HP Integrity rx4640 Server - Manual (Page 6)

Hardware features 6
P700m model
Item ID Description
1 Status LEDs (runtime LEDs). To interpret the illumination pattern of
these LEDs, see "Controller board runtime LEDs (on page
41 )".
2 Connector (not used on HP Integrity servers).
3 Cache module (also known as array accelerator).
4 Connector for the cable to an optional cache battery that upgrades
the cache to BBWC. This connector is absent on some P700m
models.
5 Mezzanine connector to system board.
P800 model