HP ProLiant DL580 Gen8 Server - Manual (Page 21)

Component identification 21
FBWC capacitor slots
Item Description
1 Slots 2-4—Connect to optional SAS controllers
2 Slot 1—Connects to the SPI board
FBWC module LEDs
The FBWC module has three single-color LEDs (one amber and two green). The LEDs are duplicated on the
reverse side of the cache module to facilitate status viewing.
1 - Amber 2 - Green 3 - Green Interpretation
Off Off Off The cache module is not powered.
Off Flashing once
every 2 seconds Flashing once
every 2 seconds The cache microcontroller is executing from within its
boot loader and receiving new flash code from the host
controller.
Off Flashing once
per second Flashing once
per second The cache module is powering up, and the capacitor
pack is charging.