Method 1: Download and update the driver manually
Download and update the driver automaticall. Download and update the driver manually. You can download and update the driver easily with one of the methods below. Try reconnecting the keyboard and Unifying receiver using the Logitech Unifying software (Refer to the Unifying section in this guide.If you’d like to update drivers for your Logitech wireless keyboard, don’t worry. Try moving the Unifying receiver to a USB port closer to the keyboard. Remove metallic objects between the keyboard and its Unifying receiver. 
Did you pull the battery tab? Check the orientation of the batteries inside the keyboard, or replace the two AA alkaline batteries. If the Unifying receiver is plugged into a USB hub, try plugging it directly into a USB port on your computer. Is the Unifying receiver securely plugged into a computer USB port? Try changing USB ports. *Go to Start / All Programs / Logitech / Unifying / Logitech Unifying Software If you haven’t already, download the Logitech® Unifying software from Start the Unifying software* and follow the onscreen instructions to pair the new wireless device with your existing Unifying receiver. Make sure your Unifying receiver is plugged in. If you’re ready to pair your device(s) via Unifying, here’s what you need to do: It’s easy, and you’ll use only one USB port for up to six devices. Just look for the orange Unifying logo on the new device or its packaging. If you have a Logitech wireless device that’s Unifying-ready, you can pair it with additional Unifying devices. Did you know you can add a compatible Logitech wireless device that uses the same receiver as your current Logitech Unifying product? Your new Logitech product ships with a Logitech Unifying receiver. To adjust your touchpad experience, download and install software from The software allows you to modify the speed of the on-screen pointer, adjust scrolling, and disable the touchpad tap. To re-enable touchpad tap, press the Fn-key plus the left mouse button again. To disable touchpad tap, press the Fn-key plus the left mouse button. *You can also tap the touchpad surface to perform a click. Point and slide one finger anywhere on the touchpad to move the screen pointer.
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