1. 2A 2C USB Expansion Card – Adds 2 x USB C 3.0 and 2 x USB A 3.0 ports to a PCIe x1 slot. Supports connecting multiple devices simultaneously. 2. Fast and Efficient: USB 3.0 ports deliver transfer speeds up to 5Gbps, enabling quick file transfers for videos, photos, and more between USB devices and your computer. USB A 2.0 supports speeds up to 480Mbps, ideal for connecting digital cameras, scanners, joysticks, keyboards, mice, etc. 3. Wide Compatibility: This PCIe expansion card is compatible with PCIe 3.0, 2.0, and 1.0 motherboards. Supported operating systems include Windows 7, 8, 10, macOS, and Linux. Note: No driver is needed for Windows 10/8, macOS 10.9, or Linux. Windows 7 requires driver installation, which can be found on the included CD. 4. Easy Installation: Turn off your computer and remove the case cover. Locate an available PCIe slot. Insert the card into the PCI Express slot. Secure it with a screw.