The PCE2PCE-NO7 PCI Express Riser Card USB 3.0 AWM is a port expansion card designed to add external USB 3.0 interfaces to a computer system with a PCI Express port. It allows users to easily enhance their computer's connectivity options by providing additional USB 3.0 ports for connecting various peripherals and accessories. The card is compatible with PCI Express slots and offers fast data transfer speeds using USB 3.0 technology, making it a practical choice for expanding the capabilities of a computer system.