(Group Buy) MK65MX 65% Mechanical Keyboard Hotswap PCB

MK65MX: the versatile 65% PCB for ISO and ANSI builds
The MK65MX is a versatile 65% 1.6mm non-flex-cut wired hot-swap PCB designed as a replacement or upgrade option for a wide range of popular 65% O-ring keyboards.

Instead of being manufacturer-specific, the MK65MX uses standard hole patterns and is Unified C5 daughterboard compatible.

It is fully QMK, VIA, and VIAL compatible , with per-key RGB and all major layout options. Designed by Quark.

Layout flexibility without compromise
The MK65MX supports both ISO and ANSI layouts on a single PCB; with extensive multi-layout options for the main areas:

• ISO + ANSI layout support, perfect for UK-ISO, DE-ISO, or US-ANSI
  
• Split Left Shift + Big ANSI Left Shift
  
• Split backspace + regular backspace
  
• Stepped Capslock
  
• 6.25U and 7U Spacebar: compatible with most common spacebar size
  

Case compatibility
The MK65MX was tested with a range of common 65% cases:

✅ Tested compatibility:

• Kraze65
  
• scratch
  
• Kafka
  
• Fashion Sixtyfive R1 / 2021 (without silicone insert)
  
• Mode Sixtyfive R2 / 2025
  
• Mode Encore
  
• AIS65
  
• Block 67 R2
  
• Keycult No. 1/65
  
• Keycult No. 2/65
  
• IRON165
  
• Haven65
  
• Krush65
  

and very likely many more!


❌ Not tested compatible:

• KBDfans Dusk67
  
• Mode Envoy
  
• Orbit65
  
• Luminkey65
  
• Dune65
  

If your case is not listed here, it's worth taking a look at the hole pattern and the daughterboard connector — many more 65% keyboards should be compatible.

Per-key RGB and modern connection
The PCB is equipped with per-key RGB LEDs and can be configured via preset effects and scenes - individual LEDs/keys cannot be controlled! For the daughterboard connection, the MK65MX uses a modern PicoMolex EZMate connector, more precise, smaller and more reliable than classic JST connectors without interference from the base of the keyboard.

QMK with VIA and VIAL, full adaptability
The MK65MX runs on the proven QMK firmware (the firmware source code is published) and is compatible with both VIA and VIAL . This allows you to remap every single key, record macros, set up layers, and customize the board precisely to your workflow directly in your browser, without installing any drivers.

Specifications

• Layout: 65%: ISO and ANSI multi-layout
  
• Designer: Quark
  
• Type: wired hot-swap PCB
• Connectivity:
  • USB-C wired
    
• PCB Thickness: 1.6mm
• Flex-cuts: No
• Lighting: Per-key RGB LEDs
• Daughterboard Connector: PicoMolex EZMate
• Battery Connection: via the included daughterboard (Unified C5 Footprint)
• Chip: STM32
• Flash: 128 MB
• Firmware: QMK (firmware source code will be released)
• Software: VIA compatible
• Switch Compatibility: MX-style hot-swap
• Layout Options:
  • ISO and ANSI
  • Split left shift + ANSI big left shift
  • Split backspace + regular backspace
  • Stepped capslock
  • 6.25U and 7U spacebar
  • OS Compatibility: Windows, macOS, Linux
• Includes:
  • 1x MK65MXW PCB
  • 1x PicoMolex to JST-SH Cable - 15cm
  • 1x PicoMolex to JST-SH Cable - 20cm
  • 1x Daughter Board (Unified DB C5 Footprint)
  • Note - No batteries included!