This is the Ribbon Cable that connects the RGB backlit keyboard assembly to the motherboard; for the Alienware 15 R4 laptop equipped with the optional RGB-backlit keyboard.

Compatible Dell Laptops/Notebooks:
Alienware 15 R4 with RGB keyboard

Part Number:
DDR51
NBX0002AP00

NOTE: Compatible with 15 R4 systems that already have the optional RGB-backlit keyboard.