Manual_
Page 38
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16.0 APPLICATION NOTE
1. USB 2.0 VGA LAN DOCK normally derives its own power from PC Host. When only the
Host power is supplied, the Power LED will turn RED, and the serial, parallel, keyboard,
mouse, Ethernet and 3 downstream ports can operate without the external power
adapter.
2. Please note that if the external power adaptor is not be used and heavy power con-
sumption USB device is connected, the 3 downstream ports may not function normally.
Therefore the used of external power adaptor is highly recommend. You may use the
external power by connecting an external 5 voltage, 2A DC power that is UL, CE, T-
mark or locally approved. For Polarity, see the following:
3. Unknown Device:
If the installation process is completed and some of the devices still don't work, please
click on Start, Settings, Control Panel, double-click System, and Device Manager. Check
“Human Interface Devices”, “Keyboard”, “Mouse”, “Network adapters”, “Ports”, and
“Universal serial bus controller” on the dialog box and see if “Unknown device” appe-
ars on the screen. You need to right-click the “Unknown device” and choose Remove to
remove it. Then choose Refresh to re-detect the device. (You might need to install the
device driver once again so please follow the same installation procedures as section
9.0). After trying the above procedures and your device still cannot work, please con-
tact the technical support at your local distributor.
Disclaimer
Information in this document is subject to change without notice. The manufacturer does
not make any representations or warranties (implied or otherwise) regarding the accuracy
and completeness of this document and shall in no event be liable for any loss of profit or
any other commercial damage, including but not limited to special, incidental, consequen-
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