F5F Stay Refreshed Power Users Overclocking The issue with the GPU fan not connecting to the motherboard is present.

The issue with the GPU fan not connecting to the motherboard is present.

The issue with the GPU fan not connecting to the motherboard is present.

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NinatoPvP
Posting Freak
899
10-19-2025, 04:12 PM
#1
I own a Twin Turbo II aftermarket cooler for my GPU. It doesn't fit directly onto the GPU because its pin count is higher than the GPU's 2 pins (it's an HD 7770). I attempted to connect a four-pin adapter to the "sys_fan" pins on my motherboard, but those pins are too large. Now I'm unsure where to plug it in and the fans aren't working, so my GPU can't be used. Any suggestions? Maybe a cheap adapter would help. But I need something that fits the smaller case fan pins, not just a regular fan adapter.
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NinatoPvP
10-19-2025, 04:12 PM #1

I own a Twin Turbo II aftermarket cooler for my GPU. It doesn't fit directly onto the GPU because its pin count is higher than the GPU's 2 pins (it's an HD 7770). I attempted to connect a four-pin adapter to the "sys_fan" pins on my motherboard, but those pins are too large. Now I'm unsure where to plug it in and the fans aren't working, so my GPU can't be used. Any suggestions? Maybe a cheap adapter would help. But I need something that fits the smaller case fan pins, not just a regular fan adapter.

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Oetam67
Junior Member
14
10-20-2025, 12:47 AM
#2
just remove the excess plastic from that large piece and insert it carefully, making sure the plastic securing it is intact and not touching the edges. Turn the pieces against each other as needed. Alternatively, you can replace the old one by placing the new one in its place. You might also be able to take the plastic off the GPU board itself, which should slide away easily with pliers and you can attach your new one. If there’s a way, it works!
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Oetam67
10-20-2025, 12:47 AM #2

just remove the excess plastic from that large piece and insert it carefully, making sure the plastic securing it is intact and not touching the edges. Turn the pieces against each other as needed. Alternatively, you can replace the old one by placing the new one in its place. You might also be able to take the plastic off the GPU board itself, which should slide away easily with pliers and you can attach your new one. If there’s a way, it works!

C
Creeperman3
Senior Member
454
10-20-2025, 06:50 AM
#3
you could insert a new cord and connect it anywhere you like, similar to using an old Christmas light cord, just wrap some tape or better yet solder it on.
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Creeperman3
10-20-2025, 06:50 AM #3

you could insert a new cord and connect it anywhere you like, similar to using an old Christmas light cord, just wrap some tape or better yet solder it on.

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WindOfFlamez
Member
244
10-20-2025, 03:47 PM
#4
just cut the plastic of that is too big and insert it in place, making sure the plastic holding it stays intact and don’t touch each other. Alternatively, you can remove the old one and install the new one. You might also take the plastic off the GPU board, which should slide off easily with pliers and you can attach your new one. If there’s a way, it works!
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WindOfFlamez
10-20-2025, 03:47 PM #4

just cut the plastic of that is too big and insert it in place, making sure the plastic holding it stays intact and don’t touch each other. Alternatively, you can remove the old one and install the new one. You might also take the plastic off the GPU board, which should slide off easily with pliers and you can attach your new one. If there’s a way, it works!

I
iTzCheTTo
Member
80
10-20-2025, 05:16 PM
#5
you could add a new cord and connect it anywhere you like, similar to how you use some old Christmas light cord with tape or even solder, you sound a bit drunk.
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iTzCheTTo
10-20-2025, 05:16 PM #5

you could add a new cord and connect it anywhere you like, similar to how you use some old Christmas light cord with tape or even solder, you sound a bit drunk.

J
james26665
Senior Member
537
11-03-2025, 12:18 AM
#6
there are no adapters i am aware of, but there are many creative ways to modify a pc. you can fully detach the wires and ground the black wire anywhere, such as on the screw or near the gpu's power supply, and then connect the other wire to the positive side of the gpu fan.
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james26665
11-03-2025, 12:18 AM #6

there are no adapters i am aware of, but there are many creative ways to modify a pc. you can fully detach the wires and ground the black wire anywhere, such as on the screw or near the gpu's power supply, and then connect the other wire to the positive side of the gpu fan.

K
ketman34
Posting Freak
834
11-09-2025, 06:47 PM
#7
Just got really excited since 5 and sipping coffee.
K
ketman34
11-09-2025, 06:47 PM #7

Just got really excited since 5 and sipping coffee.

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Omg_Itz_Nerd
Junior Member
43
11-20-2025, 02:19 AM
#8
only the first two are power pins, the rest control speed and you just need to connect ground and a 12v or something like 5v. the others don’t matter.
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Omg_Itz_Nerd
11-20-2025, 02:19 AM #8

only the first two are power pins, the rest control speed and you just need to connect ground and a 12v or something like 5v. the others don’t matter.

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Madthunder2t3
Member
195
11-20-2025, 03:00 AM
#9
Only the first two are power pins, the rest control speed, but you regulate fans with voltages—just connect ground and a 12V or similar (usually around 5V). The others don’t matter.
Pin 3-4 are only needed with a "4" pin plugin, which you don’t have. Plugging your fan into the motherboard won’t work because it won’t activate properly, letting the motherboard control your case fans and graphics fans, which you really need to connect to the graphics side.
That should clear things up!
M
Madthunder2t3
11-20-2025, 03:00 AM #9

Only the first two are power pins, the rest control speed, but you regulate fans with voltages—just connect ground and a 12V or similar (usually around 5V). The others don’t matter.
Pin 3-4 are only needed with a "4" pin plugin, which you don’t have. Plugging your fan into the motherboard won’t work because it won’t activate properly, letting the motherboard control your case fans and graphics fans, which you really need to connect to the graphics side.
That should clear things up!

G
God_Cyning
Junior Member
15
11-20-2025, 03:30 AM
#10
ok ... i gureanteee you there is a place to plug it in on you grafics card(might not be the size) but your grafics card has a fanconnetor? correct?... now you take your new fanthat has 4 pins conector, and cut it in half, ( with either a razor blade or siccors which ever one is handy and made of metal) then you take the side with the black cable and plug it into your grafics card and in finish instlling the cooler. (if it does not fit inside that plastic piece of the grafics card pefectly,you know the connecttor, male/female, then you take pliers and pull the plastic off the female end of the grafics card and it will slide right of those two pins.) stick card in and watch magic happen. ...
if your gfx does not have a fan jake/plugin, then it is meant to be passivly cooled and you dont need that cooler to begin with. if you have any more questions after this please post grafics card specs and the excate cooler you bought and where you bought with links please. thank you .
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God_Cyning
11-20-2025, 03:30 AM #10

ok ... i gureanteee you there is a place to plug it in on you grafics card(might not be the size) but your grafics card has a fanconnetor? correct?... now you take your new fanthat has 4 pins conector, and cut it in half, ( with either a razor blade or siccors which ever one is handy and made of metal) then you take the side with the black cable and plug it into your grafics card and in finish instlling the cooler. (if it does not fit inside that plastic piece of the grafics card pefectly,you know the connecttor, male/female, then you take pliers and pull the plastic off the female end of the grafics card and it will slide right of those two pins.) stick card in and watch magic happen. ...
if your gfx does not have a fan jake/plugin, then it is meant to be passivly cooled and you dont need that cooler to begin with. if you have any more questions after this please post grafics card specs and the excate cooler you bought and where you bought with links please. thank you .

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