BlackWidow V4 Low-Profile TKL HyperSpeed + Orochi V2 – Synapse Multi-Device Pairing Utility Fails / Scans Indefinitely | Razer Insider
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BlackWidow V4 Low-Profile TKL HyperSpeed + Orochi V2 – Synapse Multi-Device Pairing Utility Fails / Scans Indefinitely

  • May 15, 2026
  • 1 reply
  • 20 views
byteHansaYellowsight466

Hi everyone,

I am trying to pair my Razer Orochi V2 mouse to my BlackWidow V4 Low-Profile Tenkeyless (TKL) HyperSpeed keyboard dongle to free up a USB port using the Multi-Device Pairing utility in Razer Synapse. Unfortunately, Synapse scans indefinitely and refuses to detect or bind the mouse to the keyboard's receiver.  I’m on an Asus Zenbook A14 (ARM based laptop) running Windows 11 Home).     Both devices pair independently by either wireless (via their own dongles) or via Bluetooth.

I’ve confirmed visually that both devices have the model numbers shows below and are on the official multi-device dongle (HyperSpeed Gen 2) LIST:

Razer Orochi V2 | RZ01-0373
Razer BlackWidow V4 Low-profile Tenkeyless HyperSpeed | RZ03-0545
 

 

Here is a breakdown of everything I have already tried to troubleshoot this issue so we can skip the basics:

  • Hardware State: The original Orochi V2 USB dongle has been completely unplugged from the PC to eliminate signal conflict. The mouse has fresh battery power and is untethered.

  • Primary Dongle: I’ve tried using both the keyboard’s and the mouse’s dongle as primary.

  • Dongle Placement: The BlackWidow V4 Low-Profile TKL dongle is plugged directly into a primary motherboard USB port (not an unpowered external USB hub).

  • Keyboard Layout/State: Cleared up a stuck Bluetooth profile looping bug on the keyboard using the FN + ALT profile commands, and verified the keyboard's physical toggle switch is set to the Wireless setting.

  • Mouse Mode Troubleshooting: Tried running the Synapse utility with the Orochi V2 flipped to its 2.4GHz switch setting right next to the dongle, leaving it button-free to let the utility auto-intercept it.

  • Manual Pairing Broadcast Combos:

    • Held down the Side Buttons + Scroll Wheel, which triggers a fast blink (internal firmware loop/reset code).

    • Held down the Side Buttons + DPI Button, which triggers a slower, dual-blink pattern. Note: Verified this specific combo is the native Bluetooth pairing broadcast, so it only activates when the physical slider is toggled to BT mode, not the required 2.4GHz mode.

Despite trying these connection sequences in exact order, the Multi-Device utility in Synapse just times out or hangs on the scanning screen.

Is there a specific standalone HyperSpeed utility version or a sequential firmware update order required to make the Orochi V2 handshake properly with the BlackWidow V4 Low-Profile TKL receiver?

Any advice would be appreciated!

1 Reply

byteHansaYellowsight466

Hi everyone,

I am trying to pair my Razer Orochi V2 mouse to my BlackWidow V4 Low-Profile Tenkeyless (TKL) HyperSpeed keyboard dongle to free up a USB port using the Multi-Device Pairing utility in Razer Synapse. Unfortunately, Synapse scans indefinitely and refuses to detect or bind the mouse to the keyboard's receiver.  I’m on an Asus Zenbook A14 (ARM based laptop) running Windows 11 Home).     Both devices pair independently by either wireless (via their own dongles) or via Bluetooth.

I’ve confirmed visually that both devices have the model numbers shows below and are on the official multi-device dongle (HyperSpeed Gen 2) LIST:

Razer Orochi V2 | RZ01-0373
Razer BlackWidow V4 Low-profile Tenkeyless HyperSpeed | RZ03-0545
 

 

Here is a breakdown of everything I have already tried to troubleshoot this issue so we can skip the basics:

  • Hardware State: The original Orochi V2 USB dongle has been completely unplugged from the PC to eliminate signal conflict. The mouse has fresh battery power and is untethered.

  • Primary Dongle: I’ve tried using both the keyboard’s and the mouse’s dongle as primary.

  • Dongle Placement: The BlackWidow V4 Low-Profile TKL dongle is plugged directly into a primary motherboard USB port (not an unpowered external USB hub).

  • Keyboard Layout/State: Cleared up a stuck Bluetooth profile looping bug on the keyboard using the FN + ALT profile commands, and verified the keyboard's physical toggle switch is set to the Wireless setting.

  • Mouse Mode Troubleshooting: Tried running the Synapse utility with the Orochi V2 flipped to its 2.4GHz switch setting right next to the dongle, leaving it button-free to let the utility auto-intercept it.

  • Manual Pairing Broadcast Combos:

    • Held down the Side Buttons + Scroll Wheel, which triggers a fast blink (internal firmware loop/reset code).

    • Held down the Side Buttons + DPI Button, which triggers a slower, dual-blink pattern. Note: Verified this specific combo is the native Bluetooth pairing broadcast, so it only activates when the physical slider is toggled to BT mode, not the required 2.4GHz mode.

Despite trying these connection sequences in exact order, the Multi-Device utility in Synapse just times out or hangs on the scanning screen.

Is there a specific standalone HyperSpeed utility version or a sequential firmware update order required to make the Orochi V2 handshake properly with the BlackWidow V4 Low-Profile TKL receiver?

Any advice would be appreciated!



I figured it out.    Multi-device pairing thru the Synapse software doesn’t work on my Asus Zenbook laptop (ARM/Copilot+ PC).   All of the other Razer software (and most of Synapse’s functions) work, but not the Multi-Device pairing.

I used my son’s desktop to do the multi-device pairing and the Blackwidow dongle picked up the Orochi mouse within seconds.

However, now I have an issue where the Blackwidow works fine for several minutes but then the Wireless connection drops and the Tilde/2.4 key starts flashing.

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