4-Pin to 8-Pin CPU Power Adapter Cable | ATX to EPS 12V

4-Pin Male to 8-Pin Female CPU Power Adapter Cable

Upgrade your PC build without replacing your entire power supply! This ATX 12V 4-pin to EPS 12V 8-pin CPU power adapter cable is the perfect solution when your new motherboard features an 8-pin CPU power connector but your existing PSU only supplies a 4-pin connector. At just 19cm (7.48 inches) in length, it offers a clean, manageable fit inside most ATX cases.

Key Features

• Universal Compatibility: Converts a standard ATX 12V 4-pin male connector to an EPS 12V 8-pin female connector — ideal for bridging older PSUs with modern motherboards.
• Metal Construction: Durable metal connectors ensure a secure, stable connection and long-lasting performance.
• Stable Power Delivery: Engineered for consistent and reliable power transfer to your CPU.
• Compact Length: 19cm (7.48 in) cable length keeps your build tidy and manageable.
• ⚠️ Motherboard Use Only: Due to differing pin definitions, this adapter is designed exclusively for motherboard CPU power connections. Do NOT use with an 8-pin graphics card connector — doing so may damage your GPU.

Specifications

Who Is This For?

This adapter is perfect for PC builders and enthusiasts who are upgrading to a newer motherboard that requires an 8-pin EPS CPU power connector, but whose current power supply unit only has a 4-pin ATX 12V output. Rather than investing in a new PSU, this affordable adapter bridges the gap seamlessly.

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For more guidance on PC power connector standards, visit the U.S. Department of Energy – Electronics & Energy Efficiency resource.

Please note: Minor measurement variances may occur due to manual measurement. Color may appear slightly different depending on your monitor's display settings.

Frequently Asked Questions

Q: Can I use this 4-pin to 8-pin adapter cable with my graphics card?

A: No. This adapter cable is designed exclusively for motherboard CPU power connections. The pin definitions are different from those used on 8-pin GPU power connectors. Using it with a graphics card could damage or burn the GPU connector. Always connect this adapter only to the CPU power slot on your motherboard.

Q: Will this 4-pin to 8-pin CPU power adapter cable work with any ATX power supply?

A: Yes — as long as your power supply unit has a standard ATX 12V 4-pin male output connector, this cable will adapt it to the 8-pin EPS 12V female connector required by many modern motherboards. It is a widely compatible solution for PC upgrades where the PSU has not been updated alongside the motherboard.

Q: What is the length of this CPU power adapter cable?

A: The cable measures 19cm (approximately 7.48 inches) in length, which is suitable for routing within standard ATX mid-tower and full-tower PC cases. Please allow for small tolerances due to manual measurement.