Compaq Contura 400 Maintenance And Service Manual page 5

Chapter 1.2 Serial Number
The computer serial numbers should be provided to Compaq whenever
requesting information or ordering spare parts. The serial number is
located on the bottom of the computer.
The serial number on the Docking Base is located on the rear of the base.
Chapter 1.3 System Unit Module Overview
The system unit module (Figure 1-4) contains the following upgradable
components:
o Hard drive
o Memory expansion board
o Processor upgrade (Contura 400 only)
A complete list of replaceable parts is included in Table 1-1. Major
components include: