Keychron K2 Max Keyboard Universal USB RF Wireless Bluetooth Black Grey 75%

Keychron K2 Max is a 75% wireless mechanical keyboard with 84 keys, offering USB wired, 2.4 GHz RF, and Bluetooth 5.1 connectivity. Configurable via QMK firmware and the Keychron Launcher web app, it supports cross-platform use with dedicated keycaps for macOS and Windows and a system toggle for saving two layouts. The keyboard features multi-layer acoustic foam, a steel plate and added weight to improve typing feel and sound, south-facing RGB backlighting, OSA-profile double-shot PBT keycaps, and screw-in PCB stabilizers for stable large keys.

Advantages

The K2 Max provides low-latency performance with a 1000 Hz polling rate on 2.4 GHz and wired modes, an ARM MCU with 256 KB flash for advanced customization, and optional hot-swappable sockets compatible with most 3‑pin and 5‑pin MX-style switches. Enhanced acoustic foams (IXPE, PET, EPDM) and a steel plate deliver improved sound and responsiveness, while south-facing RGB and high-transmittance switch housings ensure clear backlighting. Three adjustable typing angles and ergonomic OSA-profile keycaps support comfortable long-term use.

Suitable for

• Desktop and laptop users needing compact 75% layout
• Users who switch frequently between macOS and Windows
• Gamers requiring low-latency wireless or wired connection
• Keyboard enthusiasts who customize switches and key mappings (QMK/Launcher)

Key specifications

• Form factor: 75% (84 keys)
• Connectivity: USB wired, 2.4 GHz RF (1000 Hz), Bluetooth 5.1
• Firmware: QMK compatible; configurable with Keychron Launcher web app
• Switches: Hot-swappable (optional); compatible with most 3‑pin and 5‑pin MX-style switches
• Keycaps: OSA profile double-shot PBT; includes Windows and macOS sets
• Backlight: South-facing RGB with 22+ effects and adjustable hue/saturation/brightness/speed
• Internal: ARM MCU with 256 KB flash
• Acoustic: Multi-layer foams (IXPE, PET, EPDM), steel plate, added weight
• Stabilizers: Screw-in PCB stabilizers
• Adjustable angles: 5°, 9°, 12°
• Colors: Black, Grey

How to use

Connect the Keychron K2 Max via USB for wired use, pair it over 2.4 GHz with the included receiver for low-latency gaming, or pair up to three devices over Bluetooth 5.1 for multitasking. Use the system toggle to switch between macOS and Windows layouts and change keycaps accordingly. For key remapping and macro setup, install and access QMK-compatible firmware through the Keychron Launcher web app and program layers, macros, and individual key functions. If you have the hot-swappable version, remove and replace MX-style switches by pulling the keycap and extracting the switch without soldering.

Recommendations

For best results, use the 2.4 GHz connection when low latency is required (gaming) and Bluetooth for multi-device workflows. Install the Keychron Launcher to save and switch layouts, and consider using screw-in stabilizers and compatible MX switches to fine-tune typing feel. Clean keycaps periodically and avoid liquid exposure to preserve PBT texture and switch longevity.