1. 4-Port USB Expansion: The USB 3.0 PCIe card adds four USB ports (two USB-A and two USB-C) to a desktop computer via a PCI Express x1 interface. 2. Includes a 15-pin SATA power supply interface. 3. Data Safety and Stability: Features the NEC D720201 USB 3.0 host controller. 4. Wide Compatibility: Compatible with PCIe 3.0, PCIe 2.0, and PCIe 1.0 motherboards. Supports Windows XP, 7, 8, 10, 11, and Linux operating systems. 5. Easy to Install: Measures 12 x 6.7 x 6.5 cm and is built on a PCB substrate for straightforward installation and use. Specifications: 1. Complies with PCI Express Base Specification Revision 2.0 2. Gen1 compliant with the Universal Serial Bus 3.1 specification 3. Compliant with USB Attached SCSI Protocol Revision 1.0 4. Compatible with xHCI (eXtensible Host Controller Interface) Specification Revision 1.0 5. Supports simultaneous operation of multiple USB 3.2, 3.1, 3.0, 2.0, and 1.1 devices 6. Supports USB data transfer rates of 5 Gbps, 480 Mbps, 12 Mbps, and 1.5 Mbps 7. Built-in SATA power interface; USB power output: up to 5 V / 1.5 A Parameters: Product Name: USB-A + USB-C Expansion Card Interface: PCI Express x1 (backward compatible with x4, x8, x16 slots) Interface Speed: USB 3.2 Gen1 (5 Gbps) Supported Chassis: 2U and 4U chassis Controller Chip: D720201 Operating Systems Supported: Windows XP, 7, 8, 10, 11, Linux Driver Support: Driver-free operation on Windows 10 and later Notes: 1. USB interfaces comply with the USB 3.2 Gen1 (5 Gbps) standard, also known as USB 3.0. 2. The expansion card includes a DC-DC step-down IC and requires connection to a SATA power source.