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If your keyboard isn't working, the problem is likely a lost connection. The connection between
the K750 keyboard for Mac and the USB receiver can be lost for several reasons, such as:
 Low battery levels
 Moving the USB receiver from one USB port to another 2
 Moving the USB receiver to another computer 3
 Plugging the USB receiver into a USB hub or other unsupported device such as a KVM
switch (NOTE: Your USB receiver must be plugged directly into your computer.)
 Using your wireless keyboard on metal surfaces
 Radio frequency (RF) interference from other wireless devices, such as:
o Wireless speakers
o Computer power supplies
o Monitors
o Cell phones
o Garage door openers
Try to rule out these and other possible problems sources that might be affecting your keyboard.
Keyboard frequently stops working
If your keyboard frequently stops working and you keep having to reconnect it with the USB
receiver, try these suggestions:
 Keep other electrical devices at least 8 inches (20 cm) away from the USB receiver
 Move the keyboard closer to the USB receiver
 Move the receiver to a different USB port on your computer
Before reconnecting your keyboard
Before you try to connect your K750 keyboard for Mac with the Unifying receiver again:
1. Check the battery level by powering it off and then back on using the ON/OFF switch in
the upper right.
To the left of the power switch, a LED indicator light will flash. If you see a: