Applicable System The PCIE to USB 2.0 card adapter supports 98 ME 2000 2003 Vista, and supports MAS systems, not supporting for 10. Ports The expansion adapter card features 4 external USB 2.0 ports and 1 shared internal port to ensure simultaneous connection and operation of multiple devices. Multiple Devices Connection The expansion card converter allows the simultaneous connection of various USB interfaced devices such as keyboard, flash drive, printer, digital camera, scanner, and more to your computer. Wide Compatibility The expansion card allows for backward compatibility with USB1.0 and 1.1 devices, allowing you to connect additional USB 1.0, 1.1, or 2.0 peripherals to your desktop. Key Benefits Expands USB 2.0 capability on older systems via PCIE Supports multiple devices at once with 4 external ports plus 1 internal shared port Compatible with a wide range of USB devices including keyboard, storage, printers, cameras, scanners Backward compatible with USB 1.0/1.1 devices, enabling use of legacy peripherals Use Scenarios Upgrading an older desktop to support multiple USB peripherals without needing separate hubs Setting up a small office workstation with keyboard, mouse, flash drive, and printer connected through a single PCIE USB 2.0 expansion card Accessing legacy USB devices on systems that still require USB 1.0/1.1 compatibility