- Connect.
- Step 1: Insert the Unifying receiver into a USB port on your computer.
- Step 2: Pull to remove the yellow battery tab.
- Logitech Options. K400 Plus is a plug and play keyboard loaded with features right out of the box.
- Logitech Unifying wireless technology.
- Replace batteries.
- Customer Support.
To reset your keyboard, press the Connect or Reset button on the top of the USB receiver if it has one. Next, press the Connect or Reset button on the bottom of your keyboard. You may need to restart your computer if you're still having issues getting your keyboard to connect after resetting it.
How to Install Logitech Wireless Keyboards
- Turn off your computer.
- Insert the Unifying receiver into an available USB port on your laptop.
- Turn on your computer.
- Remove the battery cover on the back of the keyboard and remove the yellow insert tag.
- Slide the power switch on the keyboard to turn it on.
- Install the Logitech SetPoint software.
How to unlock and lock function key on laptop
- Turn on the computer.
- Press the F10 key to enter the BIOS setup window.
- Use the arrow keys to navigate to the System Configuration option.
- Enter the Action Keys Mode option, and then press the enter key to display the Enable / Disable menu.
- Select Disabled, press f10 key to save the selection and reboot.
The F Lock key, above the Backspace key. Microsoft introduced a F Lock key. It functions as a toggle. When it is off, the keys F1 to F12 have the following purposes.
The function keys or F keys are lined along the top of the keyboard and labeled F1 through F12. These keys act as shortcuts, performing certain functions, like saving files, printing data, or refreshing a page. For example, the F1 key is often used as the default help key in many programs.
To disable it, we'd hold Fn and press Esc again. It functions as a toggle just like Caps Lock does. Some keyboards may use other combinations for Fn Lock. For example, on Microsoft's Surface keyboards, you can toggle Fn Lock by holding the Fn Key and pressing Caps Lock.
Slide the switch to turn on the device (green coloring becomes visible). Earlier Apple Wireless Keyboard models have a power button on the right side of the device. Press the button and you see a green LED on the top of the device, near the button.
There is usually a Connect button somewhere on the USB receiver. Press that, and a light on the receiver should start flashing. Then press the Connect button on the keyboard and/or mouse and the flashing light on the USB receiver should stop. Your receiver is now synced with the keyboard and/or mouse.
Steps
- Plug in the keyboard's receiver. The receiver should fit into one of your computer's USB ports, which are the thin, rectangular slots found on the sides of laptops and on the front of desktops' CPUs.
- Turn on your keyboard.
- Press your keyboard's "Connect" button.
- Try opening Word or Notepad and typing.
To add a new keyboard layout on Windows 10, use these steps:
- Open Settings.
- Click on Time & Language.
- Click on Language.
- Select your default language from the list.
- Click the Options button.
- Under the "Keyboards" section, click the Add a keyboard button.
- Select the new keyboard layout that you want to add.
To program a hot key:
- Launch the Logitech SetPoint mouse and keyboard software.
- Click the My Keyboard tab at the top of the SetPoint Settings window.
- Select your keyboard from the product drop-down menu at the top left.
- Click the lightning bolt icon on the left toolbar to display the Hot Key Settings screen.
Like many recent Logitech accessories, the K400 Plus ditches Bluetooth connectivity in favor of a small, proprietary 2.4GHz Unifying receiver that must be plugged into the computer you want to control. (Logitech says non-rechargeable batteries are good for up to 18 months of use.)
Plug the wireless receiver into USB port 2 on the back of the TV. Turn the TV on and allow to power up. Press and hold the CONNECT button on the backside of the keyboard for 3 seconds or more to connect to the TV.
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:
- Press the Reset or Connect button on the unifying receiver if it has one.
- Press the Reset or Connect button on your keyboard.
