USB 3.1 cables are considered full-featured USB-C cables. Receptacles are found on devices and adapters. Two genders (kinds) of connectors exist, male (plug) and female (receptacle). The 24-pin double-sided connector is slightly larger than the micro-B connector, with a USB-C port measuring 8.4 millimetres (0.33 in) wide, 2.6 millimetres (0.10 in) high, and 6.65 millimetres (0.262 in) deep. USB-C port (receptacle) on a mobile phone USB Type-C and USB-C are trademarks of USB Implementers Forum. USB-C cables interconnect hosts and devices, replacing various other electrical cables and connectors, including USB-A and USB-B, HDMI, DisplayPort, and 3.5mm audio jacks. 5.2.3 Compatibility with other fast charging technology.5.2.2 Compatibility with audio adapters.
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3 USB-C receptacle pin usage in different modes.
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![multi channel pcie usb 3 card with 19 or 20 pin connector multi channel pcie usb 3 card with 19 or 20 pin connector](https://ae01.alicdn.com/kf/HTB1.Cn2pb5YBuNjSspoq6zeNFXaV/1-pcs-SuperSpeed-2-Port-USB-3-0-19-pin-USB3-0-PCI-E-PCI-Express.jpg)
USB-C (formally known as USB Type-C) is a 24-pin USB connector system with a rotationally symmetrical connector.