Sienoc USB 3.0 Type-A Female to Type A Female SuperSpeed Coupler Connector Color Blue - 2 Pack USB 3.0 Type A Female to Female Adapter Coupler Gender Changer Connector Backward compatible with USB 2.0 and 1.1 interface Combines two USB 3.0 male cables into a single, longer cable Size :4.5*1.9*1.2cm