That black 12 pin connector is the 12-pin (12VHPWR) power connector primarily required by
NVIDIA GeForce RTX 30-series Founders Edition graphics cards. It is a convenient perk for user who need such connector but if OP gpu requires conventional 8 pin PCIe connector only use adapter to convert 6 to 8 pin. Not good idea to back convert the 12 pin to 8 pin. That connector is specifically designed to be inserted all the way into a gpu to avoid over heating or melting of plastic around the connector pins.
I have another question about this new PSU. The motherboard connector has two more pins than the old PSU (L750EPS). Is it safe to leave the two pins on the right outside the socket?
I will double-check the pins once I receive a new power cord. The 1350W PSU uses a different type of power cord, which I don’t have.
Re: The motherboard connector has two more pins than the old PSU (L750EPS). Is it safe to leave the two pins on the right outside the socket?
yes it is safe. The extra pins are for Dell Alienware motherboard that has a 12 pin atx socket and are designed to supply extra 12V power to board during cpu overclocking. I assume it has to do with VRM of motherboard. XPS motherboard does not need that kind of extra power and thus uses 10 pin atx socket. When the extra pins are not connected they simply do not draw any power from psu.
redxps630
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March 27th, 2026 11:26
The 12 pin white connector is for Dell proprietary ATX12V only motherboard, not for gpu.
The 1350 w psu has piggy back 6 and 8 pin. The 6 pin can be converted to a 8 pin
lz12345
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March 27th, 2026 22:30
(edited)
redxps630
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March 27th, 2026 23:54
That black 12 pin connector is the 12-pin (12VHPWR) power connector primarily required by
NVIDIA GeForce RTX 30-series Founders Edition graphics cards. It is a convenient perk for user who need such connector but if OP gpu requires conventional 8 pin PCIe connector only use adapter to convert 6 to 8 pin. Not good idea to back convert the 12 pin to 8 pin. That connector is specifically designed to be inserted all the way into a gpu to avoid over heating or melting of plastic around the connector pins.
lz12345
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March 28th, 2026 01:59
@redxps630 Do you think it's better to convert 6 pin to 8 pin? D1350EPF has 2 6-pin connectors.
redxps630
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March 28th, 2026 12:43
Yes that was my thought
lz12345
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March 28th, 2026 21:38
I have another question about this new PSU. The motherboard connector has two more pins than the old PSU (L750EPS). Is it safe to leave the two pins on the right outside the socket?
I will double-check the pins once I receive a new power cord. The 1350W PSU uses a different type of power cord, which I don’t have.
Chino de Oro
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March 29th, 2026 00:26
Re: Is it possible to convert 12-pin to 8-pin connector?
The 12VHPWR connector is actually a 16-pin (12+4) connector and yes, it's possible to convert to 8-pin connectors using this adapter cable.
redxps630
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March 29th, 2026 01:39
Re: The motherboard connector has two more pins than the old PSU (L750EPS). Is it safe to leave the two pins on the right outside the socket?
yes it is safe. The extra pins are for Dell Alienware motherboard that has a 12 pin atx socket and are designed to supply extra 12V power to board during cpu overclocking. I assume it has to do with VRM of motherboard. XPS motherboard does not need that kind of extra power and thus uses 10 pin atx socket. When the extra pins are not connected they simply do not draw any power from psu.
Chino de Oro
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March 29th, 2026 01:58
In case you choose to use two 6-pin to create a third 8-pin connector as being advised by Red, here is the two 6-pin to one 8-pin adapter.