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Monoprice 108494 SATA to PCI Express Power Cable — main product image
Monoprice 108494 SATA to PCI Express Power Cable
Monoprice 108494 SATA to PCI Express Power Cable
Monoprice 108494 SATA to PCI Express Power Cable
Monoprice

Monoprice 108494 SATA to PCI Express Power Cable

★★★★★4.2 (1131 reviews)
8 inch

Power your PCIe graphics card from a spare SATA connection with this compact 8-inch Monoprice adapter cable.

$1.99*$4.58Save 56%
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*Price sourced from Amazon.com. Last updated:Jul 15, 2026.Price and availability are subject to change.

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Overview

The Monoprice 108494 SATA to PCI Express Power Cable is designed for a specific but common problem: your power supply has available SATA power connectors but no dedicated 6-pin PCIe connector for a graphics card or other expansion card. Rather than replacing the entire PSU, this 8-inch adapter cable converts a standard SATA 15-pin power connection into a 6-pin PCIe plug, letting you get your card up and running without a major hardware swap.

At just 8 inches long, the cable is intentionally short to reduce clutter inside your case. It is best suited for entry-level to mid-range graphics cards and other PCIe devices that draw power through a single 6-pin connector. Users should be aware that SATA power rails are typically rated for less current than dedicated PCIe cables from a PSU, so this adapter is not a substitute for a properly rated power supply when running power-hungry components. Monoprice stands behind the cable with their lifetime warranty, making it a low-risk purchase for builders looking for a quick power compatibility fix.

Key Features

If your PC's power supply has no PCI-express power connectors

or not enough of them for your needs

you can use this handy cable to provide PCIe power from one of your open SATA connections

Specifications

Cable Type
SATA to PCI Express Power
Input Connector
SATA 15-pin
Output Connector
6-pin PCI Express
Length
8 inches (0.67 feet)
Color
Black
Product Dimensions
4.2 x 3.8 x 1.2 inches
Warranty
Lifetime (Monoprice)

Pros & Cons

👍 Pros

  • Provides a simple solution when your PSU lacks a dedicated 6-pin PCIe power connector
  • Compact 8-inch length keeps cable clutter to a minimum inside the case
  • Backed by Monoprice's lifetime warranty on all cables
  • Low-cost alternative to replacing an entire power supply for basic PCIe power needs

👎 Cons

  • Limited to 6-pin PCIe power, so it cannot support cards requiring 8-pin or dual connectors
  • 8-inch length may be too short for large tower cases with bottom-mounted power supplies
  • Drawing PCIe power through a SATA rail may stress power supplies not rated for the additional load
  • Single adapter design means you need to buy multiples if your card has more than one power input

Frequently Asked Questions

This cable supplies power through a single 6-pin PCIe connector, which delivers up to 75W. High-end graphics cards requiring 8-pin or multiple power connectors will need a different adapter or a more capable power supply.
You can use two cables on separate SATA power rails, but drawing too much power from a single rail through multiple adapters can overload the wiring. Check your power supply's rail ratings before doing so.
Yes, it connects to any standard SATA 15-pin power connector. It does not use the SATA data port, so you can use it on any available SATA power lead.
For most mid-tower cases, 8 inches is sufficient since SATA power cables typically run near the PCIe slots. In full-tower or unusually routed builds, you may need an extension.
Yes, Monoprice backs this cable with their lifetime warranty on all cables.

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