The ASUS X556UJ and X556U laptops typically use a flat, flexible cable known as the LVDS (Low-Voltage Differential Signaling) cable to connect the display panel to the motherboard. This cable is responsible for transmitting video signals from the motherboard to the display.
The part number you provided, 1422-02590AS, appears to be the specific part number for the LVDS cable for these ASUS models.
If you're looking for a replacement or troubleshooting information for the display cable of the ASUS X556UJ or X556U laptops, you can use the part number 1422-02590AS to ensure compatibility. Additionally, you can search for "ASUS X556 LVDS cable" or "ASUS X556 display ribbon cable" to find relevant products or resources.