Thanks to USB Type-C with up to 10Gbps data transfer speed and a maximum 100W power transfer speed, this interface is used by more and more devices.  Sinodec Industrial Co., ltd.  is a Chinese factory specializing in the production of usb cables. We provide wholesale and OEM production services for this USB-C charger cable.

In 2019, shipments of equipment equipped with Type-C interfaces are expected to reach 2 billion units.  Type-C will have a penetration rate of 80% in notebooks and desktops, and 50% in products such as smartphones and tablets. With the rapid spread of USB PD fast charging on mobile devices such as laptops and mobile phones, we have found that many USB PD chargers that support high current output are equipped with a USB-C to USB-C cable with E-Marker chip.  For example, Lenovo's Thinkplus lipstick power supply is equipped with an E-Marker cable.

E-Marker chip on E-Marker cable But you may also find some problems. In fact, E-Marker cables are divided into different types, some can carry 100W power transmission, some can only be 60W; some cables can reach the transmission speed of up to 10Gbps, and some  It's just USB 2.0, and the data transfer can only reach 480Mbps.  So, how are these E-marker cables distinguished?  Let me tell you the following.

In simple terms, we can distinguish E-Marker cables by charging and data transferring: First, charging In general, the USB-C cable based on charging is USB2.0 in terms of data, such as some standard USB cable charging cables commonly available on the market.  Under the USB2.0 standard, charging can be divided into two types: 60W (20V/3A) and 100W (20V/5A). In the USB-IF Association's standard, E-Marker chips are not required for cables with currents below 3A or less. When the current exceeds 3A, the E-Marker chip must be used.  At present, many USB PDs on the market do not have a power of more than 60W, so the standard is not a cable with an E-marker chip to save costs.

Second, the data transferring The charging head network has learned from the standards of the USB-IF Association that when the transmission speed of the USB-C cable is USB 2.0, the E-marker chip is not required.  However, when the transmission speed reaches USB 3.1 Gen1 (5Gbps) or USB 3.1 Gen2 (10Gbps), the E-Marker chip must be used, which has little to do with the power of the USB-C cable.  However, the E-Marker chip also marks the power transmission capability of the cable while marking the performance of the cable data. Apple Thunderbolt 3 Cable E-Marker Information 60W USB 3.1 Gen2 Cable E-Marker Information In general, users are still relatively easy to distinguish in daily life. The maximum charging power of cables without E-Marker chips can only reach 60W, and the maximum data transmission speed can only reach USB 2.0 (480Mbps).  Level; for cables with E-Marker chips, you can use E-Marker information to understand the specific performance of the product.