3Com 005605-00 Manual page 17

TIP:
Grasp the jumper shunts with
a tweezers or needle-nosed pliers. DO
NOT grasp too firmly, as you may crush
the jumper shunts. If a jumper shunt
seems stuck, gently rock it back and
forth as you lift. Do not touch any other
part of the modem or your computer
with the tweezers/pliers. A jumper
shunt needs to be sitting on both
jumper pins in order to effectively set
the modem to the desired setting.
I M I
NTERNAL ODEM NSTALLATION WITH
W 3.
INDOWS X
4. Move the jumper shunt to the new setting.
The COM port setting can involve one
to three shunts. The four possible COM
port settings are as follows:
COM 1
COM 3
Unlike most COM port settings, the
IRQ setting involves only one jumper
shunt. Simply move the jumper shunt to
the pins labeled with the IRQ you need.
COM 2
COM 4
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