Keymouse 109 series switch compatibility question

Hi Sangmoon. It is possible to swap the cherry keys to the newer punch-down system as the pins on the Main PCB are the same. If you were to do this, you would have to switch out all of the keys (including small button modules) to the newer system.

We don't recommend it as it is harder to replace keys (have to redo the entire wire if it breaks) and expensive, but it is doable.

Here are all of the parts you would need to purchase:
https://www.keymouse.com/keymouse-components/red-wire-10-pack x2
https://www.keymouse.com/keymouse-components/blue-wire-10-pack x2
https://www.keymouse.com/keymouse-components/cherry-key-modules-brown-5-pack-p x10
https://www.keymouse.com/keymouse-components/small-button-module-p x12
https://www.keymouse.com/keymouse-components/5m-small-button-module-p x6

We currently don't have any of the punch-down tools in stock so you would need to purchase one here:
https://www.digikey.com/en/products/detail/kyocera-avx/069175701601000/2103218

You can use our assembly guides for reference:
https://www.keymouse.com/keymouse-alpha-assembly-instructions
https://docs.google.com/document/d/1ngxh_1_2fMvgPgLYMg9_LufiaZ4VtGMNcgl6uC4TaCY/edit