Features: The item is used to convert the available USB 3.0 header of a motherboard into a USB 3.1 header. Support: Compatible with all of common motherboards with USB 3.0 19 pin header.(Note: Does not work with USB 2.0 header.) Support systems: WINXP/WIN7/WIN8/WIN10 32/64BIT/MAC/Linux; Specification: Dimension(L*W*H): 25*24*10mm(0.98*0.94*0.4in)(approx), Gauge: premium high-performance black PCB, Data transfer speed is up to 10Gbps, plug and play(Do not need to install drivers.) Connector A (motherboard): USB 3.0 internal 19/20 pin motherboard male housing header, Connector B (front panel): USB 3.1 A-Key 20 pin front panel female header; Including: USB 3.0 to USB 3.1 motherboard adapter Standard Type *1pcs; Self-adhesive tape*1pcs; Note: 1. Must install the adapter step by step to avoid shorting pins and motherboard damage. 2. Please remove power cable and wait 10 seconds before installation.3.There are two types about the adapter including standard and reverse type. Please refer to the image 4th about how to choose the standard or reverse type.