Why do some USB-C cables not work?

USB-C ports have become increasingly popular in recent years due to their versatility and portability. They offer faster data transfer speeds, higher power delivery, and support for connecting multiple devices through a single port. However, many users experience issues with their USB-C cables, causing them to not work properly or even damage their devices. In this article, we'll explain some common reasons why USB-C cables may not work properly, as well as how to maintain your USB-C cables.

 Reasons why USB-C cables don't work properly:

1. Cable damage

USB-C cables are frequently bent and twisted in daily use. Over time, even if they are sturdy, their internal wires (especially at the ends of the cable) may wear out or break. Such internal damage is not easy to detect with the naked eye, but it will hinder charging.

If your charging cable was working well before and now suddenly fails, it is likely caused by physical wear and tear. Try changing the cable to see if charging can be restored. If the new cable works, then the old cable should be replaced.

2. Incompatible specifications

The USB-C interface supports multiple protocols (such as USB 2.0/3.0/3.1/3.2/4) and power supply functions. Although most USB-C cables can take care of both charging and data transmission, some devices require specific cables for fast charging or high-speed transmission. Using an incompatible cable may result in slow charging or even failure to connect.

3. USB power mismatch

One of the highlights of USB-C cables is their powerful power supply capabilities. However, not all USB-C charging cables support the same power supply standards. Some USB-C charging cables may not charge your device, or may charge slowly if they don't provide enough power. Always check the power specifications of the cable to ensure it's compatible with your device.

4. USB-C data transmission capacity differences

Although USB-C charging cables are designed for high-speed data transmission, their performance varies. If the data transmission speed does not meet expectations, the problem may be with the cable itself. The speed differences supported by different USB protocols are as follows:

Special note: Some USB-C charging cables only provide power and do not support data transfer.

5. Damaged device port

If you have ruled out cable issues but the connection still fails, consider the possibility that the device's USB-C port is damaged. Even if the cable is functioning properly, a damaged or faulty port can cause the connection to fail. In this case, it is recommended not to handle it yourself. Contacting a professional repairman is a safer and more effective solution.

6. Software and firmware compatibility

Sometimes, the problem may not be with the Type C cable itself, but with the device it is connected to. Please make sure your device has the latest software updates and firmware versions installed to ensure compatibility.

Practical tips for maintaining USB-C cables:

Proper maintenance of USB-C cables ensures their longevity and reliable performance. Here are some important tips to help you keep your USB cables in good condition:

1. Avoid excessive twisting and bending

Try to avoid applying excessive pressure to the cable by crossing or folding it. This can cause the internal cable strength to decrease and affect the connection performance, leading to connection problems or even complete damage. When placing the cable, make sure the bend angle is gentle and smooth.

2. Use cable protectors

Buy cable protectors, these small accessories can be placed on the end of the cable to prevent wear and reduce stress on the connector.

3. Clean the cable regularly

Dust easily accumulates on the cable and connector interface. Clean the cable body with a dry cloth regularly, and clean the connector groove carefully with a soft brush to prevent dirt from affecting conductivity.

4. Eliminate incorrect unplugging

Never unplug the USB-C cable by pulling the cable body! The correct operation is to pull out the plug by hand. Long-term pulling on the cable body will cause the welding point between the cable and the connector to break, causing permanent damage.

5. Use high-quality cables

Buy high-quality USB data cables to ensure durability and reliable performance. Cheap cables can wear out quickly and fail to provide consistent power. Consider our new USB-C to USB-C 100W cable, which features a super-premium aluminum housing, solid metal connectors, and durable PVC sheath, making it highly resistant to twisting and abrasion. Choosing a high-quality cable reduces the risk of damage and ensures your device gets a stable, efficient charge.