User Manual

INTERNAL MODEM INSTALLATION WITH WINDOWS 3.X
12
4. To change the COM port and IRQ settings,
you need to reposition the jumper shunts on
the COM port and IRQ pins. To do this, lift
the jumper shunts off the pins.
TIP: Grasp the jumper shunts with
a tweezers or needle-nosed pliers. DO
NOT grasp too firmly, as you may crush
the 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 shunt needs to be
sitting on both jumper pins in order to
effectively set the modem to the
desired setting.
5. 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:
0 1 SEL
COM 1
0 1 SEL
COM 3
0 1 SEL
COM 4
0 1 SEL
COM 2
• 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.