Pentium® PRO - Microprocessor Board

1.   Heat sink retention clip
2.   Fan sink
3.   Heater spreader
4.   Pin 1 location
5.   Primary Microprocessor
6.   Fan power cable connector (J21)
7.   Secondary (optional) processor board socket (U6),
    empty, with lever in closed, locked position
8.   Primary Processor Board Socket (U5),
    with lever in closed, locked position
9.   Secondary (optional) voltage regulator (VRM) connector
10.   Primary Voltage Regulator Module (VRM)
11.   Fan power cable