Technical data

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
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