The maximum limit for USB-C Gen 2 with Thunderbolt 3 support is 40 Gb/s. Only under certain conditions. To ensure this speed, the cable length should not exceed 18 inches (45 centimeters). Otherwise, the speed will be low. This is where things get a bit confusing. The Thunderbolt 3 cables fall into two categories: passive and active. You should
Effective Immediately 100 Watt USB Type-C to USB Type-C cables are replaced by 240W USB Type-C to USB Type-C cables as per Table 3-1, Note 1, of the USB Type-C Cable and Connector Specification Release 2.1, May 2021. The USB-IF will no longer certify any 100W Cables on December 22 nd, 2021.Although power delivery standards in USB-C cables prevent overheating and overcharging, using a cable with an extremely high PD can damage the device. Length. USB-C cables’ lengths should comply with the set standards to transfer data and charge optimally. For instance, cables with USB 2.0 should have a maximum length of four meters. While wjosten. I believe the max length for a USB cable is 5 meters, but you are correct, Apple only sells up to 2M's. I suspect you'll just have to "try" one of the 15' cables on the market & see if it works. Hopefully they figured something out in the 3 years since this was first posted. 7.5dB cable assembly portion supported up to 3m of cable length (dependent upon the gauge of the wires in the cable). The 2.5dB device allocation allowed for PCB routing of 2 to 3 inches, depending upon the amount of loss from the package and I/O parasitics.
USB-C connectors can transmit DisplayPort video to docks and displays using standard USB Type-C cables or Type-C to DisplayPort cables and adapters; USB-C also supports HDMI adapters that actively convert from DisplayPort to HDMI 1.4 or 2.0. DisplayPort Alternate Mode for USB Type-C specification was published in 2015.
Data transmission It is learned from the standard of the USB-IF Association, the E-marker chip is not required for the cable, when the transmission speed of the USB-C cable is USB 2.0. 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 nothing to do with the
The maximum length for a USB2.0 compatible cable is about 5 m or 16 feet. Longer cables exist, but these are by definition not spec compliant and thus cannot be guaranteed to work with every device. If too long a cable is used with a DAC, you will have dropouts or it may fail to be recognised at all.