3Com TokenLink 3C339, User Manual

Page: 23 / 78

Connecting to the Network 2-5
CAUTION: Connect the cable only to the 3C339 NIC you
just installed. Connecting the cable to other NICs could
seriously damage the NIC and the token ring network. Do
not daisy-chain token ring NICs or connect them back
to back.
Connecting to STP Cable
1 Locate the NIC’s DB-9 port on the backplate, as
shown in Figure 2-3.
Figure 2-3 Connecting the DB-9 Connector
2 Connect the cable’s DB-9 connector to the NIC’s DB-9
port, and secure the connector by tightening the
two screws.
3 Connect the other end of the cable to a dual access
unit (DAU), a multistation access unit (MAU), a
controlled access unit (CAU), or a token ring switch.
CAUTION: Connect the cable only to the 3C339 NIC you
just installed. Connecting the cable to other NICs could
cause serious damage to the NIC and the token ring
network. Do not daisy-chain token ring NICs or connect
them back to back.
DB-9 port
DB-9
connector
INS
ACT
Book Page 5 Thursday, June 5, 1997 9:07 AM