System information

Installing Hardware Options
3–20
VAX 4000 Model 108 User Information
MLO-013722
1
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Figure 3-12 Installing the Asynchronous Communication Option
3. Insert the screw through the option and into the I/O shelf as shown.
4. Close the cover, connect the power cord and plug it into the wall outlet.
5. Connect the 120-pin-to-2x36 or 120-pin-to-2x50 pin pigtail cables to your new
asynchronous communications option.
Optional Additional KFDDA DSSI Port
The VAX 4000 Model 108 system supports seven additional external DSSI devices with
the KFDDA option.
Installing the KFDDA
The optional external KFDDA DSSI option is installed in the I/O slot which is third from
the bottom. To install the KFDDA option, follow these instructions:
1. Turn off the system, unplug the power cord and remove the cover.