How to Convert Existing Multiple-Video-Card Userful Desktop™ Hardware to USB MultiSeat

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Introduction

Userful Desktop X1000, X3000 or X5000 PC hardware that uses multiple video cards for multiple stations can be upgraded to use USB multiseat devices. This document describes the process for upgrading to USB multiseat hardware.

Materials Needed

The following hardware should be assembled for each PC to be upgraded:

  • For the two stations based on the PCIe card:
    • 2 USB audio hubs 2 sets of USB keyboards/mice
  • For the remaining stations that will be USB multiseat:
    • up to 8 DisplayLink®-based USB multiseat devices
    • up to 8 sets of mice/keyboards with either USB or PS/2 connections (depending on what the USB multiseat device supports)
  • If planning to use more than 6 stations, total (including the 2 stations using the PCIe card):
    • 4-port usb adapter bracket (the type that connects to the motherboard through USB ports, NOT a USB-PCI card)

Please Note: If you are simply replacing video-card stations 1:1, your system should perform as usual -- but if you are increasing the number of stations when you upgrade, you may experience system lags.

Just like video-card based multiseat, USB multiseat uses system resources. A higher number of seats will use more system resources than a lower number, and may result in noticeable system slowdowns. Please contact Userful Customer Support for further information and advice.

Upgrade Procedure

Remove additional video cards.

Step 1: Remove all PCI cards except for the PCIe card. We recommend keeping two stations connected to the PCIe card, but be sure that at least one station is connected to the PCIe video card in order to see startup messages.

Step 2: Use a single model of USB multiseat devices to connect all your stations.

USB Multiseat station setup.

Step 3: Position one monitor for each station required and group each with a keyboard and mouse.

Step 4: Connect one monitor, one mouse and one keyboard to each USB multiseat station. Connect the USB multiseat station to the host PC. No reboot is necessary. After a brief pause all licensed stations will be ready to use.

Step 5: Ensure all devices, hubs and monitors are connected to a UPS or surge protected outlets, if necessary.

General USB Guidelines

  • USB multiseat devices only work with USB 2.0 ports
  • Do not daisy chain USB hubs or USB multiseat devices
  • Use a maximum of 5 hubs ("hops") per USB port.
  • If extension cables are used, ensure the distance between the USB device and the computer/powered USB hub is not greater than 5 m (15 ft). Using a single hub at 5 m (15 ft) can extend the maximum cable length to 10m (30ft).
  • Only use high-quality USB 2.0 compliant cables:
    • Labeled “High-Speed Certified”
    • Specified 24 AWG (power) and 28 AWG (signal)