The Alfais 4899 PCI-E 7 Port USB 3.0 is a hardware device that allows you to add seven additional USB 3.0 ports to your computer. It is designed to fit into a PCI-E slot on your motherboard and provides high-speed data transfer rates of up to 5Gbps per port. Equipped with advanced power management technology to ensure the stability and safety of the connected devices. Additionally, the Alfais 4899 features a built-in surge protection mechanism that safeguards your computer and peripherals from sudden power surges or electrical spikes.