Feature:1. 4 PORT: Supports four 5Gbps maximum USB A ports with hot swap support for industrial cameras, VR systems, USB 3.0 NVME enclosures, live streaming devices, USB 3.0 SSD/HDD enclosures, USB 3.0 video adapters, and USB 3.0 universal docking stations.2. SELF POWERED TECHNOLOGY: Expansion card built in self powered technology eliminates the need to plug in any additional power cables from the desktop power supply unit, allowing each USB 3.0 port to receive 5V/2A 10W maximum (5V/8A 40W total) power directly from the motherboard for connecting high power USB 3.0 devices.3. SECURE CONNECTION: PCIE USB 3.0 card adds 4X electronic security fuses and 4X voltage regulator capacitors and 4X voltage regulator inductors to protect user data and USB 3.0 devices, ensuring a secure connection.4. COMPATIBLE SYSTEMS: For Windows 11, 10, 8.x (32/64 bit) and for Windows Server 2012, 2012R2, 2016, 2019, 2022 system plug and play. for Windows XP, Vista, 7 (32/64 bit) and for Windows Server 2003, 2003R2, 2008, 2008R2 (32/64 bit) systems require driver installation and are plug and play on most for Linux kernels.5. SLOT SUPPORT: PCIE X1 interface design for PCIE X1, X2, X4, X8, X16 slots, not for PCI slots. Based on PCIE 2.0 standard, compatible with PCIE 1.X, 2.X, 3.X, 4.X PCIE slots. The full height bracket mounted on this PCIE USB 3.0 expansion card is suitable for standard size (3U) PCs.Specification:Item Type: 4 Ports USB 3.0 PCI Express Expansion CardMaterial: PCBInterface Type: PCIE X1 (X4, X8, X16 are Applicable, Not Applicable to PCI Slot)Applicable Models: Conventional Desktop (Small Chassis Need to Be Equipped with a Small Gear Piece)Number of Expansion Interfaces: 4 USB 3.0Transfer Rate: 4x5GbpsPower Supply: Self PoweredSupport: Support Hot Swappable.Package List:1 x4 Ports USB 3.0 PCI Express Expansion CardNote:1. You must ensure that you have an empty PCIE X1 slot before purchasing a desktop computer. 2. Drivers must be installed on for Windows 7 (32/64 bit) and previous systems. 3. Thin brackets are not supported and are not applicable to slim (2U) PCs. 4. Please use USB 3.0 device to test the connection speed, otherwise maximum speed cannot be obtained5. Not supported for OS X