KZZI K75 PRO RGB 75% Wireless Gasket Mechanical Keyboard User Manual

Introduction

This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your KZZI K75 PRO RGB 75% Wireless Gasket Mechanical Keyboard. Please read this manual thoroughly to ensure optimal performance and longevity of your device.

What's in the Box

• K75 Gasket Keyboard
• 2-in-1 USB Cable (1.8m)
• Dust Cover
• 2-in-1 Keycap & Switch Puller
• 4 Replacement Switches

Figure 1: K75 PRO Keyboard and included accessories.

Key Features

• GASKET MOUNT Structure: Features a 1.2mm slotted PCB with Flex cuts and 4 high-quality sound absorbing layers for a consistent, softer, and more comfortable typing feel and pleasing acoustic feedback.
• 3 Modes Connection: Supports USB Type-C wired, stable 2.4GHz, and low-latency BT 5.0 wireless modes, easily toggled with the sensitive knob.
• Premium Custom Hot Swap Switches: Pre-lubed Eternity Tactile switches with south-facing transparent light diffusers provide clear keystroke feeling and brighter RGB backlight. Compatible with 3Pin or 5Pin switches.
• LED Power Display: Always visible battery level indicator and a built-in 3750mAh battery. Lasts up to 200 hours with backlight off.
• 82 Keys ANSI Layout: Compact 75% layout saves desk space while maintaining typing comfort. Double-shot PBT keycaps add retro aesthetics.
• Extra Hub Ports: Includes 1 USB port and 2 Type-C Ports for connecting peripherals. (Note: The left Type-C port is for wired mode only.)
• Programmable Software Support: Customize keyboard shortcuts, macros, and RGB backlight via the driver software.

Figure 2: Gasket Mount Structure for enhanced typing feel.

Figure 3: Custom POM Switches for optimal performance.

Setup

Initial Charging and Power

Before first use, it is recommended to fully charge the keyboard. Connect the provided USB-C cable to the keyboard's charging port and to a USB power source. The LED power display will indicate charging status. A full charge takes approximately 6-7 hours.

To power on/off the keyboard, use the physical switch located on the side of the keyboard. The power display will activate upon turning on.

Figure 4: Visible Power Display and Battery Life.

Connectivity Modes

The K75 PRO supports three connection modes: Wired, 2.4GHz Wireless, and Bluetooth 5.0. Use the knob on the keyboard to switch between modes.

1. Wired Mode (USB Type-C)

Connect the keyboard directly to your computer using the provided USB-C cable. This mode offers the fastest and most reliable connection, ideal for gaming or critical tasks. The left Type-C port is dedicated for wired connection and charging only.

Figure 5: Triple Mode Connectivity (Wired, 2.4GHz, Bluetooth).

Video 1: KZZI K75 Pro Connectivity: Wired Wireless Ready for Anything. This video demonstrates the various connectivity options of the K75 Pro keyboard, including wired and wireless modes, and how to switch between them.

2. 2.4GHz Wireless Mode

Insert the 2.4G USB receiver (dongle) into an available USB port on your computer. Switch the keyboard to 2.4G mode using the knob. This mode provides a stable and low-latency wireless experience.

Figure 6: Extra Hub Ports and USB Receiver Slot.

3. Bluetooth 5.0 Mode

Switch the keyboard to BT mode using the knob. The keyboard can connect to up to three Bluetooth devices. To pair, press Fn + Q, Fn + W, or Fn + E to select a Bluetooth channel. The indicator light will flash, indicating pairing mode. On your device (PC, tablet, smartphone), search for "KZZI K75 PRO" in Bluetooth settings and connect.

To reset Bluetooth connections, press and hold Fn + Q + W + E for approximately 5 seconds until the indicator lights flash rapidly, then release. This will clear all paired Bluetooth devices.

Operation

Key Functions and Layout

The K75 PRO features an 82-key ANSI layout, providing a compact form factor without sacrificing essential keys. The integrated knob allows for easy toggling between connectivity modes and can also control volume or backlight brightness depending on software settings.

Figure 7: KZZI K75 PRO Keyboard Layout.

Customization and Software

Unlock the full potential of your K75 PRO with the dedicated software. This allows for:

• Key Remapping: Assign custom functions to any key.
• Macro Creation: Record and assign complex key sequences.
• RGB Backlight Personalization: Choose from various lighting effects, adjust brightness, speed, and color mixing. The south-facing LEDs and transparent light diffusers enhance the RGB experience.

Figure 8: Hot Swappable PCB with South-Facing LED.

Video 2: KZZI K75 Pro RGB Gasket Mounted Mechanical Keyboard. This video provides an overview of the keyboard's features, including its RGB lighting and gasket mount design.

Video 3: Eternity Tactile Switch VS Moment Linear Switch. This video demonstrates the sound and feel of the different switch types available for the K75 PRO keyboard.

Maintenance

Cleaning

To clean your keyboard, first disconnect it from all power sources. Use the provided dust cover when not in use to prevent dust accumulation. For general cleaning, use a soft, lint-free cloth. For deeper cleaning, you can carefully remove keycaps using the included keycap puller and clean underneath with compressed air or a small brush. Avoid using harsh chemicals or abrasive materials.

Switch and Keycap Replacement

The K75 PRO features a hot-swappable PCB, allowing you to easily change switches without soldering. Use the included 2-in-1 keycap & switch puller to remove existing keycaps and switches. Align new 3-pin or 5-pin switches carefully and press them firmly into place. Ensure the pins are straight to avoid bending.

Troubleshooting

• Keyboard not responding:
  • Ensure the keyboard is charged.
  • Check the connection mode (wired, 2.4GHz, BT) and ensure it matches your device.
  • For 2.4GHz, ensure the USB dongle is properly inserted.
  • For Bluetooth, ensure it's paired correctly. Try resetting Bluetooth connections (Fn + Q + W + E for 5 seconds).
  • Try connecting via wired mode to confirm basic functionality.
• RGB backlight not working or dim:
  • Ensure the keyboard has sufficient battery charge.
  • Adjust brightness settings via the software or keyboard shortcuts.
  • Check software settings for any disabled lighting effects.
• Keys not registering or double-typing:
  • Ensure switches are fully seated. Gently press down on the affected keycap.
  • If a switch is faulty, replace it with one of the included spare switches or a compatible 3/5-pin switch.
  • Clean around the switch stem to remove any debris.
• Bluetooth pairing issues:
  • Ensure your device's Bluetooth is enabled and discoverable.
  • Reset the keyboard's Bluetooth connections (Fn + Q + W + E for 5 seconds).
  • Remove any previous pairings of the keyboard from your device's Bluetooth settings and try pairing again.

Specifications

Warranty and Support

For warranty information and technical support, please refer to the official KZZI website or the documentation included with your product. You may also contact KZZI customer service directly for assistance with product registration, troubleshooting, and warranty claims.