The Adafruit USB Type C CC Resistor Fixer solves a frustrating problem caused by poorly designed USB-C ports that lack the required 5.1K pull-down resistors on the CC lines. Without these, many USB-C to USB-C connections fail to power or sync properly — a common issue among lower-quality or cost-cutting designs. This clever little PCB slots inline with a USB-C cable or port and adds the missing resistors, ensuring compatibility and power delivery at 5V. It passes through data and power lines, includes a helpful power-good LED, and is intended for charge/sync use only (not high-speed data or alternate modes). Whether you’re a developer, hacker, or just dealing with flaky USB-C ports, this affordable tool can save your project — and your sanity.

Features:

1. Adds missing 5.1K CC resistors for proper USB-C to USB-C power negotiation
2. Fixes devices that don’t work due to poor USB-C port design
3. Pass-through for VBUS, GND, and data lines
4. Power-good LED indicates proper connection
5. Compact and lightweight — easy to use inline with cables or ports
6. Ideal for USB charge/sync, not high-speed data or specialty protocols

Package Includes:

1 x Adafruit USB Type C CC Resistor Fixer