If your N600 Touch Lapdesk isn't working, the problem is likely a lost connection. The connection between the N600 and the USB receiver can be lost for several reasons, such as:
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Low batteries
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Moving the USB receiver from one port to another
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Moving the USB receiver to another computer
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Plugging the USB receiver into a hub or other unsupported device such as a KVM switch (NOTE: Your Unifying USB receiver must be plugged directly into your computer.)
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Radio frequency (RF) interference from more powerful devices, such as:
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Wireless speakers
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Computer power supplies
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Monitors
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Cell phones
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Garage door openers
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Before connecting your N600:
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Fix or rule out the potential problems listed above.
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Turn your computer on.
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Insert new batteries in your N600. For instructions on changing the batteries, see Knowledge Base article 360023239614.
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Turn on your N600 by pulling out the touchpad. The power indicator on top should be green.
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If the power indicator is not lit, slide the power switch on the touchpad to the right or "ON" position. The power indicator should now turn green.
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Plug the USB receiver directly and securely into a working USB port on your computer.
Re-connecting your N600:
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Download the correct version of Logitech SetPoint Mouse and Keyboard Software from the N600 Downloads Page.
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Launch the Logitech Unifying Software:
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Windows: Start > Programs > Logitech > Unifying > Logitech Unifying Software
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Click Next at the bottom of the Welcome screen.
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Follow the on-screen instructions to turn your N600 off and then back on.
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When your N600 is detected, you'll see the confirmation message shown below. Click Yes and then Next.
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Click Finish to exit the Logitech Unifying Software. Your N600 should now be connected.
If your N600 frequently stops working and you keep having to reconnect it with the USB receiver, try these suggestions:
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Keep other electrical devices at least 8 inches (20 cm) away from the USB receiver
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Move the N600 closer to the USB receiver
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Move the receiver to a different USB port on your computer
Contact information
Need help? See Knowledge Base article 24809 for how to contact Customer Care about this product.