Formulamod Sleeve Extension Power Supply Cable Kit 18AWG ATX 24P+ EPS 8-P+PCI-E8-P
Bottom line: The Formulamod Sleeve Extension Power Supply Cable Kit 18AWG ATX 24P+ EPS ($17.99 on Amazon as of 2026-10-07): Covers a full ATX build: 24-pin, 4+4 EPS, and two 8-pin PCI-E in one kit; main trade-off: extensions add length behind the tray, so tight cases get crowded.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Covers a full ATX build: 24-pin, 4+4 EPS, and two 8-pin PCI-E in one kit
- ✓ Pre-bent layering keeps 180-degree bends flat instead of fanned
- ✓ Thick 18AWG wire holds routed shapes without kinking
- ✓ Cable combs included, so no separate comb purchase
- ✓ Extension design works with any PSU, no cable swap needed
Cons
- ✗ Extensions add length behind the tray, so tight cases get crowded
- ✗ Only two PCI-E 8-pin runs, short for triple-connector GPUs
- ✗ Black-only sleeving, no color options in this listing
- ✗ Adds a second connector junction per line versus native cables
Manufacturer description
The Formulamod Sleeve Extension Power Supply Cable Kit turns a cluttered PSU compartment into a clean, show-ready build without replacing your power supply. The kit ships four extensions that cover a standard ATX system: one 24-pin ATX for the motherboard, one 4+4-pin EPS for CPU power, and two 8-pin PCI-E runs for your graphics card. Each cable uses thick 18AWG wire wrapped in a high-density flexible sleeve, so the runs hold a shape when you route them but still bend where you need them to. The detail that separates this Formulamod kit from generic sleeved extensions is the pre-bent design…
SpecPicks Verdict
SpecPicks scored Formulamod Sleeve Extension Power Supply Cable Kit 18AWG ATX 24P+… using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. Formulamod's accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Will these cables work with my power supply?
Yes. These are extensions, not replacement cables, so they plug in between your PSU's existing cables and your components. Formulamod lists them as compatible with all power supplies.
What cables are included in the kit?
Four extensions: one 24-pin ATX for the motherboard, one 4+4-pin EPS for CPU power, and two 8-pin PCI-E for the graphics card. Cable combs are included.
Do I need to buy cable combs separately?
No. The kit ships with several combs for routing and organizing the runs, so you can set spacing on the 24-pin and PCI-E cables without a separate purchase.
How thick are the wires?
All cables use 18AWG wire inside a high-density flexible sleeve. That gauge is stiff enough to hold a routed bend but still flexible enough to work in a case.
Are these cables good for a build with visible cable runs?
That is the main use case. The pre-bent design makes upper-layer wires slightly longer than lower-layer ones so a 180-degree bend stays neat, and the heat-shrink-less ends keep connectors slim.
Key Features
- Including (1) 24-P ATX, (1) 4 + 4P EPS, (2) 8-P PCI-E
- All cables are manufactured with thick 18AWG wires and come in a high-density flexible protective sleeve allowing for a stiff yet adaptable temperament. Comes with several cable combs to cleanly route and organize.
- Premium sleeved cable extension, compatible with all power supplies
- Pre-bent Design: The upper layer cables are slightly longer than the down layer ones, which make the cables remain a perfect neat look after bent 180° .
- Heat-Shrink-Less Cable Design
Full Specifications
| Brand | Formulamod |
|---|---|
| Color | black |
| Gauge | 18 |
| Model | Fm-NCK1-300 |
| Cable Type | PCI Express |
| Item Shape | Round |
| Model Name | Fm-NCK1 |
| Unit Count | 1 Count |
| Part Number | Fm-NCK1-300 |
| Connector Type | Atx, Eps, Pci-e |
| Number of Pins | 4 |
| Outer Material | plastic" or "rubber |
| Maximum Current | 10.17 A |
| Maximum Voltage | 12 volts_of_direct_current |
| Number of Items | 2 |
| Pre-bent Design | The upper layer cables are slightly longer than the down layer ones, which make the cables remain a perfect neat look after bent 180° . |
| Special Feature | Braided, Pre-bent design |
| Connector Gender | Male-to-Female |
| Specification Met | UL |
| Compatible Devices | PC |
| Full listing title | Formulamod Sleeve Extension Power Supply Cable Kit 18AWG ATX 24P+ EPS 8-P+PCI-E8-P with Combs for PSU to Motherboard/GPU (Black) |
Ready to buy?
Formulamod Sleeve Extension Power Supply Cable Kit 18AWG ATX 24P+ EPS 8-P+PCI-E8-P with Combs for PSU to Motherboard/GPU (Black) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.
Related Accessories
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- Best Retro Handhelds in 2026 — From $35 to $500
- Best 1440p Gaming GPUs in 2026
- How to Build a Windows 98 Retro PC in 2026
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
More reviews from the SpecPicks archive
Browse all reviews →- Local AI News You Missed in April 2026
- Best Storage for a Windows 98 Retro PC: CompactFlash vs IDE-to-USB SSD Adapters
- RTX 3060 vs Arc B580 for 1440p Gaming: Which 12GB Card Wins?
- Raspberry Pi 4 8GB vs Pi Zero W: Which Fits Your First Project?
- Best Budget SSD for Gaming and PC Upgrades in 2026
- DGX Spark vs Mac Studio M3 Ultra: Which AI Dev Machine Wins in 2026?
- Mistral Medium 3.5 Hardware Requirements: 128B Dense, 78 GB at Q4
- 9800X3D vs Core Ultra 9 285K — gaming vs productivity
- Best Game Controller for Couch & Big-Screen PC Gaming in 2026
- Best Budget GPU for Local LLM Inference in 2026
- Jan vs LM Studio: The Best No-Terminal Local LLM App for an RTX 3060 (2026)
- Best Budget SSD for PS5 and Steam Download Cache in 2026
- Corsair LL120 RGB vs Noctua NH-U12S: Cooling a 5800X for All-Day Gaming
- Best Storage Upgrades for Retro and Budget PC Builds in 2026
- Ex-Sega Engineer's 'Super Realistic' CRT Emulator — What It Means for Retro Mini-Consoles
- GLM-5.2 vs Claude Opus 4.7: Open-Weights Value on Local GPUs
- Period-Correct Windows XP Gaming PC: 2002-2005 Build Guide for 2026
- Radeon Pro W7900 48GB vs RTX A6000 48GB for Local 70B Inference (2026)
- CompactFlash as Your IDE Hard Drive: A Silent, Reliable Retro PC Boot Disk
- Train Your Own LLM From Scratch: 2026 Hardware Guide
- Best GPU for Local LLMs Under $400 in 2026
- Corsair Launches Lightweight Budget HS35 v3 Gaming Headset
- How We Use a Vision-LLM to Install Sound Blaster and Voodoo Drivers on Windows 98 — A Real Workflow From Our…
- Best SSD for the Steam Deck and Handheld PCs (2026)
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090