The Front Panel board (FPB) is located on the front skins
and is accessible to the user. It contains the power ON/OFF switch,
a decimal display for cabinet numbers between 0 and 15, and LED's
for +5 V Power Good, +48 V Power Good, MP Present, Remote, and Attention.
Each cabinet contains one Front Panel board. This assembly is not
hot swappable.
The Cell OL* (HCOLB) unit is located on the front of the cabinet
making its LEDs visible from the front of the cabinet. It contains
16 LEDs, two for each cell board. This assembly is not hot swappable.