Gigabyte AORUS K9 Optical RGB Gaming Keyboard w/ Flaretech Red Switches

MX73991 AORUS K9 Optical RGB Gaming Keyboard w/ Flaretech Red Switches
MX73991 AORUS K9 Optical RGB Gaming Keyboard w/ Flaretech Red Switches MX73991 AORUS K9 Optical RGB Gaming Keyboard w/ Flaretech Red Switches MX73991 AORUS K9 Optical RGB Gaming Keyboard w/ Flaretech Red Switches MX73991 AORUS K9 Optical RGB Gaming Keyboard w/ Flaretech Red Switches

Product Info

AORUS K9 Optical Mechanical Switches Gaming Keyboard - The Future of Keyboards

Forget about conventional mechanical switches. The optical Flaretech switch is faster and has a longer lifespan than traditional mechanical switches. AORUS has utilized this technology to craft a stylish, ultra durable performance keyboard that works flawlessly regardless of scenario.

  • AORUS RGB Fusion full RGB backlighting
  • AORUS Engine - You're in control
  • Flaretech Optical-Mechanical Red gaming switches
  • 0.03ms Debounce time - When speed matters
  • N-Key Rollover
  • Ultra Durable - 100 million keystrokes
  • Splash proof
  • Swappable Switches - Custom gaming experience
  • Chatterproof
  • Exclusive top-quality steel springs
  • Floating key design
  • Cable management
  • Braided cable


0.03ms Debounce Time - When Speed Matters

The Flaretech switches offer an unbelievable debounce time - only 0.03ms, compared to a full 20ms in traditional switches. The near-zero debounce time offers you an in-game advantage and higher precision in movements, thanks to signal processing at the speed of light.

Ultra Durable

The K9 Optical comes with a much longer lifespan than traditional mechanical keyboards. Where traditional keyboards offer you switches rated up to 50 million keystrokes, AORUS doubles that - 100 million keystrokes. This is made possible yet again by the use of optical switches that make do without metal that will oxidize and corrode over time.

Splash Proof

Hydrophobic Conformal Coating - Harsh, dusty conditions and even rain or liquid spills are no match for the AORUS K9 Optical. Without exposed metal connectors, it is fully splash proof, even enabling use under water.


By utilizing optical Flaretech switches, the K9 eliminates a common problem with mechanical keyboards - chatter. Because it uses fully optical actuation, rather than electromechanical, dust and dirt won't adversely affect your gaming experience by causing chatter.

Custom Gaming Experience

The K9 Optical is not only faster and more durable than conventional mechanical keyboards - it's also modular. Mix and match switches as you wish.

Spring Me to Heaven

For maximum consistency and optimum typing feel, AORUS exclusively utilizes top-quality steel springs in the switches.

All Key Programmable

Easily make any keypress or key combination a macro or choose from a wide array of lighting effects with the AORUS Engine software.

Floating Key Design

Experience the Flaretech switches and the RGB backlighting in all its glory. The floating key design leaves more of the switch exposed, for more vivid lighting effects and easier cleaning access.

N-Key Rollover

The AORUS K9 comes with full N-Key rollover - meaning you won't be left a sitting target when the going gets tough in-game. Every single keystroke gets registered, every single time, regardless of how many other keys are pressed simultaneously.

Braided Cable

The durability and aesthetics considerations of the AORUS K9 are not limited to the chassis and switches - it also features a braided USB cable. Not only does it look better than a plain plastic cable, it is a lot more durable.

Cable Management

Looking for that perfect cable routing on your desktop? The K9 offers you different ways to route your cable, with three different options, and a full 2 meter lead.

Additional 9 Switches with Superior PBT Keycaps

PBT has better hardness, durability and smoother texture than normal ABS. Not only PBT has longer lifespan, it can also significantly resist stains of oil from your fingers. AORUS K9 Optical comes with additional 9 switches with PBT keycaps attached, including W, A, S, D, ESC and 4 arrow keys. For gamers who buy red switches will get blue switches and vice versa, now gamers can customize your K9 Optical with different switches and colors with superior PBT keycap!

System Requirements

  • Windows® 10 / 8.1 / 8 / 7
  • Available USB port
  • Internet connection


Product Type RGB Backlighting Optical-Mechanical Gaming Keyboard
Part Number GK-AORUS K9 RED
Colour Black
Keyboard Layout Full, Standard
Key Switches Flaretech Optical-Mechanical Red switches
w/ 55g actuation force
Anti-Ghosting 100% anti-ghosting
w/ N-Key Rollover (NKRO)
Response Time N/A
Media Control Yes
Game Mode Yes
Memory Yes, on-board
Software AORUS Engine
Features Windows key lock
22 function keys, combination work with "Fn" key
Keystroke Life 100+ million times
Backlighting RGB Fusion - Per Key 16.7M customizable colors
Connectivity Wired
Interface USB 2.0
Power USB powered
USB Passthrough N/A
Polling Rate 1000 Hz
Cable Type 2m braided cable
Dimensions 439 x 140 x 37 mm (17.3" x 5.5" x 1.5")
Weight 1180g (2.6 lbs)

Package Contents

  • Gigabyte AORUS K9 RGB Backlighting Optical Mechanical Gaming Keyboard
  • 9 x Additional Switches with PBT Keycaps
  • 1 x Keycap Puller
  • Quick Start Guide