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KH3478 is a custom-made part for RCA Electronics Inc.'s line of TVs, DVD players, and other electronics products. It is a circuit board component with 3,478 pins that facilitate the connection of electronic components within the device. The part is designed to be used in a wide range of RCA products, from classic CRT TVs to high-end LED and OLED TVs. KH3478 is used to connect components such as the LCD display, keyboard and remote control, as well as other electronic components. The KH3478 part is designed to ensure a secure, reliable connection and provide smooth operation of any RCA product.