Asus ISDNLINK TA-200 Manual page 7

Serial and power connection
5.
Use the gray serial cable supplied to connect between the 9 pin D connector on the
back of the adapter to a spare serial port connector on the rear of your computer.
The supplied cable has both 9 pin and 25 pin connectors so it can be used with
either size connector on your PC. You should then also connect the power lead
from the power supply and then plug the power supply into your main power.
Now, your TA-200 adapter is ready for installation.
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