
PC-IRS5-01 Installation Instructions
room to run the Power Cable and the Extender Cable to a point in your case where you can
mount the required back plane connectors and still hook up the internal cables. Again, the
Power and Extender cables are 20” long.
Installation of the Internal Cables
5V Power Cable. Mount the female barrel connector that is on one end of the cable in a
3/8” hole in your case. You then plug the white connector into the IRS5 connector labeled
5VP CN3.
MB Header Cable. Install by plugging in the white connector on the cable to the connector
on the IRS5 labeled MB CN4. Then locate the Front Panel Power Switch header on your
motherboard (MB). You can find out which header that is and where it is located in your MB
User/Installation Guide. You will need to know the 2 pins on the header for the Power LED
and the 2 pins that are for the Power Switch on the front of your computer. In most cases
these 4 pins are side by side on the MB Front Panel header. You will also need to know in
each of these pairs of pins which are the positive (+) and negative/ground (-) pins. If these
pins are not labeled as such in your MB User Manual then you can easily find out by using a
voltage meter.
Be sure that you are working with the Front Panel Motherboard Header with this cable.
Otherwise, the IRS5 could be shorted out and become useless.
To use your volt meter, turn the power on to the computer at the power supply but do not
press the power button. Remove the front panel connectors for the power switch and the
LED from the MB Header. Touch the positive terminal (red) of your voltage meter set at 20
DCV to one of the Power Switch pins and touch the black terminal of your volt meter to a
ground like the steel in your case. It will either read “0”or give you a reading of 3-5 volts.
The pin that reads 3-5 volts is the (+). The other pin is the ground (-). If you do not find the
LED polarity in the User Manual you can find out after you install the cables. When you turn
on your system after installation, if the Front Panel LED lights up the way it did before the
installation then you have installed it correctly. If it does not light then change the
installation on the MB FP Header so that the female connector on the red wire labeled LED+
is switched with the black wire connector labeled LED- and plugged back onto the LED pins
on the header.
If you have not already done so, now you can plug the 4 female connectors labeled Power+,
Power-, LED+ and LED- to the corresponding pins on the FP MB header that you identified
before. Then plug the 4 male connectors onto the cables from the FP Power switch and FP
LED making sure that they match the original connections that existed on your MB before
you began this installation. That way the Power Switch and the LED will still be connected to
the MB as they were before we added the IRS5 cable. Only now we also have the same
connections for the IRS5.