Adding or Replacing Optional Components
Introduction
You can upgrade and replace components on the Vanguard 300/305 processor
card. This section provides instructions for the following:
•
DIMs (Data Interface Modules) and DIM Site daughtercards
•
DRAM and Data Compression SIMMs (Single In- line Memory Modules)
•
DSU daughtercards
•
ISDN daughtercards
Vanguard 300/305 cards and their components are sensitive to static discharge,
which can damage components. Use proper handling and grounding precautions,
including the use of an anti-static grounding strap, whenever you handle a card.
Adding or Replacing a DIM
Overview
The Vanguard 300/305 supports V.24, V.35, V.36, or V.11 DIMs. DIMs reside on
the motherboard and DIM Site daughtercard, if installed.
Example of DIM Position
Figure 4-6 shows how to position a DIM on the Vanguard 300/305 motherboard.
Figure 4-6. DIM Position
