This flex cable is designed to connect the main board of your Toshiba 55LF621U19 TV to the LCD screen, allowing for high-quality audio and video output. The cable is specifically made for use with Toshiba brand products and is compatible with the 55LF621U19 model. This cable is an essential component for your television, ensuring that it functions properly and delivers optimal performance. With easy installation and reliable functionality, this flex cable is a must-have for any Toshiba TV owner looking to enhance their viewing experience.