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Lesson 4: Case fan installation - replace computer fan, computer fan screws

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Overview

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In lesson 4 we'll install or replace the computer fans with computer fan screws, into the system making sure the direction of airflow is correct and discuss cooling the hard drives.

What we want to create is airflow, bringing in cool air from the front of the case and exhausting the hot air out the back. To do this, we use case fans. Some cases also bring cool air in from the bottom and side of the case and some cases also exhaust the hot air out the top of the case.

The case we're using for this build, includes 3 fans already installed. 2 in the front to bring in cool air and 1 in the back of the case to exhaust the hot air. There are places for 4 more fans. 2 on the side panel, 2 at the top of the case and 1 on the bottom of the case. We’re not going to add additional fans to this case.

On a previous build we added a 120mm fan to the side of the case. The fan came with a 3 pin power cable and a 3 pin to 4 pin molex adapter.

Air Flow Direction
On the side of the fan there is an arrow that tells us the direction of airflow. We'll turn the fan so air flows into the case and slip it into the 120mm fan bracket on the side of the case.

Installing the Fans
This is a 120mm fan with a 3 pin power cable and a 3 pin to 4 pin molex adapter. On the side of the fan there is an arrow that tells us the direction of air flow. We'll turn the fan so air flows into the case and slip it into the 120mm fan bracket on the side of the case.

On another build, the case did not come with a rear exhaust fan so we installed a 120mm fan. This case had no fan bracket so we used the self boring screws that came with the fan.

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Comments

+3 # mpeacock01 2010-10-28 09:37
First time builders. The installation guides are not as clear on fan connectivity as we had hoped. We have a 932 HAF High Air Flow Full Power Chassis, a Sabertooth X58 Motherboard and a OCZ700SXS2 Power Supply. This chassis has a top, back front bottom and side fan (not counting the fan on the motherboard connected to the cpu). On the motherboard there is a 3 prong PWR Fan, CHA Fan 2, CHA Fan 3, and NB Fan connection, and there is 4 prong CHA Fan 1 connection. Which goes to which? Love your videos by the way.;-)
+2 # admin2 2010-10-28 10:08
Other than the CPU Fan which needs to go to the CPU Fan header on the motherboard you can connect any of the fans with 3 pin connections to any of the other fan headers including that CHA FAN1 which can take a 4 pin fan connection. It looks like all of the case fans have both 3 pin fan connections and 4 pin molex connections. I would connect as many as you can to the motherboard's fan headers and any left over to a molex power connector on the power supply.
0 # mpeacock01 2010-10-29 02:28
FANtastic...;-) your response take care of the mystery. I actually was able to connect all the fans to the motherboard. Thanks again.

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