Maximum amount of daisy chained molex connectors?

[FrodoRox]

is there a maximum amount of molex connectors that you can daisy chain together?

would it be okay to have 4 120mm fans, one 200mm fan, a card reader, an internal usb 2.0 header splitter, a temperature probe and lcd screen, and a hard drive hot swap bay, all using one molex connector from psu? would i have to use 2 molex, or even 3?

 

[Ahmadjon]

Your power supply should have enough molex cables (6~8) and you can plug your fans directly onto motherboard fan headers.
What PSU and motherboard do you have?

 

[FrodoRox]

Your power supply should have enough molex cables (6~8) and you can plug your fans directly onto motherboard fan headers.
What PSU and motherboard do you have?

My PSU only has 3 molex connectors, and my fans don't have 3 pin connectors. my motherboard is the asrock fatal1ty z87 proffesional

 

[Ahmadjon]

Your power supply should have enough molex cables (6~8) and you can plug your fans directly onto motherboard fan headers.
What PSU and motherboard do you have?

My PSU only has 3 molex connectors, and my fans don't have 3 pin connectors. my motherboard is the asrock fatal1ty z87 proffesional

Your motherboard has two 4pin and three 3pin fan headers so you can use your 4 case fans with motherboard headers and other things from PSU's molex cables!

Edit: You can also split 3 molex cables and have in total 6 molex cables!
Also 4pin fans should work on 3pin headers without a problem!

 

[FrodoRox]

Your power supply should have enough molex cables (6~8) and you can plug your fans directly onto motherboard fan headers.
What PSU and motherboard do you have?

My PSU only has 3 molex connectors, and my fans don't have 3 pin connectors. my motherboard is the asrock fatal1ty z87 proffesional

Your motherboard has two 4pin and three 3pin fan headers so you can use your 4 case fans with motherboard headers and other things from PSU's molex cables!

Edit: You can also split 3 molex cables and have in total 6 molex cables!
Also 4pin fans should work on 3pin headers without a problem!

My case fans are molex and because they come with my case, they don't come with adapters for the normal 3 or 4 pin fan headers. is there somewhere i can buy molex to 3 pin adapters?

 

[Ahmadjon]

http://www.amazon.com/Cable-CB-4F-3F18-4-pin-Molex-Female/dp/B004AQVIOM/ref=sr_1_2?ie=UTF8&qid=1396844435&sr=8-2&keywords=female+3pin+fan+to+molex
http://www.amazon.com/Alpha-Omega-148-0027-3-Pin-Adapter/dp/B000BSJGL0/ref=sr_1_4?ie=UTF8&qid=1396844435&sr=8-4&keywords=female+3pin+fan+to+molex

 

[4Ryan6]

The max current of the molex cabling is 11a as the industry standard is all molex cabling is 18g wiring, so to be safe make sure your total amperage load of the combined fans, HDDs, readers, optical drives etc. on the branch is below 11a, on each independent wire branch and you'll be just fine.

The amperage load is for the 18g molex wiring branch not the independent molex connectors themselves, you do not want to overload the wiring branch itself.

http://en.wikipedia.org/wiki/Molex_...ector_.28Molex_8981_Series_Power_Connector.29

I became interested in this subject because I came close to burning up my power supply while powering a peltier on molex cabling, the 18g wiring got so hot the insulation was close to melting because I was forcing the cabling to handle a 20a load powering the peltier.

The power supply itself would have continued to power the peltier until the insulation melted away and the wiring shorted out and thankfully I discovered the overload before disaster, a lesson that could have been learned the hard way!

Your fans all should have their voltage, wattage, and amperage load on the motor sticker, just make sure the combined amperage load of all the daisy chained fans and everything else on each wiring branch is below 11a total load and you'll be just fine.