This is the LED light circuit board that indicates the system's power, battery, and HDD status, compatible with the Dell Latitude 5501 and Precision 3541 Laptops.
Compatible Dell Laptops:
-Latitude 5511
Latitude 5501
Precision 3541
Precision 3551
Dell Part Number: 4N2R4
Alt Part Number's:
EDC51
NBX0002HL00
LS-G901P