Razer BlackWidow V4 Low-Profile Hyperspeed

1. Package Contents

The package includes:

• Razer BlackWidow V4 Low-profile HyperSpeed keyboard
• Razer HyperSpeed Wireless Dongle + USB Dongle Adapter
• USB Type A to Type C Cable
• Important Product Information Guide

2. What You Need

Product Requirements

• USB Type-A port or Bluetooth connection.

RAZER SYNAPSE System Requirements

• Windows® 10 64-bit or later.
• Internet connection (for software installation).

3. Warranty Information

Register your product to receive benefits at razerid.razer.com/warranty.

4. Getting Started

Keyboard Charging

Connect the keyboard via USB Type-A to charge. The charging indicator shows:

• Pulsing green: Charging
• Solid green: Fully Charged

For optimal performance, fully charge the keyboard before first use. The keyboard can be used while connected.

5. How to Use the Razer BlackWidow V4 Low-Profile Hyperspeed

Connection Modes

Razer HyperSpeed Wireless Mode (2.4 GHz)

Connect the Razer HyperSpeed Wireless Dongle to a USB Type-A port on your PC. Switch the keyboard to HyperSpeed mode using the dedicated button. The indicator light will flash white while connecting and turn solid white when connected.

Bluetooth Mode

Switch the keyboard to Bluetooth mode. Press the Bluetooth Mode / Profile Cycle Button to cycle through profiles (Profile 1: Red, Profile 2: Green, Profile 3: Blue). The button will briefly display the selected profile. The keyboard can pair with up to 3 devices.

To re-enter pairing mode, press and hold the Bluetooth Mode / Profile Cycle Button for 5 seconds.

Wired Mode

Connect the keyboard directly to your PC using the USB Type-A to Type-C cable.

Features

Battery Level Notification

A low battery is indicated by a flashing red light (below 10%). The notification repeats until the battery is depleted or the keyboard is recharged.

Media Controls

Dedicated media buttons allow control over playback:

• Previous Track ◀️
• Play/Pause ▶️ / ⏸️
• Next Track ▶️

Multifunction Roller

The roller controls volume:

• Scroll Up ?: Increase volume
• Scroll Down ?: Decrease volume
• Press Roller ?: Mute/Unmute

Wireless Mode Switching

Switch between Razer HyperSpeed Wireless Mode and Bluetooth Mode using the dedicated button.

AI Prompt Master

Access AI prompts by pressing the AI Prompt Master button. Requires Razer Synapse.

Profile Shortcut Keys

Quickly switch between saved profiles:

Profiles 1-4 can be remapped and customized in Razer Synapse. Holding the Fn key displays the active profile.

Battery Level / Status Button

Press and hold for 3 seconds to enable/disable Power Save Mode.

Power Save Mode reduces polling rate, turns off lighting, and disconnects Synapse to conserve battery.

Checking Battery Level

Press the Battery Level / Status Button to view the battery level. The indicator bar shows levels from 0% to 100% with color codes: Red, Orange, Yellow, Green.

Keyboard Functions (Hotkeys/Shortcuts)

On-the-fly Macro Recording

Record and save macros by pressing a key combination, inputting keys, and pressing the combination again to stop. The macro key will flash. Press a key to save the macro.

CHROMA Effects

Control lighting effects using hotkeys:

* Press again to change color.
** Press again to change direction.

Razer Synapse allows customization of keyboard lighting effects and other advanced features.

6. Setting Up the Razer BlackWidow V4 Low-Profile Hyperspeed

This guide provides an overview of the Razer Synapse app. Features may vary by device and Synapse version. Internet connection is required for cloud-based features, installation, and updates. Razer ID registration is recommended but optional.

SYNAPSE Tab

The Synapse tab is displayed upon the initial launch of Razer Synapse after installation. Use the following buttons to navigate the user interface:

• Minimize ?: Minimizes the app to the taskbar while it runs in the background.
• Maximize ?: Maximizes the app window to fill the screen. Click again to restore the original size.
• Close ❌: Closes all associated tabs and exits the application.
• Previous Tab ◀️: Returns to the last accessed tab.
• Next Tab ➡️: Moves to the next page, useful after using the Previous Tab button.
• Refresh Tab ?: Reloads the current page, useful if content is not displaying correctly or for the latest updates.
• Download Update ⬆️: Notifies of app changes.
• Other ?: Opens a pop-up for quick access to [Device], [Module], and [Other Installed Apps] tabs.
• Settings ⚙️: Opens the Settings tab for quick configuration changes.
• Profiles ?: Opens a pop-up with options like [Login], [Feedback], [Rate this software], [Add Wi-Fi Device], [Exit].
• Information ℹ️: Displays additional information about features when hovered over.

Dashboard

The Dashboard tab provides an overview of Razer Synapse and access to all your Razer devices, modules, and online services.

Gamer Room

The Gamer Room tab displays all devices with Razer Aether Light functionality. It allows you to view and manage devices supported by Gamer Room.

Synapse Override: Customize device lighting and synchronize with Chroma-compatible games or Chroma Connect app.

Gamer Room App Control: Control supported devices remotely via the Gamer Room app.

Devices & Modules

The Modules tab lists installed and available modules. Global Shortcuts allow binding custom key combinations to Razer Synapse functions, usable across all device profiles.

BlackWidow V4 Low-Profile Hyperspeed Tab

This is the main tab for your Razer keyboard in Synapse. Customize key assignments, lighting, power consumption, etc. Changes are auto-saved locally and to the cloud. Access profile options via buttons below.

• Profile Dropdown Bar: Click to view and switch between all device profiles.
• ... Other: Opens a pop-up with profile-related options.
• Onboard Profiles: Save and transfer profiles directly to the device.

Customize Tab

Adjust key assignments, optimize switch and polling rate settings, and configure Snap Tap.

Profiles

Profiles are data storage systems for Razer device settings. They can be added, imported, renamed, duplicated, exported, or deleted via the 'Other' button.

Hypershift: Activates a second set of key assignments. By default, the Hypershift key is mapped to the Fn key, but can be reassigned.

Gaming Mode: Customize which keys (e.g., Windows Key, Alt+Tab, Alt+F4) are disabled when Gaming Mode is active.

Polling Rate: Higher rates reduce input lag by sending data more frequently.

Snap Tap: Configures keys to prioritize the latest input, even if the first key is still pressed. Details available via link.

HyperSpeed Multi-Device Pairing: Pair multiple Razer devices to a single dongle.

Key Switch Optimization: Choose optimal settings for analog keys, with adjustments for typing (delay to prevent mispresses) and gaming (responsiveness).

Keyboard Properties: Access Windows keyboard settings like delay, interval, cursor blink rate, and driver information.

Reassign Menu

Access the Reassign menu to view and change current key assignments. Options include:

• Default: Resets a key to its original setting.
• AI Launcher: Launches AI prompts or overlays.
• Keyboard Function: Assign keyboard functions, with Turbo Mode for rapid activation.
• Mouse Function: Assign mouse actions (left/right click, scroll, double click, scroll up/down, mouse buttons 4/5, repeated actions).
• Macro: Assign recorded sequences of keystrokes, button presses, and mouse movements.
• Device Link: Control functions of other Razer Synapse devices.
• Profile Switching: Quickly change between saved profiles.
• Chroma Effect Switching: Cycle through Chroma Studio effects.
• Device Brightness: Control LED lighting.
• Razer Hypershift: Assign keys to activate Hypershift mode.
• Launch Program: Open applications or websites.
• Multimedia: Assign media controls (volume, playback, mute).
• Windows Shortcut: Assign Windows OS shortcuts.
• Text Function: Input pre-defined text strings.
• Disable: Makes a key unusable.

Lighting Tab

Customize your Razer device's lighting effects.

• Brightness: Adjust lighting brightness or turn it off.
• Turn off Lighting: Automatically turns off lighting when the system display is off or the device is idle.
• Quick Effects: Apply preset lighting effects like Environmental Awareness, Audio Meter, Breathing, Fire, Reactive, Ripple, Spectrum Cycling, Star-lit, Static, Wave, and Wheel.

Advanced Effects: Select Chroma effect profiles or create custom ones using Chroma Studio.

Chroma Sync: Synchronize lighting effects with other Razer Chroma-compatible devices.

Power Tab

Manage device power consumption during battery operation.

• Dim Lighting: Set idle time before dimming the device.
• Wireless Power Saving: Set idle time before the device enters sleep mode.

Linked Games Tab

Add, display, and search for applications and peripherals linked to your Razer devices. Link apps to specific device profiles for automatic switching when launching the app.

Devices Tab

View peripherals and their linked applications. Add, remove, or filter linked apps. Drag-and-drop executables or use the scan function to add new apps.

Macros Tab

Create, edit, and organize macros, which are sequences of keystrokes, button presses, and mouse movements. Assign macros to device keys or buttons.

• Macro Dropdown Bar: View, search, sort, and manage all macros. Create new folders.
• ... Other: Access macro-related options.
• New Macro: Quickly create a new macro.

Macro creation options include delay settings, shortcut keys for recording, and mouse movement tracking.

Keybinds Tab

Assign shortcut keys to trigger macros. Bind macros to specific keys or buttons without closing the Macro tab.

Settings Tab

Configure various Synapse application settings.

• Synapse: App-specific options like Auto-launch, Recommendations, Device Lighting control, and Notifications.
• Synapse 3 Profile Migration: Transfer profiles, macros, and Chroma effects from Synapse 3 to Synapse 4.
• Reset Tutorials: Re-enable all tutorials.
• General: Access other options and software information.
• Language: Change the display language of Razer Synapse.
• About: View software version, copyright, terms of use, and social community links.

Feedback Tab

Submit feedback, suggestions, or bug reports to help improve Razer Synapse. You may receive rewards for reporting bugs or participating in the vulnerability reward program.

7. Safety Precautions and Maintenance

Safety Guidelines

To ensure maximum safety when using the Razer BlackWidow V4 Low-Profile Hyperspeed:

• Keep the keyboard and accessories away from children.
• Do not disassemble the product. Avoid abnormal electrical loads.
• Keep the product away from liquids, moisture, and water. Operate within the specified temperature range (0°C~40°C).
• If the product malfunctions, contact Razer support via support.razer.com.

Ergonomics

To prevent physical discomfort and potential injuries from repetitive motions, improper positioning, or poor posture:

1. Position the keyboard and monitor directly in front of you, with the mouse beside it. Keep elbows at a comfortable, close position to easily reach the keyboard.
2. Adjust chair and desk height so the keyboard and mouse are at or below elbow level.
3. Place feet flat on the floor, maintain an upright posture, and relax your shoulders.
4. Keep wrists straight and relaxed while gaming. Avoid bending, extending, or twisting hands for prolonged periods during repetitive actions.
5. Do not rest wrists on hard surfaces for extended periods.
6. Use a wrist rest during gaming to support your wrists.
7. Customize keyboard keys to your preferred gaming style to minimize repetitive or awkward movements.
8. Avoid sitting in the same posture for long periods. Stand up, move away from the desk, and stretch your arms, shoulders, neck, and legs.

If you experience pain, numbness, or tingling in your hands, wrists, elbows, shoulders, neck, or back, seek medical attention immediately.

Maintenance

To keep the Razer BlackWidow V4 Low-Profile HyperSpeed in optimal condition, minimal maintenance is required. Once a month, disconnect the product from your computer and turn it off. Clean it using a soft cloth or cotton swab. Do not use soap or harsh detergents.

Battery Warning

The Razer BlackWidow V4 Low-Profile Hyperspeed uses a rechargeable lithium-ion battery. Battery life depends on usage environment. If the battery seems depleted, recharge it.

Caution: Do not open, cut, short-circuit, expose to liquids, fire, or heat. This may cause battery leakage or explosion, leading to injury. Battery lifespan varies with usage.

8. Legal Information

Copyright and Intellectual Property Information

©2025 Razer Inc. All rights reserved. Razer, the triple-headed snake logo, Razer logo, "For Gamers. By Gamers.", and the Razer Chroma logo are trademarks or registered trademarks of Razer Inc. in the US and/or other countries. All other trademarks are the property of their respective owners.

Microsoft Copilot, Microsoft Copilot logo, and Windows are trademarks of Microsoft Corporation.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc., and any use of these marks by Razer is under license.

Razer Inc. owns copyrights, trademarks, trade secrets, patents, and other intellectual property rights related to the products described in this document. This document does not grant any license to use this intellectual property. The product may differ from the photos shown on packaging. Information is subject to change without notice.

Limited Warranty

For the latest warranty terms, visit razer.com/warranty.

Limitation of Liability

Razer shall not be liable for any loss of profits, loss of information or data, special, incidental, indirect, punitive, or consequential damages arising from the distribution, sale, resale, or use of the product, or if the product is unusable. Razer's liability shall not exceed the retail purchase price of the product.

General

These terms are governed by the laws of the jurisdiction where the product was purchased. If any provision is found invalid, the remaining provisions remain in effect. Razer reserves the right to modify these terms at any time without notice.