ATTACK SHARK AK820
ATTACK SHARK X Ajazz AK820 Mechanical Keyboard User Manual
Model: AK820
Brand: ATTACK SHARK
Product Overview
The ATTACK SHARK X Ajazz AK820 is a 75% layout hot-swappable mechanical keyboard designed for gaming and everyday use. It features an 82-key layout, a multi-function rotary knob, gasket-mounted design for enhanced typing feel, and customizable LED backlighting. This keyboard is compatible with both Windows and Mac operating systems and connects via USB-C wired connection.
Key Features
- 75% Percent Layout (82 keys) for space efficiency while retaining essential keys.
- N-Key Rollover (NKRO) ensures all simultaneous key presses are registered accurately.
- Multi-Function Metal Knob for independent volume control and mute functionality.
- Gasket Mounted Design with 5 layers of sound insulation (Poron sandwich cotton, IXPE under-axis pad, PET premium sound pad, bottom cotton) for a softer, more elastic typing experience and reduced noise.
- Hot-Swappable PCB (3/5-pin) allows for easy switch replacement without soldering.
- Pre-lubed AS Red Switches (linear) with a 50 million keystroke lifespan, ideal for gaming and office use.
- 20 LED Backlight Effects (white light) with 5 brightness levels and 5 lighting speeds.
- Durable PBT Keycaps with wear-resistant, waterproof properties and high light transmittance.
- Ergonomic Design with OEM keycaps for comfortable typing.
Package Contents
- ATTACK SHARK X Ajazz AK820 Mechanical Keyboard
- USB Cable
- 2-in-1 Key Extractor (Keycap Puller)
Keyboard Layout

Figure 1: Overview of the AK820 keyboard layout.

Figure 2: Visual representation of the AK820's key features.
Setup
Connecting the Keyboard
- Locate the USB-C port on the back or side of the keyboard.
- Connect the provided USB-C cable to the keyboard's USB-C port.
- Plug the other end of the USB cable into an available USB port on your computer (PC or Mac).
- The keyboard is plug-and-play and should be recognized automatically by your operating system.

Figure 3: The compact design and USB-C connection point.
Operating Instructions
Multimedia Knob Functionality
The metal rotary knob located on the top right of the keyboard provides convenient multimedia control:
- Rotate: Turn the knob clockwise to increase volume, and counter-clockwise to decrease volume.
- Press: Press the knob to mute or unmute the audio.

Figure 4: Detailed view of the multimedia knob and its functions.
Backlight Control
The AK820 features 20 white LED backlight effects. You can customize the lighting to suit your preference:
- Change Light Effects: Press FN + | to cycle through the 20 available backlight effects.
- Adjust Brightness: Use specific key combinations (refer to keyboard legends or software) to adjust between 5 brightness levels.
- Adjust Speed: Use specific key combinations (refer to keyboard legends or software) to adjust between 5 lighting speeds.
- Custom Gaming Lighting: Press FN + 1! / 2@ / 3# to access and customize 3 sets of gaming lighting effects. Choose the light recording mode and save your lighting profiles.

Figure 5: The keyboard showcasing its LED backlight effects.
Hot-Swappable Switches
The AK820's high-quality PCB supports 3/5-pin hot-swap switches, allowing you to easily change switches without soldering. This feature enables customization of your typing experience.
- Use the included 2-in-1 key extractor to carefully remove keycaps and switches.
- Align the pins of the new switch with the sockets on the PCB and gently press down until it clicks into place.
- Replace the keycap.

Figure 6: Illustration of the hot-swappable switch mechanism.
Video 1: Demonstrating the unboxing, features, and sound test of the ATTACK SHARK AK820 mechanical keyboard, including its hot-swappable switches and rotary knob.
N-Key Rollover (NKRO)
The AK820 supports N-Key Rollover, meaning that every key press is registered independently, even when multiple keys are pressed simultaneously. This is crucial for fast-paced gaming and accurate typing, preventing
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