This is the LED light circuit board that indicates the system's power, battery, and HDD status, compatible with the Dell Latitude 9510 and 9520 2-in-1 systems.

Compatible Dell Laptops:
Latitude 9510 2-in-1
Latitude 9520 2-in-1
Latitude 9520
Latitude 9510

DPart Number: 40NC1

Part Number's:
LS-H983P
FDB50

Cable:
NBX0002L200