Guntermann & Drunck USB 2.0 Extender EL 4500 - Manual (Page 12)

There is no
audio. • The USB CMEDIA PNP Audio
device is not selected as the
default audio device.
1. Check that the CMEDIA device is enumerated on
the host computer.
2. If the CMEDIA device is enumerated as an
unknown device, there is most likely a driver
conflict.
a. Uninstall all USB audio device drives (e.g. sound
card and webcam).
3. If the CMEDIA device is not enumerated contact
Technical Support.
4. If the CMEDIA device is enumerated do the
following.
a. In Windows: Go to the Control Panel, select
Sound or Sound and Audio Devices, Select USB
Audio Devices, set USB Audio Devices as default
playback.
b. In Mac OS X: Go to System Settings, select
Sound, select USB PNP device, set USB PNP
devices as default.
c. In Linux Ubuntu: Go to System, Preferences, and
select Sound. To set up the microphone, click
on the ‘Input’ tab and select “USB_PnP Sound
Device Analog Mono". To setup Stereo-Out,
click on the “Output" tab and select “USB_PnP_
Sound_Device Analog Stereo".
Video and/
or USB
performance is
not ideal • There is high amounts of
network traffic.
1. Reduce the number of KVM extenders using the
network or reduce the network traffic.
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