Avocent 690371 Leaflet

Quick Installation Guide

SST-4P and SST-8P Multiport Serial PCI Adapters

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590-650-501A  

Set the host computer system 

power switch to OFF.

Locate a free PCI expansion slot.

Insert and secure the adapter 

firmly into the expansion slot.

Replace the power cord and turn 

the host computer ON.

Refer to the appropriate software documentation, 
located on your SuperSerial CD-ROM, for detailed 
device driver information.

SST-4 and SST-8 PCI adapters require a fanout 
cable (ordered separately). SST Fanout Cables 
(FOCs) provide four or eight RS-232 interfaces. The 
following diagrams illustrate pinouts and signals for 
DB-9, DB-25 and RJ-45 fanout cables. 

a)

b)

c)

d)

SST-

4

P and SST-

8

P PCI adapters are 

intelligent, high-speed (up to 920k bps on each 
port) PCI expansion boards, which provide high 
performance serial I/O solutions for a PCI bus 
host computer.  All port interfaces are standard 
RS-232, with full modem control and voltage 
surge protection on every pin.

SST PCI adapters appear to the system host 
processor as memory.  That is, they are memory 
mapped devices.  Each adapter is automatically 
mapped into system memory at the time of 
device driver installation.

SST adapters occupy a PCI slot in the 
host computer and provide the intelligent 
functions to "off-load" the CPU from serial 
communications processing tasks.  

Use the following procedure to install your SST 
PCI adapter. As an alternative, you may follow 
the installation instructions presented in your 
host computer documentation.

1

2

3

Signal Name

Pin Functions

FO4-DB9 (PN 690367)        FO8-DB9 (PN 690370)

FO4-DB25 (PN 690369)        FO8-DB25 (PN 690372)

FO4-DB9 (PN 690368)        FO8-DB9 (PN 690371)