How do I connect the Corsair Harpoon using the USB wireless dongle?
Applies to: Corsair Harpoon RGB Wireless Optical Gaming Mouse
Last updated: September 2025
Problem
The Corsair Harpoon Wireless Mouse includes a 2.4GHz USB dongle for low-latency gaming. If the dongle isn’t connected properly, or the mouse isn’t set to the correct mode, the mouse won’t work wirelessly.
Solution
You can connect the Corsair Harpoon using the included USB wireless dongle by plugging it into your PC and setting the mouse to 2.4GHz wireless mode.
Step-by-step instructions
Setting up the dongle
- Locate the USB wireless dongle (often stored inside the mouse or packaging).
- Plug the dongle into an available USB port on your PC or laptop.
Preparing the mouse
3. Charge the mouse with the included USB cable if the battery is low.
4. On the bottom of the mouse, move the mode switch to 2.4GHz wireless.
5. The indicator light should turn on, showing the mouse is active.
Testing the connection
6. Move the mouse to check cursor movement on your screen.
7. Test left/right clicks and the scroll wheel.
8. If there’s no response, unplug and reinsert the dongle, then retry.
Using iCUE software (optional)
9. Download and install Corsair iCUE from the Corsair website.
10. Open iCUE and confirm the Harpoon Wireless is detected.
11. Use iCUE to customize DPI, button mapping, lighting, and polling rate.
Optional methods or tools
- USB extension cable: Brings the dongle closer to the mouse if your PC is under a desk, reducing interference.
- Wired mode: Connect via USB cable if you need to charge while gaming.
Best practices or tips
- Use the dongle for lowest-latency wireless gaming (better than Bluetooth).
- Keep the dongle within line of sight of the mouse to avoid interference.
- Avoid plugging the dongle into a USB hub with many other wireless devices to reduce lag.
- Store the dongle in the mouse’s compartment when traveling to prevent loss.
