Description: 【PCIE Expansion Card】: It adopts USB3.2 main control chip, which is also the third generation product D720202 main control, which can support the expansion card for LINUX system. 【Mini PCIE to USB3.2 19 Pin Expansion Card】: When in use, it needs to be plugged into a SATA power supply or a small 4PIN port to work. 【Mini PCIE to Dual Ports USB3.2 Front Pin Header】: The expansion card uses a high quality capacitor, which greatly ensures the stability of the USB power supply. 【Maximum Transmission Rate】: up to 5Gbps, much higher than 480Mb/s of USB2.0, up to 10 times; backward compatible with USB2.0, USB1.1, USB1.0. Transmission rate, 5000/480/12/1.5Mbps. 【High Performance】: Expansion card support USB Hot Plug Function, support for Windows XP/2003 / for Vista/for win7/for win8/2003 and above systems, etc. Specification: Material: PCB material Product Size: 85mmx60mmx40mm Package Includes: 1 PCIE Expansion Card Note: Please allow slightly errors due to manual measurement and different monitors.