Compliant with PCI- specification version 2.0Compliant with USB3.0 SuperSpeed specification version 1.0Compliant with xHCI specification version 1.0Main control chip: Renesas uPD720201 chipsetThe maximum transmission rate is as high as 5Gbps, which is much higher than 480Mb/s of USB2.0, up to 10 timesBackward compatible with USB2.0, USB1.1, USB1.0Transmission rate: 5000/480/12/1.5MbpsUSB output: up to 5V 1.5A (increased current type)Support USB hot plug functionSupport Windows XP/2003/Vista/win7/win8/2003/10 and above systems.19-pin USB 3.0 header: add 2 internal USB 3.0 19-pin ports to the desktop computer. Expandable with 4 USB-A ports.[System Compatibility]Drivers must be installed on systems with Windows XP, Vista, 7 (32/64-bit) and Windows Server 2003, 2003R2, 2008, 2008R2. No drivers on Windows 8.0, 8.1, 10, 11 (32/64bit) and Windows Server 2012, 2012R2, 2016, 2019, 2022 systems. Not available for OS.USB 3.2 GEN1: Up to 5 Gbps transfer rate. USB 3.0 is backwards compatible with USB 2.0/1.1/1.0 devices.Safe and stable: Each interface is equipped with an voltage regulator capacitor and an interface protection insurance that can the stable supply of each interface.color:BlackMaterial:Plastic + MetalPackage Contents:1 x Expansion Card1 x Low Profile BracketOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.