Adafruit
Adafruit USB Type C CC Resistor Fixer
The Adafruit USB Type C CC Resistor Fixer solves a common problem: USB-C devices that won't power or communicate when plugged into another USB-C port. Many d...
The Adafruit USB Type C CC Resistor Fixer solves a common problem: USB-C devices that won't power or communicate when plugged into another USB-C port. Many devices are missing the two 5.1K CC (Configuration Channel) resistors required for proper USB C-to-C negotiation at 5V — this inline adapter adds them for you.
Simply plug it between your USB-C cable and the misbehaving device. The fixer passes through the two data pins plus VBUS and ground power lines, while adding the missing 5.1K CC resistors on the port side. A power good LED confirms when the connection is working.
Key Features
- Adds Missing CC Resistors – Provides the 5.1K CC1 and CC2 resistors required for USB C-to-C 5V connections
- Inline Design – USB-C socket and plug for easy cable pass-through
- Power Good LED – Visual confirmation that the connection is active
- Data Pass-Through – Carries D+ and D- data lines plus VBUS and GND
- Compact PCB – Small enough to fit onto a cable or into a port
Ideal For
- Fixing USB-C devices that won't charge or connect via C-to-C cables
- Devices that work with USB-A to C adapters but fail with C-to-C cables
- Quick diagnosis of CC resistor issues on USB-C hardware
Package Contents
- 1× Adafruit USB Type C CC Resistor Fixer (assembled)
Jargon buster
Plain-language definitions for the technical terms used above.
- DisplayPort
- A digital display interface used to connect monitors and other video displays. It matters because the supported DisplayPort version affects display resolution, refresh rate and monitor compatibility.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
- USB 2.0
- USB 2.0 is a wired connection standard used for data and power between a device and a computer or compatible host. For this camera, it tells you what kind of port it plugs into and helps indicate whether older or newer computers are likely to work with it.
- USB-C
- A modern reversible USB connector used for power and data connections. On this product it matters because it can connect directly to a computer as well as to a microcontroller project.
- VBUS
- A label often used for the main bus or supply voltage being measured or distributed on a board. Knowing what VBUS refers to helps you wire the monitor to the correct point in the circuit, especially for high-side measurements.
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