USB3.0 expansion card: This expansion card is a PCI Express card with 2 super high-speed USB3.0 interfaces, which complies with PCI Express system specifications.^ Files can be transferred at a rate of up to 5Gbps when connected to USB3.0 peripherals.^ At the same time, it maintains compatibility with existing USB peripheral products, is compatible with a full range of USB peripherals such as USB2.0, 1.1, 1.0, supports USB hot-swapping and plug-and-play playback, and supports any USB device including U disk, USB external Hard disk, MP3, external optical drive, digital camera, camera, etc.^ The use is the same as the previous generation of USB products, there is no difference, you don't have to worry about more.^ Support the following data transfer rates: low speed (1.5Mbps) / full speed (12Mbps) / high speed transmission (480Mbps) / super high speed (5Gbps)