Motherboard USB 3.0 19/20Pin to 2* USB A Connector Male to Female Adapter Header Support Chassis FrontProduct Detail: PH22C Motherboard USB 3.0 19/20PIN to left/right 3.0A female interface expansion good helper Multi-layer circuit board with integrated high-speed signal optimization technology USB 3.0 high-speed data signal, lossless transmission Which direction can be used PH22 Desktop PC built-in card high-speed USB 3.0 interface Standard USB 3.0 19P connector Designed with two 3MM holes for user's DIY. USB 3.0 high speed signal lossless transmission PH21 Desktop computer built-in high-speed USB 3.0 interface Dual-layer USB 3.0 connector Standard USB 3.0 19P connector USB 3.0 high speed signal lossless transmission