1,Customizable Macro Programming: Featuring four customizable macro keys, you can tailor specific shortcuts or macro definition to suit your preferences or work demands. Whether tackling complex programming tasks or routine office operations, this feature provides unmatched flexibility. Easily personalize your settings using dedicated software from the programming software download address to significantly boost efficiency. 2,Dynamic RGB Lighting Effects: Equipped with vibrant RGB lighting effects, this 4 key mechanical keyboard not only enhances visual appeal but also allows users to adjust colors and modes according to their mood or environment. The RGB lighting supports various modes, accommodating different aesthetic preferences and providing a personalized experience. 3,Wired USB: This wired USB connected, no driver HID keyboard seamlessly integrates with multiple devices such as PCs, smartphones, and tablets. It offers plug and play convenience across platforms without the need for additional drivers. Enjoy consistent performance whether for Win, for OS X, or for Android systems. 4,Advanced Macro Capabilities: This 4 key gaming keyboard goes beyond basic key customization by supporting complex macro definitions. Users can record and store sequences of keyboard and mouse actions, including inserting delays between actions. Ideal for gamers and programmers, this feature greatly enhances automation in gaming or professional tasks. 5,Multi Layer Key Mapping: With the multifunctional S key, users can effortlessly switch between three different key value layers. Each key can be configured with different functions under each layer, embodying the design philosophy of compact size with large capacity. For instance, three physical keys can effectively act as nine independent keys, greatly enhancing space utilization and operational flexibility. Item Type: 4 Key Keypad Material: ABS Connection: Wired USB Switch: Blue mechanical switch Lighting Effect: RGB Compatible Devices: Universal for computers Keyboard and Mouse Function: Any single key or combination key of keyboard or mouse; mouse cursor, scroll wheel action String Function: Continuous output of letters or symbols, up to 38 characters Multimedia Function: Common multimedia functions such as volume up and down, play/pause, my computer, etc. Macro Definition Function: This function can set the combination actions of keyboard and mouse, and the actions can add delay. The recording function can be used to record keyboard and mouse actions One Click Open Function: One click open specified file, folder, web page, etc. Multi Function S key Explanation: Single click to switch key value layer, there are three layers of key value layer in total, each layer key value can be set with different functions, allowing three keys to have the function of nine keys customization (red indicator light represents the first layer, green light represents the second layer, blue light represents the third layer) 1 x 4 Key Keypad 1 x Data Cable 1 x Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store