Features: 1.4 KEYS 1 KNOB: PC Keypad with knob allows users to perform more complex operations by adjusting the volume, screen brightness, or other related settings with the knob to enhance the user experience. 2.CUSTOMIZABLE MACRO PROGRAMMING: The keyboard supports customizable macro programming, which allows users to bind frequently used operations or specific commands to the keys to perform multi step operations with one key, improving work or gaming efficiency. 3.HOT SWAPPABLE: The keyboard supports hot swappable technology, which allows you to replace keycaps or switches at any time, eliminating the need to worry about the adaptability of the keyboard to different gaming or usage needs, and quickly adapting to a variety of scenarios. 4.BLUE SWITCH: Mechanical keyboard adopts blue switch design with distinctive touch, fast feedback and durability, which provides a strong competitive gaming experience by performing click and quick combo operations in games. 5.FLEXIBLE ARRANGEMENT: The keyboard adopts key and cable separation design, which allows users to arrange the keyboard lines more flexibly according to their own usage habits, reducing cable bunching and better organizing the desktop. specification:Item Type: Mini 4 Key Keypad with Knob Material: Acrylic Connection: Wired Connection (Keyboard Line Separation) Cable Length: Approx. 1meter / 3.28ft PackageList:1 x Mini4KeyKeypad 1 x Data Cable 1 x USBFlashDrive 1 x User Manual NoteThe list comes with a USB flash drive to read and copy the software directly to your computer.