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SECTION 2
Unit Description
This section provides information about the individual Units that make up a PC. The names of all the parts of a Unit are given,
followed by any details that apply to that Unit alone. For a description of how the Units fit together to become a PC, refer to
Section 3 Assembly Instructions. For information about the model numbers of any of the parts described in this section, refer to
Appendix A Standard Models.
2-1 CPU Rack 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2 CPU Units 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-3 Expansion I/O Rack 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4 Power Supplies 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-5 I/O Units 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-5-1 Standard I/O Units 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-5-2 Group-2 High-density I/O Units 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-5-3 High-density I/O Units Classified as Special I/O Units 21. . . . . . . . . . . . . . . . . . . .
2-6 Memory Units 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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