Dell LCD back cover assembly with integrated WAN antenna and infrared functionality, part number WJ5WY. This genuine Dell replacement component serves as the rear protective housing for compatible laptop LCD displays, measuring approximately 542 mm in width. The assembly incorporates a built-in wireless WAN antenna system for mobile broadband connectivity and infrared capability for peripheral communication. Constructed from durable ABS plastic with precise mounting points and cable routing channels, this back cover ensures proper display protection while maintaining optimal signal transmission for wireless features. The matte black finish matches original Dell laptop aesthetics and provides scratch resistance. Compatible with multiple Dell laptop models requiring part WJ5WY, this assembly facilitates professional display repairs and component replacements. Installation requires technical expertise and proper tools for secure mounting and antenna connection. The integrated design eliminates separate antenna mounting while maintaining structural integrity and wireless performance standards. All mounting holes, connector cutouts, and ventilation patterns match original specifications for seamless integration with existing display components.