System Box,
Continued
Alternate console switch This switch selects either the graphics
terminal or printer/console port to be the system’s console.
Halt button When actuated, this button sends a halt signal to
the CPU module.
Diagnostic lights These lights are located on the right side of
the control panel. These lights display two binary fields, which
represent a two-digit hexadecimal diagnostic code.
I/O Panel
The I/O panel provides connectors to devices external to the
system. The system configuration determines which external
devices are connected to the panel. The external devices, shown
in Figure 3–4, are as follows:
!
Ethernet interface (left to right: standard port, network
switch, and ThinWire port)
"
RS232 communications port
#
Printer/console port with a DEC423 connector (MMJ)
$
Keyboard port
%
Mouse port
&
Remote keyboard/mouse port
'
SCSI Port
(
Option port (for the DSW21 communications device or
TURBOchannel adapter option)
)
Monitor video port
+>
Monitor power socket
+?
AC Power socket
Continued on next page
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