Dell Pro Wireless KM5221W User Manual page 20

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Troubleshooting
Problems
Keyboard/mouse is not
functioning
20 │ Troubleshooting
Possible solutions
1. Check if the batteries are inserted in the correct
orientation . The batteries "+" and "-" ends should
be placed as indicated on the battery compartment .
2. Check the battery level .
• If the device uses the rechargeable batteries,
ensure that the batteries are fully charged .
• If the batteries are exhausted, replace them with
a new ones .
3. Turn off the device, and then turn it on . Check if
the battery-status light is flashing amber 10 times,
indicating that the battery power is low . If the
batteries are fully depleted, the battery-status light
will not turn on .
4. Restart your computer .
5. Ensure that the USB receiver is directly connected
to your computer .
• Avoid using the port replicators, USB hubs, and
so on .
• Change the USB port .

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