Logitech K780 Multi-Device Wireless Keyboard Instruction Manual

Introduction and Overview

The Logitech K780 is a full-size, multi-device wireless keyboard designed for seamless switching between computers, tablets, and smartphones. It offers comfortable typing with quiet keys and an integrated stand for your devices.

Key Features:

• Multi-Device Connectivity: Easily switch between up to three connected devices (computer, tablet, smartphone) with dedicated Easy-Switch buttons.
• Integrated Device Stand: A built-in rubber cradle securely holds your phone or tablet at an optimal typing angle.
• Comfortable Typing Experience: Features large, quiet, and concave keys for a familiar and comfortable typing feel, along with a convenient number pad.
• OS Adaptive Layout: Automatically recognizes the connected device's operating system (Windows, Mac, iOS, Android, Chrome OS) and maps keys to provide a familiar layout with appropriate hotkeys and shortcuts.
• Long Battery Life: Enjoy extended usage with up to two years of battery life on two AAA batteries (user experience may vary).
• Logitech FLOW Compatibility: Can be combined with a compatible Logitech FLOW mouse (sold separately) for seamless cross-computer typing, copying, pasting, and file transfer.

Setup

1. Battery Installation

The Logitech K780 keyboard requires two AAA batteries. To install or replace batteries:

1. Locate the battery compartment cover on the underside of the keyboard.
2. Slide the cover open.
3. Insert two AAA batteries, ensuring correct polarity (+/-).
4. Close the battery compartment cover securely.

Image: The underside of the Logitech K780 keyboard, revealing the battery compartment and the storage slot for the USB Unifying Receiver. Two AAA batteries are visible inside the compartment.

2. Connecting to Devices

The K780 keyboard supports connection via Bluetooth or the Logitech Unifying Receiver.

Using the Logitech Unifying Receiver:

1. Locate the Unifying Receiver in the battery compartment of the keyboard.
2. Plug the Unifying Receiver into a USB port on your computer.
3. Turn on the keyboard using the power switch on the side.
4. Press and hold one of the Easy-Switch buttons (1, 2, or 3) for 3 seconds until the LED light on the button starts blinking rapidly.
5. The keyboard should now be paired with your computer via the Unifying Receiver.

Image: The Logitech K780 keyboard shown from an angled perspective, highlighting the integrated stand holding a smartphone and a tablet simultaneously. The Easy-Switch buttons are visible on the top left.

Using Bluetooth:

1. Turn on the keyboard using the power switch on the side.
2. Press and hold one of the Easy-Switch buttons (1, 2, or 3) for 3 seconds until the LED light on the button starts blinking rapidly.
3. On your device (computer, tablet, or smartphone), go to Bluetooth settings and enable Bluetooth.
4. Look for "Keyboard K780" in the list of available devices and select it to pair.
5. Follow any on-screen prompts to complete the pairing process. The LED light on the Easy-Switch button will turn solid for 5 seconds, then turn off, indicating successful pairing.

Operating Instructions

1. Switching Between Devices

The K780 keyboard allows you to connect and switch between up to three devices. Once paired, simply press the corresponding Easy-Switch button (1, 2, or 3) to instantly switch typing between your devices.

2. Using the Integrated Stand

The integrated rubber cradle at the top of the keyboard is designed to hold your smartphone or tablet at an ideal viewing angle while you type. It can accommodate devices up to 11.3 mm (0.44 inches) thick.

Image: A top-down view of the Logitech K780 Multi-Device Wireless Keyboard, showcasing its full layout with circular keys and the integrated stand at the top.

3. OS Adaptive Features

The K780 automatically detects the operating system of the connected device (Windows, Mac, iOS, Android, Chrome OS) and adapts the key functions and shortcuts accordingly. This ensures a familiar typing experience regardless of the device you are using.

4. Function Keys and Hotkeys

The top row of keys includes various function keys (F1-F12) and media controls. These keys perform different actions depending on your operating system. For specific functions, refer to your device's operating system documentation.

Maintenance

1. Battery Replacement

When the battery indicator light on the keyboard turns red, it's time to replace the two AAA batteries. Follow the steps in the "Battery Installation" section under Setup.

2. Cleaning

To clean your keyboard, use a soft, lint-free cloth. For stubborn dirt, slightly dampen the cloth with water or a mild cleaning solution. Avoid using abrasive cleaners or solvents.

Troubleshooting

If you encounter issues with your Logitech K780 keyboard, try the following:

• Keyboard not connecting: Ensure the keyboard is turned on and the batteries are correctly installed. For Bluetooth, make sure Bluetooth is enabled on your device and the keyboard is in pairing mode (blinking LED on Easy-Switch button). For the Unifying Receiver, ensure it's securely plugged into a USB port.
• Lag or dropped connection: Move the keyboard closer to your device or Unifying Receiver. Avoid placing the keyboard near other wireless devices that might cause interference.
• Keys not responding: Check battery levels. If the issue persists, try re-pairing the keyboard with your device.
• Incorrect key layout: Ensure the keyboard has correctly identified your device's operating system. If not, manually switch the OS mode using the appropriate key combination (e.g., Fn + O for Mac, Fn + P for Windows).

Specifications

What's in the Box

• Logitech K780 Multi-Device Wireless Keyboard
• USB Unifying Receiver
• 2 AAA Batteries (pre-installed or included)
• User Documentation (this manual)

Warranty and Support

For warranty information and technical support, please refer to the official Logitech website or the documentation included with your product. You can also visit the Logitech support page for FAQs and troubleshooting guides.