Unfortunately, we do not have the buttons as spare parts on our website. However, you can obtain them from Logitech customer service: https://support.logi.com/hc/de-ch/requests/new?ticket_form_id=360000621393 Or if it is a damaged button, register a warranty claim on our website: https://helpcenter.galaxus.ch/hc/de/articles/360007333539-Mein-Produkt-ist-defekt-was-kann-ich-tun-#:~:text=Your%20product%20is%20broken%20or,come%20and%20inform%20you%20about%C3%BCber.

Thank you very much for your comment. We will gladly forward this internally to the responsible department and hope that this will be checked promptly.

According to research, the only difference is the keyboard layout.

I used it for windows too.

US oder ENG layout

CH is a mixture of German and French. The CH pictures here are unfortunately not representative and do not correspond to the actual CH keyboard layout.

Yes ! See The Logitech CRAFT Advanced Keyboard with Creative Input Dial https://blog.logitech.com/2017/08/31/introducing-new-flagship-keyboard-logitech-craft-advanced-keyboard-creative-input-dial/ «CRAFT features smart illumination with backlighting, detecting your hands and adjusting the lighting automatically depending on the room conditions. The keyboard is designed for comfort, with a full-size familiar layout, with each key engineered for efficiency, stability and precision. And with the touch of our Easy-SwitchTM button, you can switch between – and type on – any three connected devices, whether you are using a Windows® PC or Mac®.» Procedure: https://support.logitech.com/de_ch/product/craft/faq#link_Craft-keyboard-startup-and-connection «Start und Verbindungsaufbau der „Craft“-Tastatur» «Bluetooth Die „Craft“-Tastatur verfügt über drei Easy-Switch™-Tasten mit einer Bluetooth-Status-LED-Leuchte in der oberen linken Ecke. ….. P.S. Bluetooth Low Energy compatibility see Logitech website