F5F Stay Refreshed Hardware Desktop The 8-pin CPU cable provided with your power supply didn't fit into the correct port on your motherboard.

The 8-pin CPU cable provided with your power supply didn't fit into the correct port on your motherboard.

The 8-pin CPU cable provided with your power supply didn't fit into the correct port on your motherboard.

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levikillerk13
Junior Member
48
08-24-2025, 09:51 AM
#1
The CPU cable my power supply came with doesn't appear to have an end matching the ATX_12V connector on my motherboard. I got the other end plugged into the PSU but the mobo side doesn't seem to match. The end of CPU cable is as such: oxoo xooo While the connection on my motherboard looks to take a connection like this: oxxo xoox With x = square shaped hole o = rounded hole Any idea what that's about? There's a separate 4-pin connection on my mobo directly next to the 8-pin connection above, that looks like: xo ox I'm quite confused as to what I'm supposed to do here. My build for reference: https://pcpartpicker.com/user/redro_guy/saved/wdVdbv
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levikillerk13
08-24-2025, 09:51 AM #1

The CPU cable my power supply came with doesn't appear to have an end matching the ATX_12V connector on my motherboard. I got the other end plugged into the PSU but the mobo side doesn't seem to match. The end of CPU cable is as such: oxoo xooo While the connection on my motherboard looks to take a connection like this: oxxo xoox With x = square shaped hole o = rounded hole Any idea what that's about? There's a separate 4-pin connection on my mobo directly next to the 8-pin connection above, that looks like: xo ox I'm quite confused as to what I'm supposed to do here. My build for reference: https://pcpartpicker.com/user/redro_guy/saved/wdVdbv

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DaNiggaSWAG
Senior Member
539
08-24-2025, 10:12 AM
#2
I think the modular cable might be flipped (Corsair provides the same port on both ATX and PCIe sides), but logically it should function... the rounded tip should fit the square slot.
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DaNiggaSWAG
08-24-2025, 10:12 AM #2

I think the modular cable might be flipped (Corsair provides the same port on both ATX and PCIe sides), but logically it should function... the rounded tip should fit the square slot.

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BigTrav16
Junior Member
17
08-25-2025, 11:51 PM
#3
Yeah it's modular but the side I have plugged into the PSU exactly matches the shapes on the PSU where it's plugged in at. I noticed these didn't match exactly and didn't want to force anything. That won't cause any issues?
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BigTrav16
08-25-2025, 11:51 PM #3

Yeah it's modular but the side I have plugged into the PSU exactly matches the shapes on the PSU where it's plugged in at. I noticed these didn't match exactly and didn't want to force anything. That won't cause any issues?

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StampySmiff
Junior Member
1
08-26-2025, 06:13 AM
#4
You’ve successfully connected both PCIe cables from your GPU to the PSU without any problems. For overclocking your CPU, you’ll still need a separate cable or adapter since your CPU only has one 8-pin connection each way. You may want to purchase an additional adapter to accommodate the extra pins.
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StampySmiff
08-26-2025, 06:13 AM #4

You’ve successfully connected both PCIe cables from your GPU to the PSU without any problems. For overclocking your CPU, you’ll still need a separate cable or adapter since your CPU only has one 8-pin connection each way. You may want to purchase an additional adapter to accommodate the extra pins.

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HannahxX_
Junior Member
12
08-27-2025, 12:44 PM
#5
The cable features an 8-pin connector designed for EPS or CPU power. The modular version should connect to a power supply using a matching connector similar to those found on PCIe video card cables. At the other end, the connector needs to be distinct from the PCIe 8-pin ones used with video cards. Corsair might employ a slightly different keying style to ensure compatibility with older motherboards that only support a 4-pin CPU connector. The 8-pin CPU connector can frequently be divided into two sections, each holding four pins—typically only one of the two four-pin pieces fits into the motherboard’s four-pin CPU slot due to its unique keying. If the cable’s CPU connector slides in smoothly into the motherboard’s CPU header without too much pressure, it’s acceptable; exact matching isn’t required.
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HannahxX_
08-27-2025, 12:44 PM #5

The cable features an 8-pin connector designed for EPS or CPU power. The modular version should connect to a power supply using a matching connector similar to those found on PCIe video card cables. At the other end, the connector needs to be distinct from the PCIe 8-pin ones used with video cards. Corsair might employ a slightly different keying style to ensure compatibility with older motherboards that only support a 4-pin CPU connector. The 8-pin CPU connector can frequently be divided into two sections, each holding four pins—typically only one of the two four-pin pieces fits into the motherboard’s four-pin CPU slot due to its unique keying. If the cable’s CPU connector slides in smoothly into the motherboard’s CPU header without too much pressure, it’s acceptable; exact matching isn’t required.

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littleman120
Junior Member
30
08-27-2025, 07:48 PM
#6
Thanks for the support! I successfully connected my 8-pin CPU to the motherboard, but I'm still confused about the wiring diagram from the manual. The headers for 'POWER SW', 'POWER LED +', and 'POWER LED -' aren't clearly marked, while the one for 'RESET SW' is visible. Could you help clarify where each of these connections should go?
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littleman120
08-27-2025, 07:48 PM #6

Thanks for the support! I successfully connected my 8-pin CPU to the motherboard, but I'm still confused about the wiring diagram from the manual. The headers for 'POWER SW', 'POWER LED +', and 'POWER LED -' aren't clearly marked, while the one for 'RESET SW' is visible. Could you help clarify where each of these connections should go?

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Jerryx01
Posting Freak
870
08-29-2025, 04:28 PM
#7
I found them and everything is linked up. My setup has a USB 3.0 header and a USB 3.1 Type-C header—should I connect both to the motherboard or just one? There’s space for both.
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Jerryx01
08-29-2025, 04:28 PM #7

I found them and everything is linked up. My setup has a USB 3.0 header and a USB 3.1 Type-C header—should I connect both to the motherboard or just one? There’s space for both.

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Volkaninat_07
Junior Member
28
08-29-2025, 10:55 PM
#8
Yes, that's correct. You're confirming they should be connected to their designated locations.
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Volkaninat_07
08-29-2025, 10:55 PM #8

Yes, that's correct. You're confirming they should be connected to their designated locations.