20Gbps (USB3.2 Gen 2X2): PCI-E card has a bandwidth of 20Gbps for fast data transfer. The actual speed of USB 3.2 on a single port and external drives is Perfect for file backup, video editing and data recovery Backwards compatible with USB 3.0 and USB 2.0 devices (Note: Thunderbolt 3 devices connected to this expansion card are only compatible with 10G rates.) Good compatibility: Compatible slot: PCIe x4 (3.0), PCIe x8, PCIe x16, compatible with Windows 8/10 / Linux core, no driver required. (Windows 7 is not supported.) 15PIN POWER SUPPLY CONNECTOR POWERFUL: With the SATA 15PIN power supply backup interface, you can connect the computer's power cord to get a strong power supply capacity that is suitable for most enclosure power supplies. No more worrying about problems adjusting the power supply. The power supply is sufficient and stable. PCI-E to USB3.1: Add a USB 3.2 Gen 2X2 Type-C port (20Gbps) to your PC or older desktop computer with PCIe equipment. Here you will find a cost-effective solution for adding 20Gbps connectivity to your computer. The card contains both standard and low profile mounts that can be installed on various PCs and servers with form factor. colour: black Material: plastic+metal Package Contents: 2 x Expansion Card 2 x low profile holder