USB-IF certification introduction
USB Standard Type
USB2.0 standard types: USB A male, A female; USB B male, B female; Mini USB male and female; Micro USB male and female;
USB3.0 standard types: USB A male, A female; USB B male, B female; Micro USB male and female;
USB3.1 standard type: Type C male, Type C female;
USB2.0 standard types: USB A to B, USB to MiniB, USB A to MicroB
USB 3.0 standard types: USB A to A, USB to B, USB A to MicroB
USB3.1 Standard Type: Type C to Type C
USB-IF certification test content
The certification tests for USB peripheral devices can be divided into three categories. The first is electrical characteristics testing to verify the signal quality of the product under different application architectures. This is followed by a functional test to check higher-level product details, such as the level of support required by the standard and device enumeration capabilities. Finally, the product interoperability test is used to determine the interaction between the product under test and other USB devices.
Why USB certification
USB certification is generally based on client requirements. Generally, USB functions used on high-end products must apply for USB certification. After USB products apply for association certification, they can use the USB logo and obtain the TID number of the USB product. For USB products to use this logo and have a TID number, they must first apply to the USB Association to become their members, and they can only apply for component certification after having membership.