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Two black 8-pin auxiliary power cables for 2019 Mac Pro Radeon 6900 XT

Sonnet Technologies

Sonnet Technologies GPU Card Auxiliary Power Cable Set for 2019 Mac Pro, 2-Pack

SKU CH-N6MS-NZW0R

Two 8-pin to 8-pin auxiliary power cables enable a Radeon RX 6900 XT in a 2019 Mac Pro via PCIe and Thunderbolt interfaces

  • Delivers essential auxiliary power for the AMD Radeon RX 6900 XT
  • 8-pin to 8-pin connectors ensure a secure GPU power link
  • Includes both PCIe and Thunderbolt interface cables for flexible connectivity
  • Purpose-built for the 2019 Mac Pro workstation architecture
  • Two-cable set provides the connections needed for high-end graphics upgrades

Purpose-Built Power Cables for 2019 Mac Pro

This two-cable set supplies auxiliary 8-pin to 8-pin power connections specifically for the 2019 Mac Pro when running an AMD Radeon RX 6900 XT graphics card. It addresses the workstation's unique internal power delivery requirements for high-end GPU upgrades. The cables are engineered to fit the Mac Pro's specific architecture and power distribution design.

Interface and Compatibility Constraints

The set includes one cable with a PCIe interface and one with a Thunderbolt interface, matching the distinct auxiliary power headers found in the 2019 Mac Pro. Both cables are required simultaneously to deliver sufficient current to the Radeon RX 6900 XT. This configuration works only with the 2019 Mac Pro chassis and this specific graphics card model; it does not adapt to other systems or GPUs.

Upgrading from Insufficient Internal Power

The cables replace the absent or inadequate factory auxiliary power links that prevent the Radeon RX 6900 XT from operating in a 2019 Mac Pro. The upgrade is worth it when installing this specific GPU into this specific workstation, as the card cannot function without both auxiliary connections. Buyers who need to power a different graphics card or a different Mac model cannot use this set.

How it compares

Measured against everything we stock in Workstation GPUs, at today’s prices. Recalculated every night.

Price $28.99
Cheaper than about 96% of the 411 comparable items (median $168.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Should I buy the two-pack or look for a single cable?

The set ships as a 2-pack containing one PCIe cable and one Thunderbolt cable, so both connectors are provided together.

Will these cables deliver enough power for the Radeon RX 6900 XT inside my 2019 Mac Pro?

Each cable is an 8-pin to 8-pin auxiliary power lead built to supply the extra current the Radeon RX 6900 XT requires when installed in the 2019 Mac Pro.

Which interface does each cable use and what does that limit?

One cable uses a PCIe power connector and the other uses a Thunderbolt connector, matching the two auxiliary power inputs on the graphics card.

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