Key benefits Expands a single 19pin USB 3.0 motherboard header into two 9pin outputs so you can connect more RGB accessories, cooling devices, and sensors without changing your board. Keeps signals stable with durable conductive elements, reducing dropouts and enabling reliable fanspeed reporting and responsive RGB control. Plugandplay design requires no drivers on standard 19pin motherboard ports, making installation quick and predictable for system builders and upgraders. What it does Converts one 19pin USB 3.0 motherboard header into two 9pin outputs, providing flexible port splitting for RGB controllers, fan hubs, and related peripherals. Supports watercooling controllers, RGB lighting effects, fan sensors, and—when combined with a suitable adapter—additional internal USB 2.0 connections. Key features and attributes Function: 19pin input to dual 9pin outputs for expanded internal connectivity. Compatibility: Designed for mainstream motherboards with a 19pin USB 3.0 header. Works with RGB fans, liquidcooling controller boards, fan sensor modules, and devices that accept 9pin internal headers. Performance: Durable conductive elements ensure steady signal transfer for consistent data, dependable fanspeed analysis, and responsive RGB control. Installation: Compact, plugandplay connector that operates without drivers on supported motherboard ports. Build: Robust connectors and wiring engineered for stable electrical contact and repeated installations. How it solves common problems Limited headers: Lets you use additional RGB accessories and cooling components when your motherboard has only one 19pin header. Unreliable signals: Improved conductive components reduce signal loss and intermittent behavior common with splitters. Complex setups: Eliminates the need for extra controller cards or multiple adapters by providing two accessible 9pin outputs from one header. Typical applications Custom watercooled PC: Connect a pump controller and addressable RGB strip to the same 19pin header while keeping accurate pump/fan telemetry and synchronized lighting. Multifan RGB build: Split one motherboard header to power and control two fan hubs or RGB controllers in a midtower or fulltower case. Internal accessory expansion: Use with a 19pintodouble9pin adapter arrangement to add internal USB 2.0powered devices or additional sensor modules in compact builds. What to expect during install Plug the adapter into the motherboard's 19pin USB 3.0 header, then attach your 9pincompatible devices to the two output connectors. No drivers required on standard 19pin ports; check device manuals for any additional software needed for RGB or fan control. Verify pin alignment and secure connections to avoid bent pins or intermittent contact. Compatibility note Intended for mainstream motherboards with a 19pin USB 3.0 header and devices that accept 9pin internal connections. Confirm connector types on your devices before . Simple, reliable internal port splitting that helps you connect more RGB and cooling hardware without introducing extra software or complicated wiring.