DEC MicroVAX 3100 Owner's Manual page 16

• Thin Wire and standard Ethernet connectability-Connection to either
standard Ethernet or Thin Wire Ethernet work groups and networks is
available, but not both simultaneously.
• RZ23 Disk Storage-In Model 10 systems, up to three RZ23 (l04Mb)
hard disk drives may be included while in Model 20 systems, up to five
RZ23 hard disk drives can be included. One of the RZ23 hard disk
drives functions as the system disk.
• Two operating systems to choose from-VAXlVMS or ULTRIX-32
(Digital Equipment Corporation's version of the UNIX operating
system). Operating system software may be factory installed on the
system disk or may be purchased separately from the hardware.
• RX23 Diskette Drives-Model 10 systems can be configured with one
RX23 (1.4Mb) diskette drive while Model 20 systems can be configured
with one or two RX23 diskette drives.
• Self-sensing power supply-The system power supply will accept power
inputs in the ranges 100/120 VAC and 200/240 VAC, at 50 or 60 Hertz,
without the need for a selection switch.
• Communication ports-Three DEC423 asynchronous ports (with MMJ
connectors for VTxxx type terminals) and one MODEM port (RS232)
are provided as standard. A H8571-A adapter is provided to enable the
RS232 port to be used with many cable types.
The maximum baud rate for all four serial ports is preset to 19.2 Kbaud
but can be changed to 19.8 Kbaud (or 38.4 Kbaud) by repositioning
jumper wires on the system module. This conversion will be done by
your authorized DIGITAL service representative. The actual baud rate
for the serial ports is software programmable.
• Optional DSH32-B communications module-The optional DSH32-B
communications module (included in some configurations) adds eight
asynchronous lines and one synchronous line to your system. There are
three different types. The type is determined by the electrical interface
of the synchronous port. See Table 1-1 for a list of the models.
Your System 1-3