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...
Get notified when back in stock
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.
- GND
- GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
- USB 2.0
- USB 2.0 is a widely used wired standard for carrying both data and power between a device and a computer or other compatible host, with data rates up to 480 Mbps. It indicates the kind of port a device uses and that it should work with most modern and many older computers.
- USB-C
- USB-C is a small, reversible USB connector that can carry power, data and, on some devices, video over a single cable. The same connector can range from charging only to high-speed data, so the functions a given port actually supports vary.
- VBUS
- VBUS is a label for a bus or supply voltage. Most commonly it is the +5V power line carried over USB, though on power-monitoring hardware it instead marks the bus-voltage input being measured, so check which sense applies before connecting power or a measurement point.
Find this product in
Brands
Power & Batteries
Prototyping & Wiring
Related Tutorials
Free guides on learn.littlebird.com.au
