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Access USB devices in Citrix XenDesktop and VDI-in-a-box

Olga Weis Olga Weis Dec 16, 2019

Virtualization software solutions such as Citrix, VMWare centralizes desktops in your company’s datacenter and delivers them to users on demand. This technology offers a lot of advantages - secure remote access, possibility to use any device available to a user, cost minimization, etc. However it has certain drawbacks too, one of them is having no access to USB ports on the host computer. Thus in virtual desktop infrastructure (VDI) you might not be able to read the contents of a USB dongle or send a document for a printout to a multi functional device even though they are connected to your machine. Or as the virtualization software developers say, some devices are not designed to work in virtual environments. These could be web-cams and security USB devices. There are also devices whose drivers contain internal timeouts. But do not worry – there is a way to go about it, or in fact several ways:

Special tool to work with USB devices in Citrix Virtual Environments

Till recently Citrix had no proper mechanism to work with USB devices, the virtualization software usually does not allow you to use the functionality or access the contents of the devices connected to the host machine. Only the latest versions of XenDesktop allow you to do it, however for the owners of the previous versions accessing USB ports is still a problem. There is no need to worry though, there is special software that helps you solve the problem.

USB over Ethernet Connector allows you to get through to the USB ports and devices that use them for communicating with the computer.

USB Network Gate logo

USB Network Gate

Share USB over Ethernet on Windows
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USB Network Gate
USB Network Gate

Here is how you use it:

  1. Download USB Network Gate on a machine to which you will connect a USB device, a server, for example. Install it on the host OS, plug in the device and share it.
  2. Install USB Network Gate on the virtual machine.
  3. Search for the device and connect to it. It will be displayed on your virtual machine as if you plugged it directly in your machine.

That’s it! The functionality and contents of any USB device connected to the host machine or a server is accessible to you. USB Network gate also enables working with a USB device in VDI-in-a-box over ICA protocol. Your virtual environment will display a USB device as if it were plugged into the virtual machine. Please note that although in general, USB redirection works but the performance vary depending on devices, it might be slower than usual.

USB device redirection in XenDesktop

In a remote session we often need to access USB devices connected to the host machine. Citrix does not support generic redirection of devices connected to USB 3.0 ports. Instead it builds virtual channels that optimize the devices’ performance and make them available in the session such as CDM virtual channel used to view files on a camera or to provide audio to a headset. XenDesktop allows USB redirection over ICA protocol in remote sessions and you can use it to access USB devices in VIAB environment too, i.e. you can redirect a USB device over ICA from a client machine to XenDesktop or VDI-in-a-box virtual desktop.

USB redirection over Independent Computing Architecture (ICA) protocol works at a low level. Only the virtual desktop needs to have a driver compatible to the device, not the client machine.

To start using the citrix xenserver usb software you need to enable the feature and configure redirection rules. When you try to redirect a device to Virtual Desktop, the desktop start searching for a match in each of the USB policy rules. There is a way to go about it:

  1. On XenDesktop server launch Desktop Studio, choose Start > All Programs > Citrix > Desktop Studio.
  2. Locate and expand ‘HDX Policy’ option
  3. Select users
  4. Choose Edit > Settings
  5. In ‘Policy’ console find ‘USB devices’, you might have to scroll down. On ‘Client USB device redirection’ click ‘Add’, choose ‘Allowed’ and click ‘OK’.
USB Network Gate

Hardware USB device server for Virtual Environment

Apart from software solutions, there is hardware that allows you to access USB devices in Citrix virtual environment. These are USB device servers that can connect to any USB device and allow you to place the device wherever it is convenient for you in the network – no cable clutter, no distance restriction. All these servers are equipped with the functionality that allows users to access USB devices in the network.

Here we will list a few of such servers:

  • DS-510: a device server for entry-level users. No special drivers or applications are required to use the equipment. Thanks to optimized performance and Gigabit connection allows for high performance data throughput.
  • USB Network Gate
  • SX-DS-4000U2: high-end USB device server. USB virtual link technology enables sharing any kind of USB device and transmitting data at a high speed.
  • USB Network Gate
  • SX-DS-3000WN (replaces C-6700WG): works over 802.11n wireless or Gigabit Ethernet.
  • USB Network Gate

USB Network Gate

Run on 32-bit and 64-bit: Windows 7/8/10, Windows Server 2008 R2/2012/2016/2019/2022
Also available on macOS, Linux OS and Android , 9.33MB size
Version 10.0.2593 (1 Nov, 2023) Release notes
Category: CommunicationApplication