How do I differentiate the print specifications on the USB cable?

The specification of the USB connector has different meanings in different states. For example: In the United States, it is AWG is the United States of the cable standard (American Wire gauge), high-speed signal transmission, transmission line skin effect is the biggest difference.

Maximum Skin frequency:

26AWG 107KHz

30AWG 270KHz

For ordinary users, 30AWG means low power consumption under the same transmission speed,

For ordinary users, the data rate is hard drive and OS decided to meet the normal use, there is no difference. Without spending money, of course, the higher the AWG the better. If it means the relationship between the two:

In addition, some shoddy network wires are printed with cm, CMR, FT4, and even CMP. These content is actually a flame retardant grade UL mark, just use fire to burn the product to know, cannot ignite that is really acura, if can ignite, but after leaving the flame can extinguish immediately that is the top grade; If you can not extinguish it is a fake, often hit the wire on the 24AWG or 22AWG, What does that mean?

The thickness of the industry line diameter is expressed by the number (AWG), the smaller the size of the larger the line diameter, the more the current can be loaded, on the contrary, the smaller the line diameter, the less resistance to electricity flow. For example: 12AWG of resistance to the flow is 20A, the maximum power is 2200W, and 18AWG of the resistance of the electricity flow is 7 A, the maximum power is 770W.

Why is the smaller the number of AWG numbers the larger the diameter? If so, you will understand that the amount of the same AWG can be plugged under a fixed cross-sectional area, such as 11#awg 11, and 15#AWG can be plugged into 15, the natural 15#awg of the unit line diameter is smaller. Of course the price is not the same.

The diameter value of a single conductor or group conductor "positive or negative" values (gauge) are measured in circles or square centimeters (mm2), square centimeters are not commonly used in measuring line diameter values, due to the improper, due to the general majority of the conductor form, including rectangles and other strange shapes. So we take all the measurements in Round square centimeter (c/m) as the reference value.