HPE 660093-001 FL capacitor cable is a capacitor pack assembly for Smart Array storage controllers. Its 914 mm (36-inch) cable connects the pack in the server, while the capacitor provides backup power to a Flash-Backed Write Cache (FBWC) memory module if system power fails.
HPE documentation states that the pack can support the FBWC module for up to 80 seconds during a power failure. This brief reserve is intended to help preserve cached write data while the system loses power. The part is designed for Smart Array controller use.
The opened listing describes this item as refurbished. The reference here is HPE part 660093-001.