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System Components
Component
Descriptions
Table 1–2 describes the ports, switches, and indicators on the
back of the system unit.
Table 1–2 Components: Back of System Unit
Number
Feature
Function
!
SCSI port
Used to connect Small
Computer System Interface
(SCSI) peripheral devices to
the system unit. Your system
comes with a SCSI terminator
pre-installed. Remove this
terminator if you attach
external options to the system
unit or expansion boxes.
"
Monitor video port
Used to connect the monitor
video cable.
#
Monitor power port
Used to connect the monitor
power cord.
$
System power port
Used to connect the system unit
power cord.
%
Remote mouse/
keyboard port
Used to connect the remote
mouse and keyboard cable.
&
Mouse port
Used to connect the mouse
cable.
'
Keyboard port
Used to connect the keyboard
cable.
(
Printer/
communications port
(TTA3)
Used primarily to connect a
printer or hardcopy terminal
through an RS423 cable.
OpenVMS does not support
modems on this port.
)
Communications/
printer port (TTA2)
Used primarily to connect an
asynchronous communications
device such as a modem,
through an RS232 cable. The
secondary use is to attach a
printer or hardcopy terminal.
(continued on next page)
1–8 Your VAXstation 4000 Model 90 System