Atx P4 Power
Overview
Product sourcing insights & recommendations


The phrase 'atx p4 power' primarily refers to the ATX12V 4-pin CPU power connector, a foundational interface introduced in 2000 to provide dedicated +12V power to the processor TomshardwareAlibaba. While legacy in nature, it remains a critical component for mid-tier desktops and pragmatic hardware reuse in 2026 NeweggAlibaba.
Core Product Insights
* Technical Role: Delivers DC power directly to the CPU's Voltage Regulator Module (VRM), decoupling high-current loads from other motherboard components Alibaba.
* Specifications: Features a 4-pin Molex Micro-Fit 3.0 interface with 18-20 AWG wiring, supporting CPUs up to ~95W TDP ModdiyAlibaba.
* Pragmatic Reuse: In 2026, there is a distinct trend of using UL-listed P4 extension cables (e.g.,
Atx P4 Power Connector 4 Pin 12v Cpu Power Cable Extension
Products · 3 lists

4Pin to 8Pin CPU Power Supply Cable Power Conversion Adapter Cable ATX Motherboard CPU Extension Cord for Desktop PC
Shenzhen Fuyuanxin Technology Development Co., Ltd.verified🇨🇳CN8 yrs
20CM 4Pin Molex M/F Cable ATX 12V Power Supply 4Pin CPU Male to Female CPU Motherboard Power Extension Cable
Guangzhou Chuangyingxin Electronics Co., Ltd.🇨🇳CN6 yrs
4 Pin Female to 8 Pin Male ATX Motherboard CPU Power Supply Extension Cable with Copper Conductor and PVC Insulation 20cm
Wuhan Lanxu Technology Co., Ltd.🇨🇳CN6 yrs
ATX 4 Pin Male to 4Pin Female PC CPU Power Supply Extension Cable Cord Connector Adapter
Dongguan Hanpu Electronic Technology Co., Ltd.🇨🇳CN8 yrs
ATX 4Pin Male to 8Pin Female EPS Power Cable Cord Adapter PC Motherboard CPU Power Supply Line Extension Cable 4 Pin to 8 Pin
Shenzhen Vivid Technology Co., Ltd.🇨🇳CN6 yrs
7.8'' New ATX 12V 4 Pin Male to 8 Pin Female M/F PC Computer CPU Power Cable Connector
Shenzhen Lanho Technology Co., Ltd.🇨🇳CN12 yrs
7.8'' New ATX 12V 4 Pin Male to 8 Pin Female M/F PC Computer CPU Power Cable Connector
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Sources & References
27 sources cited · Verified industry data & reports

What does a 4 pin ATX power connector do? : r/buildapc
Reddit · r/buildapc
I've chosen a MSI B450 GAMING PRO CARBON AC ATX AM4 Motherboard for my next build but on pc part picker it tells me that the motherboard has another 4 ...

Power Supply Connectors and Pinouts
moddiy
The 24 pin main power connector was added in ATX12V 2.0 to provide extra power needed by PCI Express slots. The older 20 pin main power cable only has one 12 ...

What exactly does the 4 pin 12v power connector do?
Tom's Hardware
The 4 Pin ATX12V connector supplies extra power to motherboards. It was originally developed for Pentium P4 systems
All about the various PC power supply cables and connectors
gcctech.org
The power coming from this connector is usually used to power the CPU. The power cable which plugs into the 4 pin connector has two black wires and two yellow ...

What is the extra 4-pin CPU power connector?
Quora
What is the extra 4-pin CPU power connector?

Compatability of 4Pin connector (P3 : PWRCPU) with ...
HP Support Community
The 4+4-pin CPU power from an industry standard ATX power supply is compatible with your motherboard: this power cable is designed to 'split'.
