Dell Inspiron 15 3542 USB SD Card Reader Board Cable, part numbers XP600 and 0XP600, is a replacement component designed to connect the USB and SD card reader board to the motherboard in this specific laptop model. This cable ensures reliable data transfer between the SD card reader, USB ports, and the system, allowing for efficient use of external storage devices and peripherals. Essential for maintaining or repairing the functionality of your Dell Inspiron 15 3542, this cable helps ensure seamless connectivity and optimal performance of the USB and SD card reader features.