Razer gaming keypad with customizable RGB keys. Features ergonomic design and programmable controls. The "Pro" in Razer Tartarus Pro signifies its advanced features, particularly its use of Razer Analog Optical Switches. Key "Pro" features: Analog Optical Switches: Unlike traditional keypads that register a simple on/off input, the Razer Tartarus Pro's Analog Optical Switches can detect varying levels of pressure, allowing for nuanced control similar to an analog stick on a controller. This enables features like: Adjustable Actuation: Users can customize the actuation point for different key presses. Dual-Function Macros: A single key can perform two different functions based on how deeply it's pressed. Enhanced Customization: It offers 32 fully programmable keys for extensive macro and keybinding customization. Razer Chroma RGB: Features customizable RGB lighting for personalization.