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First time Watercooling help : CPU 4 or 8-Pin connector must be disconnected before using ATX 24 Pin Bridging Plug ?

post #1 of 5
Thread Starter 
Instead of using Paperclip to turn on the PSU to help fill up a loop, I was thinking of getting a $2 ATX 24 Pin Bridging Plug. This will I thought save me the issue of me accidentally plugging in paperclip in the wrong holes in PSU 20/24 pin connector (reference http://aphnetworks.com/tutorials/psu_paperclip_trick) . So I looked here https://www.pccasegear.com/products/23906/atx-24-pin-bridging-plug-black/ to get a ATX 24 Pin Bridging Plug . But then this caught my attention
Quote:
Important: If the PSU is bridged and the CPU 4 or 8-Pin connector is still inserted it will result in permanent damage to your motherboard and CPU!

So if I correctly understand I don't have to connect the CPU 12V EPS connectors at the top when I want to turn on the PSU ? Is this correct ?

Do I also need to disconnect the PSU power cords for the GPU so that I don't damage my GPU too ? So if I don't connect the PSU to the Mobo 12v EPS connector, don't connect the 24 pin connector to the Mobo because obviously the 24 pin PSU connector is connected to the ATX 24 Pin Bridging Plug, and if I am not connecting the GPU and even HDD/SSD etc to the PSU when I am running the PSU using ATX 24 Pin Bridging Plug, how will the motherboard get the power ? Or the motherboard needs to be completely off as it seems that is going to be the case ? And the Pump Res will run from the molex connector connected directly to the PSU , am I correct ? In such a case I should not connect the PWM 4 pin connector from the Res/Pump to the Mobo CPU header either correct ? In other words, there will be only two things connected the PSU - the PSU 24 pin connector to the ATX 24 Pin Bridging Plug and a PSU Molex female plug connected to the Pump/Res Molexmale plug, everything else disconnected. Am I correct ?

My motherboards is Rampage VI Apex X299 ( https://www.pccasegear.com/products/40189/asus-rog-rampage-vi-apex-motherboard/) .

The pump/res I am using is the EK XRES 140 Revo D5 RGB PWM Pump/Reservoir Combo (https://www.pccasegear.com/products/40750/ek-xres-140-revo-d5-rgb-pwm-pump/reservoir-combo/) .

Please advise regarding this and anything else that you deem I must know for a guy who is planning on doing his first time watercooling loop.

Thanking you in advance

BabeBunny
post #2 of 5
The whole point of the paperclip trick or these bridging plugs is to be able to run your PSU and provide power to your pump and nothing else. You want everything unplugged from the PSU except your pump. This way if your loop leaks, it will be onto unpowered GPU, CPU, HDD, etc... Unpowered components do not fry when they get wet, though, you don't want unpowered components getting wet either. You still want to arrange some paper towels or other absorbent material to cover these sensitive items when filling/leak testing.

The reason the paperclip/bridging plug is necessary in the first place is because the PSU won't power on without a signal back from a connected motherboard. That signal is imitated by the paperclip/bridging plug. thumb.gif
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Big Blue
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post #3 of 5
Thread Starter 
Quote:
Originally Posted by essanbee View Post

The whole point of the paperclip trick or these bridging plugs is to be able to run your PSU and provide power to your pump and nothing else. You want everything unplugged from the PSU except your pump. This way if your loop leaks, it will be onto unpowered GPU, CPU, HDD, etc... Unpowered components do not fry when they get wet, though, you don't want unpowered components getting wet either. You still want to arrange some paper towels or other absorbent material to cover these sensitive items when filling/leak testing.

The reason the paperclip/bridging plug is necessary in the first place is because the PSU won't power on without a signal back from a connected motherboard. That signal is imitated by the paperclip/bridging plug. thumb.gif

Ah thanks essanbee for your valuable reply. So it shows my idea is correct after I read the post from PCCase Gear. All components should be disconnected form the PSU other then the Pump from the pump/res combo. Very valuable knowledge indeed.
post #4 of 5
I keep an old psu just for running my pump for filling loop, so I can have everything fully built and just connect the pump to old external psu (connected to nothing else) and run it....but you would need an extra psu.
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post #5 of 5
Thread Starter 
Quote:
Originally Posted by opt33 View Post

I keep an old psu just for running my pump for filling loop, so I can have everything fully built and just connect the pump to old external psu (connected to nothing else) and run it....but you would need an extra psu.

I bumped into this video today while doing my research and saw this lady did the same: https://www.youtube.com/watch?v=UTr1igS0gIw . I do have an extra PSU so yes that is indeed a viable alternative for me. Thanks for your reply mate. Appreciated smile.gif
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