KN104 KN85 KN17 Layout/Size 100% Full-size/ 17.52*5.55*1.65in Layout/Size 75% Compact Layout/ 13.68*5.51*1.77in Layout/Size 17 Keys Layout / 4.41*3.39*1.38in Connectivity USB‑C, 2.4GHz, Bluetooth 5.0 Connectivity USB‑C, 2.4GHz, Bluetooth 5.0 Connectivity Detachable Type-c Wired Programmable KN104 Software(WIN only) Programmable KN85 Software(WIN only) Programmable × Purpose Office, Data-heavy Work Purpose Writing& Typing, Gaming, Coding Purpose Speedsheets, Data Entry, Accounting Ideal Users Accountants& Finance Pros, Home Desktop Users, Traditional Typists Ideal Users Laptop Users, Gamers, Programmer, Minimalists Ideal Users Accountants& Finance Pros, Laptop Users, Compact Keyboard Owners What’s the dimensions? Weighing 1.98 lb, its compact 75% layout (13.68*5.51*1.77 inches) saves desk space by omitting the number pad. For a full-sized option, please refer to Kisnt KN104. How can get the software for KN85? The custom keyboard works seamlessly with both Windows and Mac, but programming is only supported in wired/ 2.4G wireless mode on Windows. You can download the driver from: How to adjust the RGB backlighting? 1. Shortcut keys for quick adjustments: FN+Insert = Switch 20 RGB lighting effects. FN+Delete= Backlight color switching. Brightness : FN+↑ /↓, Backlight speed: Fn+→/←. 2. The KN85 driver for advanced programmable lighting effects and patterns. Why does the keyboard fail to connect (or keep disconnecting) in wireless mode? Low battery- Make sure the battery is still active before further troubleshooting. Bluetooth compatibility- Bluetooth connectivity requires Windows 8 or later and only supports Bluetooth version 4.0 to 5.3. Is quiet to type on? It is not a silent keyboard, but be quieter than typical mechanical keyboards and delivers a satisfying "thocky" creamy sound instead of clicky noise.