Menu path: Setup > Sessions > Horizon Client > Horizon Client Global > USB Redirection

In this area, you can enable and configure USB redirection for specific devices. From IGEL Linux 5.12.100, a USB composite device can be split into its components (interfaces). Example: USB dictation device that is split into the components loudspeaker, microphone, storage device/drive and control buttons.

Ensure that the power supplied by the USB connection is adequate for the device.

If USB redirection is enabled, drive mapping should be disabled; see Drive mapping. Otherwise, USB redirection can cause a storage device to be removed from the drive mapping. This is the case if the Connect automatically upon insertion option is enabled.

You can change the following settings:

  • Enable USB redirection
    • On
    • Off
  • Connect automatically at startup

    USB devices that were inserted before the start of the session are available in the session. (default)

  • Connect automatically when inserted

    USB devices that are inserted during the session are available in the session. (default)

  • Default rule: This rule will apply if no special rule was configured for a class or a device.
    • Allow
    • Prohibit
  • Automatic splitting of USB composite devices

    A USB composite device will automatically be split into its individual components (interfaces). The class rules will be applied to these individual devices.

    The device will not be split into its components.


Enabling USB redirection:
  1. Enable the option Enable USB Redirection.
  2. Select a Default rule. The default rule defines if the USB redirection is allowed or prohibited in principle.
  3. Create one or more rules for classes of devices or single devices.

Creating a class rule:
  1. To create a new rule, click in the Class Rules area.
  2. Choose a rule. The rule specifies whether use of the device class defined here is allowed or prohibited.
  3. Under Class, select the class of device for which the rule should apply. Examples: Audio, Printer, Mass Storage, Storage Devices.
  4. Under Name, give a name for the rule.
  5. Click on Next.
  6. Click on Apply or OK.
    The rule is active.

To create a device rule, proceed as follows:
When a rule is defined, at least one of the properties Vendor ID or Product ID must be given.
  1. To create a new rule, click in the Device Rules area.
  2. Choose a rule. The following rules are available:
    • Deny: The device will not be redirected via USB redirection.
    • Allow: The device will be redirected via USB redirection.
    • Split: A USB composite device will automatically be split into its individual components (interfaces).
    • Do not split: A USB composite device will not be split.
  3. Give the Vendor ID of the device as a hexadecimal value.
  4. Give the Product ID of the device as a hexadecimal value.
  5. Only for USB composite devices: Under Interface Exclue List, enter a list of interfaces which are to be excluded from USB redirection. The individual interfaces can be separated by commas or spaces.
  6. Under Name, give a name for the rule.
  7. Click on Next.
  8. Click on Apply or OK.
    The rule is active.