1. USB Type-C and PD are expensive

　　O In order to detect, connect and negotiate communication, it seems more expensive to switch from USB 2.0 to USB-C. For basic USB-C functions, a state machine controller can be used. The market price of this controller is less than 20 cents. This will reduce cost, power consumption and PCB space. In addition, with the widespread adoption of USB-C, the price of controller ICs is also falling, and they are becoming more and more energy efficient. With the popularity of USB-C, the price of implementation is falling. The cost of including a USB-C socket and controller in the system is less than 20 cents.

　　2. All Type-C ports have the same function

　　O Although it is a universal connector, the actual characteristics of the USB-C port may be very different. The port of the travel adapter only charges the device, and the port of the wearable device usually only accepts charging. The ports of dual-role devices such as laptops can both charge and accept charging. The power level limit of the standard Type-C port is 15W. If the PD protocol is implemented, it can be as high as 100W. In addition, the data communication of some ports can be as high as USB Super Speed Gen 2 10Gbps. Other features may include a display port or support for Thunderbolt.

　　3. All Type-C cables are the same

　　O Although all USB-C cables have the same pin arrangement and can be plugged into any USB-C port, it does not necessarily mean that their electrical characteristics and features are the same. The standard cable has a rated current of 3A and a length of less than 4 meters. Cables shorter than 2 meters or need to support 3-5A need an electronic marking IC, namely e-marker. The cable may also be "full-featured", for example, supporting up to 4K HD video. As mentioned above, a full-featured cable may actually have more wires, allowing additional bandwidth. The Type-C specification enables designers to use only the features required by their ports, thereby reducing complexity and cost. As the market matures, more and more solutions have been optimized for a given market demand.

　　4. USB Type-C is another cable that needs to be purchased

　　O Although USB-C cables are unique, the adoption rate of USB-C form factor is high, and USB-C cables are becoming more and more common. The trend is that this cable will eventually become the cable consumers need. If the same cable can be used to charge PCs, phones and any wearable devices from any charger, the number of cables required by consumers will eventually be reduced.

　　 5. Type-C cable is just an interface different from Type-A and Type-B

　　O Type-C using PD is far superior to Type-A and Type-B in terms of power and data rate. Although the power capability of Type-A and Type-B BC 1.2 has been developed to as high as 7.5W, USB-C PD can negotiate power up to 100W. USB SS Gen 1 has a data rate of 5Gbps, while Gen 2 has a data rate of 10Gbps. Recent updates also support the simultaneous use of Tx and Rx lines, further doubling the effective data rate.

　　6. Type-C cable is only used for data and charging small electronic products

　　 USB-C is of course universal. It can not only power phones and small wearable devices, but also power PCs, home appliances, and even industrial devices with a power rating of less than 100W.

　　7. I still need 3.5mm jack to listen to music

　　O This is not a problem. USB-C supports audio acquisition based on connectors. The USB-C cable has dedicated D+/D- pins to support audio signals. The SBU pin can also be used for microphone and ground signals. Some headset manufacturers are developing headsets that use USB-C connectors, and many manufacturers are developing dongles. The dongle is a small adapter with a 3.5mm jack on one end and a USB-C on the other end, allowing consumers to continue to use their favorite 3.5mm headphones. Although the sound quality may be degraded due to the installation of the dongle, many consumers choose this cheap option instead of replacing the headset immediately.

　　 8. USB-C no longer supports analog audio

　　O Many people think that if you transfer via USB-C, all audio must be digital. This is not the case. Many electronic platform designers will continue to use analog audio. There is a provision in the USB specification that if the system uses analog audio, it must also support digital audio.

        9. I can't charge and listen to music at the same time

　　O Although USB-C has very diverse functions, it can charge, transfer data, and listen to audio, but some people still find it difficult to use because the device has only one port. The initial assumption is that the USB-C port can only support one function. However, the USB-C specification stipulates that multiple functions can be performed on the same port at the same time. The USB-C specification provides for allowing accessory support for this purpose. Consumers can purchase a dongle with USB-C input and multiple outputs to charge, transfer data and listen to audio at the same time.