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This PCI slot mounted USB splitter extends motherboard internal 9Pin USB2.0 header out to two accessible rear-panel USB ports. The standard full-height metal PCI backplate locks tightly into desktop expansion slots to avoid port wobble during frequent plugging/unplugging. Insulated cable minimizes signal interference inside cramped chassis space. It is an economical DIY solution to upgrade legacy desktops, repair broken case USB jacks or expand available rear connectivity for daily office and home PC use.