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Black braided PSU cable extensions with comb board, 300 mm length

FormulaMod

FormulaMod Fm-NCK1 300mm power extension cord kit

SKU CH-NZ5M-VDBCE MPN Fm-NCK1

Sleeved 300 mm ATX, PCI-E and EPS extension kit with comb board for clean cable routing

  • Product typeStraight

Color Black - Forward bending

  • Premium nylon braid protects 18 AWG wires while staying flexible for clean routing
  • 300 mm extensions reach across large cases without strain on ATX 24-pin, EPS or PCI-E connectors
  • Universal fit works with any ATX power supply regardless of brand or modular design
  • Kit supplies 1× ATX 24-pin, 3× PCI-E 8[6+2]-pin, 2× EPS 8[4+4]-pin plus comb board
  • Male 5557 to female 5559 interface ensures secure, standardised connections throughout the build

Sleeved PSU Extension Kit

The FormulaMod Fm-NCK1 kit supplies pre-sleeved cable extensions for ATX 24-pin, PCI-E 8[6+2]-pin and EPS 8[4+4]-pin connectors. Each cable measures 300 mm and terminates in black connectors. The set targets builders who want a uniform look without rewiring the power supply. A polypropylene comb board with multiple comb sizes is included for cable alignment.

18 AWG Core with Triple-Layer Protection

Every extension uses 18 AWG conductors insulated by a middle heat-resistant layer and wrapped in a soft nylon braid. The Male 5557 to Female 5559 interface ensures a secure fit on standard ATX power supplies. The three-layer construction protects the wires while keeping the cables flexible enough for tight routing behind the motherboard tray.

Drop-In Compatibility for Multi-GPU

The kit includes three PCI-E and two EPS extensions, covering graphics cards that need three 8-pin plugs and motherboards that require two CPU power connectors. Each 8-pin plug splits into 6+2 or 4+4 segments, so unused pins can be tucked away. The comb board lets you organise every cable run to match the colour scheme of the build.

How it compares

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Price $24.99
Pricier than about 80% of the 864 comparable items (median $15.99).

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Specifications

Product
Product typeStraight

Other versions of this model

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Questions about this item

What does the 300 mm length mean once the extensions are routed inside a case?

Each cable measures 300 mm from connector to connector, giving enough reach to route behind the motherboard tray or along the basement channel of most mid-tower cases without pulling tight on the PSU sockets.

How does the Male 5557 to Female 5559 interface affect what I can plug in?

The 5557 plug mates with the PSU's native modular ports while the 5559 receptacle accepts standard ATX 24-pin, EPS 8-pin and PCI-E 8-pin headers, so the kit works with any modular PSU that uses that pin-out.

What clearance do the 3 mm diameter braided cables and comb board need behind the motherboard tray?

The 3 mm outer diameter plus the polypropylene comb board add roughly 5–6 mm of bulk, so allow at least that much space behind the tray or in the cable-management channel for a clean fit.

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