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Black 16-pin 12VHPWR plug splitting to four 8-pin PCIe connectors, braided sleeving

SMUGDESK

SMUGDESK PCIe 5.0 12VHPWR 16Pin to 4x8Pin power splitter cord

SKU CH-B7T8-4HEG8

Converts four 8-pin PSU connectors to a single 12VHPWR 16-pin plug for RTX 3090 Ti, 4080 and 4090 graphics cards

  • Converts legacy PSU to 12VHPWR for RTX 3090Ti 4080 4090
  • High-purity copper reduces voltage drop and heat under load
  • Lockable connectors prevent accidental disconnection during transport
  • Plug-and-play design simplifies GPU upgrades and DIY builds
  • Organised cable layout improves internal airflow and cooling

Power adapter for flagship RTX cards

This PCIe 5.0 12VHPWR 16Pin to 4x8Pin splitter lets you connect an RTX 3090Ti, RTX 4080 or RTX 4090 to a power supply that only has four PCI-E 8Pin outputs. It removes the need to replace the PSU when upgrading to a modern high-end graphics card. The cable is built with high-purity copper conductors and lockable connectors for stable delivery under heavy loads.

Before ordering verify PSU connectors

Check that your existing power supply provides four separate PCI-E 8Pin ports and that its total wattage matches the graphics card manufacturer’s requirement. Ensure the PSU cables can reach the card without excessive tension inside the case. This adapter does not create extra power; it only converts the existing connectors to the 12+4Pin interface.

Locking plugs and thick copper wiring

Integrated locking latches on each connector prevent accidental disconnection caused by vibration or cable movement during transport. High-purity oxygen-free copper conductors reduce resistance and voltage drop, limiting heat build-up during extended gaming or rendering sessions. The moulded strain relief protects internal wires from fatigue at the termination points.

Highlights

  • Converts legacy PSU to 12VHPWR for RTX 3090Ti 4080 4090
  • High-purity copper reduces voltage drop and heat under load
  • Lockable connectors prevent accidental disconnection during transport
  • Plug-and-play design simplifies GPU upgrades and DIY builds
  • Organised cable layout improves internal airflow and cooling

Specifications

No published specifications for this item yet.

Questions about this item

Does the package include the 12VHPWR 16Pin to 4x8Pin adapter only, or are extra cables required?

The box contains the single PCIe 5.0 12VHPWR 16Pin (12+4Pin) to 4x8Pin adapter cable. Your power supply must already provide four PCI-E 8Pin outputs; no additional cables are included.

Which graphics cards does this 12VHPWR 16Pin adapter support?

It is compatible with RTX 3090Ti, RTX 4080 and RTX 4090 cards that use the 12+4Pin 12VHPWR connector.

How does the 12VHPWR 16Pin design perform under heavy RTX 4090 loads?

High-purity oxygen-free copper conductors reduce voltage drop and heat, while lockable connectors prevent power interruptions during sustained gaming or rendering.

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