Hot-swappable switches :Easily swap out switches without soldering, allowing for customization and easy maintenance. Wireless Bluetooth 2.4G connectivity :Connect to your device wirelessly via Bluetooth 2.4G, freeing up desk space and reducing cable clutter. RGB backlit gasket structure : gasket structure and RGB backlighting add of style to your keyboard, making it stand out from the crowd. Multifunctional keyboard :With 63 keys, this keyboard is perfect for multitasking and efficient data entry, making it perfect for and students alike. Driver download link: https://.mediafire.com/folder/meg5925ii9qd7 Our keyboard kit's FN key is a function key, and there is no specific response from a single point. If you test the software again and there is no response, it is normal because it is a function key and needs to be combined with other keys to reflect its function (the" menu" key also cannot be opened in some testing software, not a product issue). Our keyboard kit can switch between for- and systems. If your computer is a system, press alt but the test software shows the win key function. Don't panic, just switch the system switch to the corresponding system mode (there is a switch next to the type-c plug hole, or press FN+a/s to switch to the corresponding system). Number of key positions: 66 keys Macro function: Support Connection : Type-C Wired/Bluetooth, 2.4G Battery capacity: 3000mAH Attention: Product charging only needs to be completed by plugging in the computer. Do not plug in other fast charging devices to avoid damage. It's just a keyboard kit, without keycaps. The appearance depending on the batch, but it does not affect use. Colour:Black Material:ABS Package Contents: 1 x Mechanical Keyboard Kit1 x USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.