Product Description: USB 3.0 PCIe Card Four Port Expansion Adapter for Windows, OS, and Linux Systems PH63 Enhance your computer's connectivity with the USB 3.0 PCIe Card, a versatile expansion adapter designed to provide four additional USB 3.0 ports. Perfect for users who need to connect multiple devices simultaneously, this adapter is compatible with a variety of operating systems, including Windows, OS, and Linux. Key Features: High-Performance Chip: Equipped with the Taiwan VL805 USB 3.0 main control chip, this PCIe card ensures stable operation and improved performance. Its design allows for seamless compatibility with standard PCI-E X1 slots, while also being compatible with X4, X8, and X16 slots, making it a flexible choice for various setups. Expanded Connectivity: This adapter provides two additional USB 3.0 ports, allowing you to connect more external devices such as printers, external hard drives, and other peripherals. Enjoy the convenience of expanding your system's capabilities without hassle. Hot Plug Support: The plug-and-play functionality of this PCIe card means you can quickly and easily expand your USB ports. Connect up to two devices simultaneously without needing to restart your computer, making it ideal for multitasking and efficient workflow. Reliable Power Supply: Featuring a SATA 15-pin power supply, this adapter can easily support large-capacity devices and facilitate the transfer of large data files. This ensures that your devices receive the power they need for optimal performance. Enhanced Stability: The use of full capacitance in this product significantly boosts its anti-interference capabilities, resulting in a more stable data transmission experience. You can trust that your data transfers will be smooth and reliable, even when using multiple devices at once. Upgrade your computer's functionality with the USB 3.0 PCIe Card Four Port Expansion Adapter. Its combination of high-performance components, user-friendly design, and broad compatibility makes it an essential accessory for anyone looking to enhance their computing experience. Whether for home, office, or professional use, this adapter is your solution for efficient and reliable connectivity.