Compaq PORTABLE 386 User Manual

To replace the second serial interface board, reverse steps 1 through 6.
Chapter 8.11 Memory Expansion Boards
Three memory expansion boards are available for the COMPAQ PORTABLE 386
Personal Computer:
o 1 to 2 Megabyte Memory Expansion Board, which comes standard with four
sockets and one megabyte of random access memory (RAM). The one megabyte
of RAM is in the form of a memory upgrade kit (two 512 Kbyte memory
modules), which is installed in two of the sockets. A second memory
upgrade kit can be added to bring the memory expansion board up to its two
megabyte capacity. This board cannot be used in combination with either
the 4 megabyte memory expansion board or the 4 megabyte memory extension
board.
o 4 Megabyte Memory Expansion Board comes standard with four megabytes of
RAM surface mounted to the board. This board may be used alone or in
combination with the 4 megabyte memory extension board.
o 4 Megabyte Memory Extension Board also comes standard with four megabytes
of RAM surface mounted to the board. However, this board can be used only
when connected to the 4 megabyte memory expansion board.
Each memory expansion board (or combination) fits into the same options
compartment slot in the COMPAQ PORTABLE 386 Personal Computer.
The diagram on the following for a quick reference to the memory expansion
process.
NOTE: Memory expansion boards cannot be added until the system board is
fully populated with two megabytes of RAM.

Compaq PORTABLE 386 Specifications

General

Brand	Compaq
Model	PORTABLE 386
Category	Desktop
Language	English