#2 pin fan connector molex how to#
#2 pin fan connector molex full#
#2 pin fan connector molex Pc#

Instead I'll detail pin identification on the header. To be sure of polarity, don't rely on wire colours completely. The standard fan's wires will be Black and Yellow as above for a 3-pin fan (NOT the same colours used on 4-pin fans), plus a YELLOW wire from Pin #3 you will NOT use. To do this you could splice onto wires from another fan already plgged into a header, or get an old junk 3-pin fan and cut off its wires (with connector) and splice two of them onto your fan's wires. That signal is NOT required to operate the fan, so the only impact MIGHT be that the header sends you an error message that the fan has failed because the header did not get a speed signal). Your fan does not have the third wire of standard 3-pin fans, but that is only to send back to the header the fan's speed signal. Its speed is controlled by a mobo header simply by varying the voltage supplied to it, which a PSU cannot do. Your old fan will operate just like the older type of standard fan called a Voltage Controlled fan, or 3-pin fan. But you could arrange to connect to a mobo fan header IF it is configured properly and get the fan under automatic speed control.

#2 pin fan connector molex full#

You can splice into lines from a PSU Molex output to get a constant 12 VDC supply so the fan runs full speed all the time. You really have two alternatives available.

Black goes to Black (Ground), But fan RED goes to Molex YELLOW for the +12 VDC line. You should note in your last photo of another fan plugged into a 4-pin Molex PSU output that the colour codes do NOT match exactly. On polarity, we can't see in your photo, but the standard coding is Black for Ground (-), and Red for +12 VDC. Check the fan for markings - almost all fans now are designed for use on a power supply of 12 VDC, but since this one is not a current 'standard' fan, look for that spec just in case it is not designed that way. The keys here are Voltage rating and polarity of the fan. Without the third wire, you are hooped.Yeah, I don't know of any off-the-shelf adapter.So you'll have to rig it yourself by cutting and soldering. Motherboard fan headers are three wire, power, ground and pwm/sense/rpm wire. It is likely a two wire set-up so no speed control will be possible. Yeah I can't find a link towards the case maker either. Oh yeah - the case is EsGaming Zeus P30 Draft P and the fans are generic fans that come with the case. If you need any further data or images feel free to ask. Though I'm not really sure how that button is wired into this setup either.Īny tips on handling this mess would be greatly appreciated.

#2 pin fan connector molex how to#

Now I do have two free 'sys_fan' headers on the motherboard so the ideal solution would be to rewire the 3 fans to the two headers.Īny tips how to re-wire this mess into the headers? Two of the fans do end up in one 4-pin connector, but then the 3rd one seems to be connected into molex?Īnd the single shared wire (between fan 1+2 and fan 3) is I assume for the rgb lighting? There is a button on the case that toggles through the fan rgb modes,īut ideally that would later be handled by the mobo as well. The issue comes from the front 3 fans, being connected to the PSU via molex and spinning full throttle at all time, being quite noisy.

#2 pin fan connector molex Pc#

I got myself a new PC a couple of days ago and need a bit of advice on how best to handle some rewiring.