1. USB conector 2. computer connector 3.certifications: ISO9001(2008), ISO9001(2000), ISO(14001 4.high precision ... .set tolerance (±0.002mm)2.terminal mold(pitch:0.4mm) 3.shell mold(tolerance +0.03,-0.00, T=0.5mm ... more information, please visit our website or contact us directly. USB 3.0 connectors shell