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White compact mechanical keyboard with blue switches and RGB backlighting

Corn Electronics

Corn Electronics GK21S Gaming Keyboard White Blue Switch

SKU CH-MG4Y-X56RS

A hot-swappable mechanical kit with Bluetooth 5.1 dual-mode connectivity, per-key RGB lighting and a 750 mAh battery

  • Key SwitchBlue Switch
  • Keyboard ColorWhite

Key Switch Type Blue Switch

Keyboard Color White

  • 32-bit MCU delivers responsive input processing
  • 8M Flash stores custom profiles onboard
  • 8M RGB colours with per-key lighting control
  • Bluetooth 5.1 plus Type-C wired dual-mode connectivity
  • Hot-swappable Kailh sockets let you change switches without soldering

21-Key Bluetooth 5.1 Gaming Kit

The Corn Electronics GK21S is a compact 21-key mechanical keyboard kit aimed at enthusiasts who want a portable numpad or macro pad with wireless freedom. It ships as a white PCB kit fitted with clicky Blue switches and per-key RGB illumination.

750 mAh battery and 8 MB flash

The built-in 750 mAh lithium cell powers the Bluetooth 5.1 link for cable-free use, while a USB Type-C connection provides a wired alternative. Onboard 8 MB flash stores up to three programmable layers of macros and lighting profiles without relying on host software.

Hot-swap Kailh sockets and music rhythm

Hot-pluggable Kailh connectors let you swap Cherry, BOX, Gateron or other three- and five-pin MX switches without soldering. The firmware also drives a music-rhythm lighting mode that reacts to audio input, adding visual feedback that is independent of the key layout.

Ciri-ciri utama

  • 32-bit MCU delivers responsive input processing
  • 8M Flash stores custom profiles onboard
  • 8M RGB colours with per-key lighting control
  • Bluetooth 5.1 plus Type-C wired dual-mode connectivity
  • Hot-swappable Kailh sockets let you change switches without soldering

Spesifikasi

Key SwitchBlue Switch
Keyboard ColorWhite

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Will the GK21S connect via Bluetooth 5.1 to an older desktop that only has USB 2.0 ports?

Yes, the keyboard pairs over Bluetooth 5.1 independently of the USB port version; the Type-C cable is only needed for wired use or charging the 750 mAh battery.

How can I verify the 16.8 million colour RGB lighting and Blue Switch actuation are working correctly after assembly?

Plug the Type-C cable or pair via Bluetooth 5.1, then use the music-rhythm mode and the three programmable macro layers to confirm each key lights and registers.

Does the kit include keycaps and stabilisers, or must I buy them separately?

The kit supplies the hot-swappable PCB, Kailh sockets, plate-mount stabiliser support and Blue Switches; keycaps are not included and must be purchased separately.

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