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Have there been any firmware updates released for EXT-DVI-422DL?
Thank you for your inquiry. According to our Gefen contact, there are no firmware updates available or planned for this unit.
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Audio is not coming to the output ?
Thank you for your inquiry. Unfortunately, due to the complex and varied nature of user environments, detailed product support is beyond the scope of this simple FAQ.

That being said a couple things to try would be to ensure that all cables are fully seated and receiving the need power. Also, ensure the audio cables and equipment work without the switcher by attaching the components directly to a device to see if they work. It may also be helpful to ensure the switcher and attached devices support the correct audio formats.

One potential source for troubleshooting / support help would be the manufacture\'s forum located here: http://forum.gefen.com/default.asp.
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How do i rebbot the unit, Because audio inputs and outsputs are not working?
Thank you for your inquiry. Unfortunately, we could not locate a reboot procedure in the manual: http://www.gefen.com/pdf/EXT-DVI-422DL.pdf.

Our best guess would be to power down, unhook the systems, let the unit rest for a few minutes, then follow the steps to reconnect the unit.
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