What are the categories of USB data cables?

USB data cable with IC

With a central control chip, ordinary chip models 2303, 2101, 3116, without inserting the phone computer will also recognize the line, because the price of an IC is more than 10 yuan, so the price is a little more expensive than without IC. The working principle of the data line with a chip is USB to COM, the USB interface into a serial port on the computer display.

Typical models: Samsung E638 series, D418 series; NEC N610 series; Siemens 25 series, 55 series; Sony Ericsson cell phone data line; Panasonic cell phone data line; Lenovo cell phone data line and so on.

Special USB data cable

Non-ordinary popular chips, dedicated special models of chips such as: DKU-5, CA-42, DCU-11, etc..

Note: Do not be mistaken that the quality with IC is good, without IC quality is poor, the actual with or without IC is based on the production of cell phones to the applicable model.

From manufacturers to classification

The original factory original; domestic brands; domestic unlicensed.

1, the original original: produced directly by the phone manufacturer, or provide materials commissioned by a manufacturer OEM, marked with the phone's brand, the best quality, the most expensive.

2, domestic brand: data line has its own brand, in addition to the manufacturer's address and phone number printed on the packaging, more formal, good quality, low prices, such as Dingli USB data line data line.

3, no brand: no identification manufacturers and brands. This type of data cable is divided into 2 categories, the first is the professional export of data lines, foreigners do not need to paste the Chinese brand, the quality of this line is very good, the price is also lower than the national brand line, the most cost-effective; the second is a miscellaneous line, the price is very low, the quality is very poor, you can be careful to buy, please choose to more reputable sellers to buy.

USB2.0 and 3.0

USB3.0 is by Intel, Microsoft, HP, Texas Instruments, NEC, ST-NXP and other industry giants formed USB3.0 promotion group announced on November 18, 2008 has been officially completed and publicly released USB3.0 standard. USB3.0 standard provides ten times the transfer speed and higher energy efficiency than USB 2.0, can be widely used in PC peripherals and consumer electronics. The theoretical bandwidth of the USB3.0 interface is increased to 5Gbps, while the theoretical bandwidth of USB2.0 is 480Mbps. all high-speed USB2.0 devices get better performance with USB3.0.

USB2.0 data cable

Main differences.

1. USB3.0 data bandwidth is ten times that of USB2.0 and can reach 5Gb/s (480MB/s), synchronous transfer bandwidth can also reach 384MB/s, which is one of the main differences between USB3.0 and 2.0;

2. low power consumption (approximately 25% lower power consumption than USB2.0 at 20MB/s data transfer volume);

3. USB3.0 is more energy efficient than 2.0 and can be used in power saving mode for devices that are temporarily on hold;

4. USB3.0 can provide more power through the cable (2.5W to 4.5W);

5. USB3.0 is backward compatible and supports USB2.0 devices, but USB2.0 cannot support USB3.0.

USB3.0 cables

The increasing power of USB cables means that people can use them to charge their laptops.

Intel and allies are developing USB Power Delivery (USB PD) technology. USB 2.0 can deliver 2.5 watts of power, USB 3.0 is 4.5 watts, USB BC cables can deliver 7.5 watts of power, and USB PD can support 10 watts for mobile devices, 18 watts for tablet devices and most peripherals, 36 watts for thin client devices, a bit larger peripherals, 60-watt laptops, docking stations, and 100-watt workstations.

The advent of USB PD has simplified the charging process for devices such as phones and tablets. Intel engineers Sanders and Dunstan said: "By supporting tablets, laptops and other devices, it makes the range of charging much wider.