktop virtual desktops. So, if I'm right, you just need to have right type of data to get 24-bit. In addition, Windows Me and Windows XP support USB MIDI but do not support USB MIDI Elements. In Windows Me, and Windows XP and later, USBAudio supports all the features that are supported in Windows 98 SE and Windows 2000. In Windows 98 Second Edition (SE), Windows Me, and Windows 2000 and later, USBAudio supports all the same features as Windows 98, with one exception: USBAudio supports WAVEFORMATEXTENSIBLE but does not support packed WAVE_FORMAT_PCM for 24-bit data. * WAVEFORMATEXTENSIBLE wave format (USBAudio uses packed WAVE_FORMAT_PCM for 24-bit data instead.) However, USBAudio in Windows 98 does not support: * Synchronization types synchronous and adaptive * All Type I formats (except 8-bit signed PCM) In Windows 98, the USBAudio driver supports the following features: Microsoft recommends that hardware vendors use the USBAudio driver for their USB Audio devices instead of writing proprietary adapter drivers. This means that a device that complies with the USB audio specifications requires no proprietary adapter driver. USBAudio drives the device directly, without the aid of a proprietary adapter driver. When an audio device identifies itself as USB Audio-compliant during Plug and Play device enumeration, the system automatically loads the USBAudio driver to drive the device. Support for MIDI devices was added in Windows Me. The USBAudio driver for Windows 98 introduced support for USB devices such as speakers and microphones. The USBAudio driver supports a subset of the features that are described in the USB Audio specification. This specification is available at the USB Implementers Forum Web site. The USBAudio class system driver (Usbaudio.sys) is an AVStream minidriver that provides driver support for USB Audio devices that comply with the Universal Serial Bus Device Class Definition for Audio Devices (release 1.0).
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