PDP-11/45, 11/50, and 11/55 System

This document covers the physical description, site preparation, and installation procedures for the PDP-11/45, 11/50, and 11/55 computer systems. It details power distribution, cabling requirements, and environmental specifications for the CPU cabinet and optional expansion cabinets. Additionally, it provides guidance on installing plug-in card options (such as floating-point processors and memory) and system unit options, including associated engineering drawing references.