The K380 connects through Bluetooth, not a USB cable

The Logitech K380 is a wireless keyboard that pairs with your device using Bluetooth — the same technology that connects wireless headphones or speakers. Unlike some keyboards that come with a small USB receiver, the K380 has no cable or dongle to plug in. Instead, you turn on Bluetooth on your device, put the keyboard into pairing mode, and they find each other.

The keyboard runs on two AA batteries, which you install in the battery compartment on the back. A full set of batteries typically lasts several months of normal use. The K380 is designed to work with phones, tablets, and computers running Windows, macOS, iOS, or Android.

Key Takeaways

  • Install two AA batteries in the back compartment before you start pairing, or the keyboard will not turn on.
  • Press and hold the Bluetooth button on the back of the keyboard for three seconds until the light blinks, then look for "Logitech K380" in your device's Bluetooth settings.
  • The keyboard can pair with up to three devices at once, and you switch between them using the numbered keys at the top.
  • If pairing fails, restart Bluetooth on your device, make sure the keyboard is charged, and try again from the beginning.

Install batteries and check the power switch

Open the battery compartment on the back of the keyboard by sliding the cover downward. Insert two AA batteries with the positive end (+) facing toward the spring inside. Close the cover by sliding it back up until it clicks.

Look at the bottom left corner of the keyboard. You will see a small power switch with an On and Off position. Slide it to On. The keyboard is now ready to pair. If nothing happens when you press keys, the batteries may be dead — try a fresh set before troubleshooting further.

Put the keyboard into pairing mode

On the back of the keyboard, you will find three numbered buttons labeled 1, 2, and 3. These are the Bluetooth pairing buttons. Press and hold the button labeled 1 for three seconds. You should see a light on the keyboard begin to blink. This blinking light means the keyboard is in pairing mode and searching for a device to connect to.

The keyboard will stay in pairing mode for about three minutes. If the light stops blinking before you finish the next step, press and hold button 1 again for three seconds to restart pairing mode.

Find and select the keyboard in your device's Bluetooth settings

On the device you want to connect (phone, tablet, or computer), open the Bluetooth settings. On most phones and tablets, this is in Settings under Bluetooth or Wireless. On Windows computers, go to Settings, then Devices, then Bluetooth. On Mac, go to System Preferences, then Bluetooth.

Look for "Logitech K380" in the list of available devices. Tap or click on it. Your device will send a connection request to the keyboard. Within a few seconds, the keyboard should connect and the blinking light should stop or turn solid. You should now be able to type on your device using the keyboard.

Switch between multiple devices using the numbered buttons

One of the main features of the K380 is that it can remember up to three different devices. You pair each device to a different button (1, 2, or 3). Once all three are paired, you can switch between them by pressing the corresponding button at the top of the keyboard.

To pair a second device, press and hold button 2 for three seconds until the light blinks. Then go to that device's Bluetooth settings and select "Logitech K380" again. Repeat this process for button 3 if you want to pair a third device. From then on, pressing button 1, 2, or 3 will when ready switch the keyboard to that device — no need to unpair or re-pair.

Troubleshoot if the keyboard will not pair

If the keyboard does not appear in your device's Bluetooth list, first check that the keyboard is actually in pairing mode — the light should be blinking. If it is not, press and hold the numbered button again for three seconds. Make sure the keyboard's power switch is set to On and the batteries are not dead.

On your device, turn Bluetooth off completely, wait five seconds, then turn it back on. This often clears out connection problems. Then put the keyboard back into pairing mode and try again. If you are trying to pair a device that was previously connected to a different button, you may need to "forget" the keyboard in that device's Bluetooth settings first, then pair it fresh.

If the keyboard pairs but keys do not work, try pressing a key on the keyboard to wake it up — it may have gone to sleep. If that does not work, restart your device and try typing again.

Frequently Asked Questions

Can I use the K380 with my phone and laptop at the same time?

Not simultaneously, but you can switch between them when ready. Pair your phone to button 1 and your laptop to button 2. Press button 1 to type on your phone, then press button 2 to type on your laptop. The keyboard remembers both connections and switches in seconds.

What do I do if I lose the pairing between the keyboard and my device?

Press and hold the same numbered button (1, 2, or 3) for three seconds again. The keyboard will re-enter pairing mode for that button. Go to your device's Bluetooth settings, find "Logitech K380", and select it again. This usually reconnects within a few seconds.

How long do the batteries last in the K380?

Two AA batteries typically last two to three months with regular daily use. Battery life depends on how much you type and whether the keyboard goes to sleep between uses. The keyboard does not have a low-battery warning, so replace batteries if keys start to feel unresponsive.

Can I use the K380 with an iPad or Android tablet?

Yes. The pairing process is the same as with phones and computers. Go to your tablet's Bluetooth settings, put the keyboard into pairing mode, and select "Logitech K380". The keyboard works with any device that supports Bluetooth, including tablets running iOS or Android.

What if the keyboard keeps disconnecting from my device?

Move the keyboard closer to your device — Bluetooth works best within about 30 feet, but obstacles like walls or metal can reduce range. If disconnections continue, try forgetting the keyboard in your device's Bluetooth settings and pairing it again from scratch. Outdated device software can also cause connection issues, so check for updates.