At present, USB data cables are more and more widely used, easy to carry, and data transmission is fast and stable. USB data cables are widely used and can transmit data conveniently, quickly and stably, and support various types of computers. The disadvantage is that the IC price is slightly higher, and some data cables do not support the flashing function.

USB is used to standardize the connection and communication between computers and external devices. It is an external bus standard widely used in the PC field. The USB interface supports the plug-and-play and hot-swap functions of the device. With the rapid development of computer hardware, the application of USB has improved the data transmission speed between external devices. The benefit to users from the increased speed is that they can use higher-performance external devices, such as USB 2.0 scanners, which can scan a 4M picture in only about 0.1 seconds, greatly improving work efficiency. Depending on the interface and data cable, USB supports devices such as scanners, printers, keyboards, mice, cameras, USB flash drives, mobile phones, MP3 players, mobile hard drives, digital cameras, external optical floppy drives, USB network cards, ADSL modems, etc. electronic product.

USB data cable categories: 1. Ordinary USB data cable. There is no central control chip, you have to plug in your mobile phone and computer to identify the line, and the price is relatively cheap. USB data cables with IC and central control chip. Common chip models are 2303, 2101, and 3116. The cable can be identified without plugging in a mobile phone or computer. Since the price of an IC is more than 10 yuan, the price is more expensive than one without IC. The working principle of the data cable with chip is USB to COM, which converts the USB interface into a serial port and displays it on the computer. 2. Dedicated USB data cable. Non-popular chips, special chips such as DKU-5, CA-42, DCU-11, etc. Don't think that the quality is good if there is an IC, but the quality is poor if there is no IC. In fact, production with or without IC is based on applicable models of mobile phones.

USB2.0 and 3.0 data cables: USB3.0 is a USB3.0 promotion group composed of industry giants such as Intel, Microsoft, HP, Texas Instruments, NEC, ST-NXP and other industry giants. On November 18, 2008, the USB 3.0 standard was officially completed and publish it publicly. USB3.0 can be widely used in PC peripherals and consumer electronics products. Its standard provides ten times the transmission speed of USB 2.0 and higher energy saving efficiency. The theoretical bandwidth of the USB3.0 interface has been increased to 5Gbps, while the theoretical bandwidth of USB2.0 is 480Mbps. After all high-speed USB2.0 devices are brought to USB3.0, the performance will be better.

The main differences between USB2.0 and 3.0 data cables: 1. The data bandwidth of USB3.0 is ten times that of USB2.0, which can reach 5Gb/s (480MB/s), and the synchronous transmission bandwidth can also reach 384MB/s, which is also USB One of the main differences between 3.0 and 2.0; 2. Low power consumption, the data transmission capacity is about 25% lower than USB2.0 at 20MB/s; 3. USB3.0 is more energy-saving than 2.0. For devices that are waiting temporarily, you can use the power saving mode; 4. USB3.0 can provide more power through the cable; 5. USB3.0 is backward compatible and supports USB2.0 devices, but USB2.0 does not support USB3 .0.