Pinouts >  Serial interfaces cables and converters scheme
24 pin USB-C plug connector layout
24 pin USB-C plug connector
for high-speed connections

USB type-C to USB 3.2 cable

Full-featured USB-C cables that implement USB 3.1 Gen 2 can handle up to 10 Gbit/s data rate at full duplex. They are marked with a SuperSpeed+ (SuperSpeed 10 Gbit/s) logo. There are also USB-C cables which can carry only USB 2.0 with up to 480 Mbit/s data rate. All USB-C cables must be able to carry a minimum of 3 A current (at 20 V, 60 W) but can also carry high-power 5 A current (at 20 V, 100 W).

USB-C 1 Signal USB-C Pin USB 3.2 Pin USB 3.2 Signal USB 3.2 Description
Ground A1,B1,A12,B12 4,7 GND, GND_DRAIN Ground
Vbus power A4,B4,A9,B9 1 Vbus Vbus power
Configuration channel. Shall be connected to Vbus through a resistor 56 kΩ A5  
Vconn B5
USB 2.0 differential pair, positive A6 3 USB D+ USB 2.0 differential pair, positive
USB 2.0 differential pair 1, negative A7 2 USB D- USB 2.0 differential pair, negative
SuperSpeed differential pair 1 TX, positive A2 6 StdA_SSRX+ SuperSpeed differential pair RX, positive
SuperSpeed differential pair 1 TX, negative A3 5 StdA_SSRX- SuperSpeed differential pair RX, negative
SuperSpeed differential pair 1 RX, positive B11 9 StdA_SSTX+ SuperSpeed differential pair TX, positive
SuperSpeed differential pair 1 RX, negative B10 8 StdA_SSTX- SuperSpeed differential pair TX, negative 
  shield shield    

Pins not mentioned are not connected. Pin A5 shall be connected to GND through a resistor 5.1 kΩ only (no Vbus connection) in standard-B cable.

Coaxial wire construction should be used for all SDP’s and there are no drain wires. The shields of the coaxial wires are connected to the ground pins. If shielded twisted pair is used, then drain wires are needed and shall be connected to the GND pins. 
Pins B6 and B7 should not be present in the USB Type-C plug.
All Vbus pins shall be connected together within the USB Type-C plug. A bypass capacitor is required between the Vbus and ground pins in the USB Type-C plug side of the cable. The bypass capacitor shall be 10nF ± 20% in cables which incorporate a USB Standard-A plug.
Shield and all GND shall be connected within the USB Type-C plug on both ends of the cable assembly.

Maximum cable length is 2 meters.

9 pin USB 3.0 Standard-A, Standard-B Plugs and 11 pin USB 3.0 Powered-B Plug connector layout
9 pin USB 3.0 Standard-A, Standard-B Plugs and 11 pin USB 3.0 Powered-B Plug connector
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USB-C to USB 3.2 cable visual pinout:click to enlarge
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