Component identification  20 
 
 
 
Status 
On = AC power is connected. 
Off = AC power is disconnected. 
Missing = Riser cage is not installed, or power might not be 
connected. 
 
 
FBWC module LEDs (P222, P420, P421) 
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.