This adapter card can convert the PCIe interface on the motherboard to a USB3.2 Type-C high-speed data transmission interface, and the theoretical transmission speed can reach 20Gbps. Support one USB3.2 port. It is also backward compatible with USB3.2Gen2 devices.The speed of USB3.2Gen2x2 is twice that of USB3.2Gen1. It is specially manufactured to provide faster and higher data transfer rates for personal computers, consumer electronics and communication devices. Built with ASMedia ASM3242. Note: The card does not support DP Alt Mode or USB Power Delivery. Equipped with SATA 15 Pin power connect to power any USB devices from your PC power supply. It ensure stable power during high speed transmission. PCIe 3.0 x4 card fits in PCIe x4 or x8 or x16 slot. product features: Support PCI Express Gen-III x4,Base 3.1a specification; Compliant with PCI Express card electromechanical 2.0 specification, mini card electromechanical 1.2 specification; Compliant with PCI PCI bus power management interface specification revision 1.2, local bus specification revision 3.0; Integrated spread spectrum controller for PCI Express interface; Does not support reverse channel; Compliant with Universal Serial Bus 3.1 specification revision 1.0,Bus Specification Revision 2.0; Compliant with SCSI protocol revision 1.0 for USB connection; Support multiple input function; Support USB3.2 and USB2.0 link power management; Support control, batch, stream, interrupt, synchronous transmission type; Compliant with xHCI (Extensible Host Controller Interface) specification revision 1.1; 5V/3000mA power output with C-type port; C-type female connector, external USB3.2 interface and internal SATA power supply; Power input: 15-pin SATA CD-ROM type power connector; Support device remote wake-up function via USB keyboard or mouse; Support control, batch, stream, interrupt, synchronous transmission type; Colour:Black + Silver Material:PCB+metal Size:80x68mm Package Contents: 1 * PCI-e Gen 3 x4 Expansion Card Only the above package content, other products are not included. Note: Light 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.