1
NETWORK INTERFACE CARD
INSTALLATION
This chapter describes the 3C509B network interface card
(NIC), provides procedures for installing the NIC, and
describes the correct network cable to use for connecting
each version of the NIC to an Ethernet network.
Network Interface Card Overview
The four versions of the 3Com
®
EtherLink
®
10 Mbps ISA
3C509B NIC are shown in Figure 1. Use the appropriate
version to connect your ISA or EISA PC to an Ethernet
network using up to three different types of media.
Figure 1 3C509B Network Interface Card Versions
Each NIC has a light-emitting diode (LED) called the link
LED, which indicates whether there is an active connection
between the NIC and the hub. See “Link LED” on page 25
for a more complete description of this function.
LED
LED
LED
LED
RJ-45 port
AUI port
BNC port
3C509B-TPO 3C509B-TPC 3C509B-TP 3C509B-COMBO
Book Page 17 Monday, June 7, 1999 8:55 AM
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