Mainboard USB 3.0 19Pin Header Switch To USB 3.0 Dual Port Bezel USB 3.0 Female Hub Extension 82cm Dual Cable Twisted-pair data line (impedance matching): minimize crosstalk signal crossing the data lines Provide up 5Gbp / s ultra-fast data transfer rates Flexible PVC jacket: flexible difficult to break, durable Overmolding and difficult to break, durable, ensure error-free data transmission Intima shield: help reduce signal interference and ensure the current USB specifications and 100% compatible,Weave copper mesh and aluminum foil double shield