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This 9Pin USB 2.0 header extension splitter cable is specially designed for computer motherboard internal expansion. It converts a single 9pin USB header into multiple output ports to meet extra internal USB device connection needs. The 30cm optimized length keeps chassis wiring tidy and avoids cable pulling or squeezing. Precise pin crimping ensures stable signal transmission, and the sturdy black cable shell offers excellent durability. Simple and tool-free installation, ideal for PC DIY, chassis modification, and internal hardware port expansion.