Digital Equipment VAXstation 3100 Maintenance Manual page 152

VS 3100 (Model 40) System 131
5.3 Options
This section describes the options available on the VS 3100 (model 40) system.
5.3.1 Internal Memory Options
Three memory modules are available: a 4-Mbyte memory module, n 12-Mbyte
memory module, and a 16 Mbyte memory module. Only one memory module
can be plugged into the system module unless the 16 Mbyte memory module
is installed which allows one of the 4 Mbyte or 12 Mbyte memory modules
to be plugged into the 16 Mbyte memory module piggyback style. With the
16 Mbyte module plugged into the system module, a total of 24 Mbyte or 32
Mbyte memory is possible (4 Mbytes on the system module and the 12 Mbyte
module piggybacked on the 16 Mbyte module= 32 Mbytes).
5.3.2 Graphics Coprocessor Options
The 8-plane graphics module is in the system box and plugs directly into the
system module.
5.3.3 Mass Storage Controller Module Options
The MSC module is an option on systems which are diskless. Disldess systems
can be upgraded with storage devices. The MSC module is on the lower drive
plate and connects to the system module through the MSC cable.