Description: This USB motherboard header, can be installed into a standard PC slot and will be connected internally to any USB 3.0 19 pin header socket. It expands your system by two external USB 3.0 ports and enables the connection of different USB devices, e.g. card reader, HDD, USB hubs, etc. Features: 1. Standard USB3.0 19PIN interface. 2. Two USB3.0 interfaces connect different devices, such as card reader, HDD, USB hubs, etc. 3. Ultra-thin design and the interfaces do not interfere with each other, to avoid signal interference. 4. Lossless transmission of USB high-speed signals. 5. 2 3mm holes to facilitate users to connect different devices according to their own needs. Specifications: Condition: 100% Brand New Color: Black Quantity: 5 Size: 3.5 * 3.8 cm / 1.4 * 1.5 in Weight: Approx. 37g Package List: 5 * USB Motherboard Connector 1、Standard USB3.0 19PIN interface 2、Two USB3.0 interfaces connect different devices, such as card reader, HDD, USB hubs, etc 3、Ultra-thin design and the interfaces do not interfere with each other, to avoid signal interference 4、Lossless transmission of USB high-speed signals 5、2 3mm holes to facilitate users to connect different devices according to their own needs