What kind of case?

J

Jim Macklin

The fan connectors for the case fans are 12 volt Molex
connectors and you use the extra wires taps from the power
supply. The side door fan probably has what is called a
pass-through in that you can connect a power supply wire to
one side and another fan (the rear fan) to the other
connector.

You should have the manual for both the case and the mobo.

The reason there are three pin connectors on the mobo for
the CPU is that the third wire is for fan speed.
Here is a caution note from an Intel D865 board manual...
2.11.3 Fan Connector Current Capability

CAUTION

The processor fan must be connected to the processor fan
connector, not to a chassis fan

connector. Connecting the processor fan to a chassis fan
connector may result in onboard

component damage that will halt fan operation.

Table 44 lists the current capability of the fan connectors.

Table 44. Fan Connector Current Capability

Fan Connector Maximum Available Current

Processor fan 1600 mA

Front chassis fan 800 mA

Rear chassis fan 800 mA


--
The people think the Constitution protects their rights;
But government sees it as an obstacle to be overcome.


|I have run into a small problem. I can't figure out the
connections with
| the case fans. On the motherboard, there's two 3-pin
connectors - one is
| for system fan and the other is for power fan. In my
Thermaltake case,
| there are 3 fans: front, rear, and on the side door. For
the front and
| rear fans, how do I know which one to connect goes with
the power or system
| connector? I'm not for sure about the side door fan
either as it has 2 IDE
| power wires. Does this connect directly to the power
supply?
|
|
in message
| | > As long as there is no power applied, you can't short
| > anything. When I did mine, I put the mobo in the case,
with
| > the ports aligned to the back panel. Then I used a
Magic
| > Marker to mark the holes on the case. The goal is to
fully
| > support the mobo and not have anything touching the
backside
| > of the mobo that could short it out. That means no
screws
| > left to rattle around too.
| >
| > When you get it assembled, double check that all the
fans
| > are connected correctly and connect the monitor,
keyboard
| > and mouse. Turn it on and it should perform the POST
(power
| > on self test) and then display(turned ON too) the
message
| > that there is no operating system installed. It will
have
| > some beeps on the way as it does that. Check the BIOS
setup,
| > make sure the CD is the first device for boot order.
Insert
| > the XP CD and reboot it, just press the power switch
twice.
| > It will detect the XP CD (make sure the BIOS is set to
first
| > boot device)
| >
| > Follow the prompts. As soon as XP is loaded, install
the
| > mobo drivers that come on the CD with the mobo. Just
have
| > the bare bones, no printers, scanners or other devices
| > connected until later.
| > Then, created your Internet connection, turn the
firewall
| > ON, and do Windows update.
| > Then install any additional hardware, applications and
when
| > the system is running properly, install your backed up
data.
| > It is best to do one item at a time so you know what is
| > causing problems should any happen.
| >
| >SNIP{
 
P

peter

It would help if we knew the Mobo you were installing
usually the power fan is for the fan in the PSU
There usually is a small wire comes off the PSU with a 3pin connector
The system Fan could be the CPU cooler........but nowadays mobo usually have 3
connectors with the 3rd one labelled Cpu_fan.
On the other hand I am used to AMD Systems
So if you do not have a Cpu_fan connection then the system fan connection is for
CPU
peter
 

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