This TCL Roku TV Replacement Part is for those who own a 55S405 model. It is a Wifi Module that ensures your TV is connected to the internet and you can enjoy streaming your favorite shows and movies hassle-free. This module is compatible with WC0HR2601 and has been tested to work seamlessly with the TV. Please examine the photos and check the numbers to get the exact part for your needs. Feel free to contact me if you have any questions. This part was taken from a working tv with a faulty backlight.