Razer Deathadder v4 Pro dongle doesn't work | Razer Insider
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Question

Razer Deathadder v4 Pro dongle doesn't work

  • November 4, 2025
  • 1 reply
  • 76 views

Anxu211

Hello!

 

Today I bought new razer mouse (deathadder v4 pro). I registered my mouse and connected to razer synapse 4 too but my dongle doesn’t work. The LED lights won’t turn on even when my dongle is connected to the computer. I tried different computers too but nothing seems to work. Mouse works with USB cable but not wirelessly. Can someone please help?

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1 Reply

Razer.Aero
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  • Razer Support
  • November 5, 2025

Hi Anxu211,

I’m here to help. I understand that your Razer DeathAdder V4 Pro dongle is not detected by your computer. To resolved the issue, please perform the troubleshooting steps below:
1. Make sure your mouse is fully charged.
2. Make sure wireless mode is ON or the mouse is switched to the correct wireless mode.
3. Connect the USB dongle directly to the PC and verify there is a clear line of sight from the mouse to the dongle.
4. Please try to update your device firmware and download the pairing utility in this here

Should you need further help, feel free to send me a PM with your device’s serial number so I can check for other workarounds. Thanks!

*Thread locked to curb the conversation to PMs.