Logitech Unifying receivers let compatible Logitech wireless keyboards and mice share one small USB receiver. This can free up USB ports and make a desktop or travel setup easier to manage. Before pairing, confirm that both the keyboard and receiver use the Unifying system. Logitech devices designed for Bluetooth or Logitech Bolt cannot be paired with a Unifying receiver.
Before you begin
Gather the keyboard, the Unifying receiver, and the computer you want to use. Then complete these checks:
- Look for the orange star symbol on the receiver or in the keyboard’s documentation.
- Make sure the keyboard has charged batteries or sufficient power.
- Plug the receiver directly into a USB port on the computer if possible.
- Install the Logitech Unifying Software or the compatible Logitech Options application available for your device.
- Move the keyboard reasonably close to the receiver during setup.
If the keyboard was supplied with a receiver, that receiver may already be paired. A keyboard can also be paired with another compatible Unifying receiver, provided the pairing software detects both devices.
How to pair the keyboard with the receiver
- Insert the Logitech Unifying receiver into a USB port. Avoid using a hub during the initial setup so that the receiver has a direct connection.
- Open Logitech Unifying Software or the Logitech application recommended for your keyboard.
- Select the option to add, pair, or connect a new device. The wording can vary between applications.
- Turn on the keyboard. If it has a connect or pairing button, press it as instructed by the device documentation.
- Follow the on-screen prompts while the software searches for the keyboard.
- When the keyboard is detected, complete the confirmation step. You may be asked to type a short message to verify that the connection works.
Open a text field and test several keys after pairing. If typing works normally, the keyboard is ready to use with that receiver.
Adding more Logitech devices
A Unifying receiver can support up to six compatible Logitech devices. To add another keyboard or a compatible mouse, leave the receiver connected, reopen the pairing software, and choose the option to add another device. Put the additional device into pairing mode and confirm it when the software finds it.
Each keyboard or mouse is managed as a separate device in the software, even though all of them communicate through the same receiver. This is useful when you want one receiver for a keyboard-and-mouse combination or when a computer has only a small number of available USB ports.
Keep track of which peripherals are paired with each receiver. Moving a receiver to another computer does not automatically pair every nearby Logitech device; the devices remain associated with that receiver until they are changed or paired again.
What to do if the keyboard will not pair
Pairing problems are often caused by compatibility, power, or software issues. Work through these checks:
- Confirm the wireless protocol. A Bolt receiver, Bluetooth keyboard, and Unifying keyboard are not interchangeable. Check the product documentation and receiver markings.
- Check power. Replace the batteries or charge the keyboard, then turn it off and on again.
- Use the correct application. Older Unifying devices may require Unifying Software, while some supported devices are managed through Logitech Options or a related Logitech application.
- Reduce interference. Move the keyboard closer to the receiver and temporarily separate the receiver from other wireless dongles, metal objects, or crowded USB ports.
- Try a different USB port. A direct port on the computer is preferable to a hub while troubleshooting.
- Restart the pairing process. Close and reopen the software, then begin the add-device procedure again.
- Test another computer if available. This can help identify whether the problem is with the keyboard, receiver, software, or original computer.
If the keyboard previously worked but has stopped responding, remove or disconnect its existing entry in the pairing application when that option is available, then repeat the setup process. A damaged receiver or restrictions on USB devices and driver installation can also prevent pairing. On a managed work computer, administrator policies may need to be checked.
Replacing a lost receiver
If the original receiver is missing, a compatible Unifying receiver may be usable with the keyboard, but the keyboard must be paired to it through Logitech’s pairing software. This does not apply to keyboards made for Bolt or Bluetooth. Labeling receivers and keeping the keyboard’s model information can make future reconfiguration easier.
In most cases, successful pairing comes down to three things: matching the keyboard to the correct Logitech wireless system, using the appropriate software, and ensuring that the keyboard has power while it is close to the receiver.
