Motherboard 20 Pin Header Connector to 2 USB3.0 Port Adapter Card Expands two USB3.0 A Female Ports from your 19pin USB3.0 pin header. Super Speed usb 3.0 cable 5Gbps Data Transfer Rate Super Speed USB3.0 Delivers up to 10x USB 2.0's Transmission Rate Backward compatible with USB1.1&2.0 Super speed USB brings significant performance enhancements to ubiquitous USB standard, while remaining compatible with billions of USB enabled devices currently deployed in market