

Step 4: Connect your keyboard to another computer to see if it works. Restart your computer and connect the keyboard to your computer again.Press the Reset or Connect button on your keyboard.Press the Reset or Connect button on the unifying receiver if it has one.If your Logitech K520 keyboard often loses connection or not responding to the key you press, you can follow the instructions below to reset your keyboard: Step 3: Reset your Logitech K520 keyboard. Logitech Setpoint 4.If your keyboard is running out of battery, it may not function properly. Logitech Setpoint 4.80 for WinXP/Vista 64-bit Logitech Connection Utility 2.00.35 for Windows XP/Vista/7 Logitech Gaming Software 5.06 for Windows XP/Vista 32-bit Logitech Flow Scroll Version 4.00.33 for Windows 7 Logitech Gaming Software 7.00.291 for Windows XP/Vista/7 64-bit Other problems, please try to contact publisher's official support. If you have found mistakes during downloading, please email to We will endeavour to solve these as soon as possible.

If we have helped you with search of your drivers, you can help us, having put the link to us, from your site or to recommend our site to the friends. Try moving the mouse closer to the receiver.NOTE: Do not use a USB hub or KVM switch, and always plug the receiver directly into your computer. Try using a different USB port for the receiver.Verify the battery power level and replace the batteries if needed.Follow the on-screen instructions to reconnect your mouse.Click Download link and save to your preferred location.Logitech Connection Utility 2.00 for Windows Vista 32-bit, Windows Vista 64-bit, Windows 7 32-bit, Windows 7 64-bit, Windows 8 32-bit, Windows 8 64-bit: Logitech_ConnectUtility2.00.3.exe.To start downloading Logitech Connection Utility 2.00 for Windows Vista/7/8 x86/圆4, please choose one of the links from the list below.
