SigmaTel USB-IR Adapter FAQ
How Can I Get the USB-IR Adapter to Work With My Hub?
The SigmaTel USB-IR Adapter must be plugged into a self-powered hub. What this means is that the USB-
IR Adapter will work fine when plugged directly into the back of your computer, or when plugged into a hub with
an external power supply attached. However, if you attempt to plug the USB-IR Adapter into a hub that has no
power supply, Windows will display an error message. To resolve this issue, either connect a power supply to
the hub, or connect the USB-IR Adapter to a USB port that is powered, such as the ports directly on your
computer.
General Issues for Windows XP
Windows XP includes a version of the SigmaTel USB-IR Adapter driver. However, this version is not the
latest driver version. If you are having difficulties with an application under Windows XP and you are using the
default included driver, please download the SigmaTel Installer to update your driver to the latest version.
If you are using a STIR4115 with Windows XP, you will need to upgrade to the latest SigmaTel driver. The
driver included with Windows XP will incorrectly identify the STIR4115 and will not function.
General Issues for Windows 2000
General Issues for Windows Me
See the description of Virtual COM and LPT Ports under WinMe as described here.
General Issues for Windows 98
When removing the USB-IR Adapter from a Win98 system, it is best to use the following procedure to avoid
instability and failures:
1. Disable IR in the Infrared Monitor. Do this by clicking on the Infrared Icon in the Taskbar, and
unchecking the box that says “Enable Infrared”.
2. Remove the USB-IR Adapter from the system.
3. If you would like to re-attach the USB-IR Adapter, insert it in the USB jack, then re-renable Infrared.
General Issues for Windows NT
Windows NT does not support USB or IrDA. Because of this, SigmaTel cannot provide drivers for Windows
NT.
General Issues for the Mac OS
SigmaTel does not provide Mac drivers or support at this time.
7/24/02
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