Case fan question.

[SuperCell]

I bought a Rosewill Ranger-M case and the front fan has both a 3-pin connector and a standard molex connector.

I wanted to test the fan (don't have mobo yet), so I used a power adapter and connected it to the molex.

The fan did absolutely nothing.

Is there something I'm missing here? Do I possibly have a defective fan?

I plan on using the 3-pin connecter @ the mobo, but again, the fan didn't even move when power was supplied to the molex.

 

[Tsumi]

What power adapter did you use?

 

[SuperCell]

It's a power adapter intended for powering IDE drives externally. It had a standard 4-pin molex-style connector.

 

[CMadki4]

I'm assuming this IDE power supply is around 1.0A and 12VDC?

Does the Molex connector for the fan have yellow/back wires or red/black wires?

Yellow/Black= 12VDC
Red/Black= 5VDC

If the Molex connector on the fan has Red/Black, then it won't work. It's not even completing a connection. You'll have to jumper it over to run 12VDC through your fan.

 

[thekamikazepr]

try using the PSU and do the "clip trick"

Verify the Amps in the external source if you are not able to do the jumper clip trick

 

[CMadki4]

try using the PSU and do the "clip trick"

Verify the Amps in the external source if you are not able to do the jumper clip trick

I had assumed the PSU was installed when he tested, but if not: do this /\

Otherwise, if the PSU is installed and powering on, then I'm still pretty sure you're not completing the connection. The molex 4 pin connector uses different pinout for 12VDC than it does 5VDC.