4x8 Pin to 12VHPWR Extension Cable 16 Pin (12+4) Male to 4x8 Pin Female PCIe 5.0 Adapter, 600W 16AWG Short 3.94in (10cm) Sleeved Extender for RTX 5090/5080/4090/4080/4070 Ti/3090 Ti, 4 Connectors

1. CONVERT 16-PIN TO 4X 8-PIN POWER YOUR RTX 40/50 SERIES GPU WITH OLDER PSUS This extension cable converts your power supplys native 12VHPWR 16-pin (12+4) cable into four (4) standard 8-pin PCIe female connectors. Perfect for powering RTX 4090/4080/4070 Ti/3090 Ti and next-gen RTX 50 series (5090/5080/5070 Ti) when your PSU has a 12VHPWR output but your GPU requires multiple 8-pin connections, or when you need to split power to multiple devices. ALL FOUR 8-PIN CONNECTORS MUST BE CONNECTED this is a 4x8-pin cable, not a 3x8-pin.
2. ULTRA-SHORT 3.94IN (10CM) LENGTH PERFECT FOR TIGHT BUILDS At just 3.94 inches (10cm) total length, this is one of the shortest 4x8-pin to 12VHPWR extension cables available. Ideal for ITX, small form factor (SFF), and compact builds where every millimeter counts. The short length naturally helps maintain the required straight approach to connectors, reducing cable clutter and improving airflow.
3. 600W PCIe 5.0 POWER DELIVERY 16AWG PREMIUM CONSTRUCTION Built with highquality 16AWG tinned copper wire, capable of delivering up to 600W of stable power. Premium 12VHPWR connectors feature highcurrent terminals rated for reliable power delivery. The black sleeved jacket provides a professional, abrasionresistant finish.
4. 12V-2x6 COMPATIBLE PCIe 5.1 & ATX 3.1 READY Fully compatible with both 12VHPWR and the updated 12V-2x6 connector standard. The 12V-2x6 standard (PCIe CEM 5.1) features shorter sense pins that ensure full insertion before power is delivered a critical safety improvement. Futureproof your build for nextgen GPUs.
5. EXTENSION CABLE PLUG & PLAY WITH YOUR PSUS 12VHPWR CABLE This is a Male to Female extension cable simply plug your PSUs existing 12VHPWR cable into the 16-pin Male end, then connect your GPUs 8-pin PCIe cables to the 4x8-pin Female end. Works with ALL PSU brands that have a 12VHPWR/12V-2x6 output (for Corsair, EVGA, Seasonic, ASUS, Thermaltake, Cooler Master, etc.).
6. CRITICAL SAFETY RULES MUST FOLLOW 1) USE ALL FOUR 8PIN CONNECTORS connecting fewer will result in insufficient power and may damage your GPU; 2) Fully seat all connectors push straight and firmly until you hear a CLICK; 3) Verify NO GAP remains between any connector and its socket incomplete insertion is the #1 cause of connector failure; 4) Do NOT bend cables sharply near connectors maintain a straight approach; 5) Regularly inspect connectors for signs of melting or discoloration.

Does your power supply have a native 12VHPWR 16-pin cable, but your GPU or multiple devices require 8-pin PCIe connections? Or do you simply need to split power from a single 12VHPWR output to multiple components?

Our 4x8-Pin to 12VHPWR Extension Cable is the solution. It converts your PSUs 16-pin (12+4) output into four (4) standard 8-pin PCIe female connectors, giving you the flexibility to power RTX 4090, 4080, 4070 Ti, 3090 Ti, and nextgen RTX 50 series GPUs (5090/5080/5070 Ti) even in multiGPU or complex power distribution setups.

CRITICAL: ALL FOUR 8PIN CONNECTORS MUST BE CONNECTED

This cable has four 8pin outputs. All four must be connected to your GPU or other devices. Connecting fewer than four will result in insufficient power delivery, which may cause system instability, black screens, or permanent damage to your hardware. This is a 4x8pin cable not a 3x8pin cable.

This cable is fully compatible with both the original 12VHPWR standard and the updated 12V2x6 connector standard introduced in PCIe CEM 5.1-. The 12V2x6 standard features shorter sense pins that ensure full insertion before power is delivered a critical safety improvement over earlier 12VHPWR designs-.

Key Safety Features:

1. 12V2x6 compatibility meets the latest PCISIG safety standards
2. 16AWG tinned copper high current capacity with minimal voltage drop
3. Sleeved construction abrasionresistant and professional appearance

GPU Compatibility:

1. For NVIDIA RTX 50 Series: 5090, 5080, 5070 Ti
2. For NVIDIA RTX 40 Series: 4090, 4080, 4070 Ti, 4070

3. Learn more about the Detailed Specifications

   Additional Information

   First Listed on Newegg	May 21, 2026