Description: brand new and high quality. Feature: Made of high-quality metal material, durable and sturdy, strong anti-inference capacity. Dual USB 3.1 GEN2 10Gbps Type C interface, high performance and speed. It can be matched with USB3.1 to NVME hard disk for case, with the transmission speed up to 1080M/S. Support USB 3.1 devices,backwards for USB 3.0, 2.0 and 1.1. The 15-pin SATA power connector supplies power to USB-C enabled devices. The PCI-E card is equipped with 10Gbps bandwidth, which ensures fast data transmission, real speed of USB3.1 for individual port. Plug and for play and hot swapping capability. Built-in over current for protection and short circuit for protection on each USB port. Supports 10Gbps PCI-E bus with full duplex channel. Support Systems: for Win 7/8/10 32/64Bit/for Mac/for Linux. Expansion Card only, other accessories demo in the picture is not included! Specifications: Item Type: Expansion Card Material: Plastic+Metal Size: 12x8.5x2cm/4.7x3.3x0.7in Color: Black Interface: dual Type C interface Support Systems: for Win 7/8/10 32/64Bit/for Mac/for Linux Quantity: 1 Pc Note: Transition: 1cm=10mm=0.39inch Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 x Expansion Card