一般的 USB 3.0 Cable 送認證的測試須通過儀器下列測試
.-USB3.0 NA Insertion Loss
.-USB3.0 NA NEXT
.-USB2.0 to USB3.0 NA FEXT
.-USB3.0 NA Differential to Common Conversion
.-USB2.0 NA Insertion Loss
.-USB2.0 to USB3.0 NA NEXT
.-USB3 Super High Speed Cable Impedance
.-USB3.0 Super High Speed Mated Impedance
.-USB3.0 Super High Speed Delay
.-USB3.0 Super High Speed Intra Pair Skew
.-USB2.0 High Speed Cable Impedance
.-USB2.0 High Speed Delay
.-USB2.0 High Speed Intra Pair Skew
只要測試不符規範,傳輸速度必降低!
並非市售的USB 裝置都一定符合規範!