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How to choose the Type-C data cable?

2019-10-14 0:32:32

1. Today we are talking about the USB Type-C interface type that has been widely adopted by the mobile phone industry. Because of its small size, it can be used for both positive and negative insertion. Through the Type-C data line that meets certain standards, we can let  Notebooks connect high-performance graphics cards, replace HDMI and VGA cable-connected displays with Type-C data lines, etc., and more and more people will see Type-C interfaces in electronic devices, so the most likely data line for everyone to buy in the future is  The data line of the Type-C interface.

2, two functions of the USB data cable USB data cable two major functions: one is data transmission; the second is power charging.

The USB interface type does not determine the charging and data transfer capabilities.

Data Transfer: USB is a bus architecture developed by Intel Corporation. Its standard has experienced USB1.0, USB1.1, USB2.0, USB3.0, USB3.1 and so on.  Among them, USB2.0 supports a transmission rate of 480Mbps, USB3.0 supports a transmission rate of 5.0Gbps, and USB3.1 supports a transmission rate of 10.0Gbps.  Note that Mbps is not equal to MB/S, and the relationship is 1 Mbps = 0.125 MB/S.  That is to say, the transmission rate of USB2.0 can theoretically reach 60MB/S, and the transmission rate of USB3.1 can theoretically reach 1.25GB/S.  It is also because USB3.1 has such an amazing transmission speed, because it is most likely or has gradually become the transmission standard of the future.

Whether to support high-speed transmission, mainly to see if it supports USB3.0 and above. Charging media: All major mobile phone manufacturers have launched mobile phones with fast charging function. Whether mobile phones can charge quickly depends on whether the charging head, data cable and mobile phone meet the same or compatible fast charging standard. The three must cooperate.  Work is indispensable.  Due to the different fast charging schemes, the US organization has introduced the USB PD protocol specification fast charging standard. The USB-PD 3.0 protocol already includes Qualcomm QC 3.0 and 4.0, Huawei's SCP and FCP, MTK's PE3.0 and PE2.  0 , and VOOC () of OPPO.  It should be noted here that the USB PD protocol specifies that the interface type is Type-C.  In other words, the charging line supporting the PD protocol must be Type-C, and the Type-C data line does not necessarily support PD fast charging.  The charger supporting PD3.0 protocol has a maximum output power of 100W.  In addition, the charging cable supporting the PD3.0 protocol can support the transmission rate of USB 3.1, and can only support the transmission rate of USB2.0.

3. USB-C cable price Let's take a look at the promotional points and prices of different manufacturers (USB-C to USB-C) data lines: The basic data cable is actually a data cable that supports the PD Fast Charge Protocol and the USB2.0 transmission standard (not publicized and 480Mbps are USB2.0). The price is USD5.00 (except for Apple), while supporting PD fast charge.  Protocol and USB3.0 transmission standard data line, the price will increase exponentially, so in the future when you purchase the data line, you need to purchase according to actual needs, not the more expensive the better.

4. The data line is not as expensive as possible, and it is most important to meet the demand. E-mark: All full-featured USB Type-C to USB Type-C cables should be packaged. Non-full-featured devices are not necessarily packaged.  The chip can provide information such as power transmission capability and data transmission capability to the device. Thurderbolt3: Apple's interface transmission specification based on USB Type-C interface type, compatible with Type-C interface devices, and like the full-featured Tpye-C interface, can support display output through transfer device or direct connection  , external graphics card and other operations.  Can be understood as Apple's own set of higher than (transmission rate and price 4 times) USB3.1.

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