---
product_id: 644159843
title: "PCI-E 4.0 x16 1 to 2 Expansion Card Gen3 Split Card PCIe-Bifurcation x16 to x8x8 with 20mm Spaced Slots CPU4P Power Supply Port (with 4Pin Cable Higher)"
brand: "jmt"
price: "S$330"
currency: SGD
in_stock: true
reviews_count: 5
category: "Jmt"
url: https://www.desertcart.sg/products/644159843-pci-e-4-0-x16-1-to-2-expansion-card
store_origin: SG
region: Singapore
---

# PCIe 4.0 x16 full bandwidth Power-on LED indicator Supports x8/x8 bifurcation mode PCI-E 4.0 x16 1 to 2 Expansion Card Gen3 Split Card PCIe-Bifurcation x16 to x8x8 with 20mm Spaced Slots CPU4P Power Supply Port (with 4Pin Cable Higher)

**Brand:** jmt
**Price:** S$330
**Availability:** ✅ In Stock

## Summary

> 🚀 Double your PCIe power, double your possibilities!

## Quick Answers

- **What is this?** PCI-E 4.0 x16 1 to 2 Expansion Card Gen3 Split Card PCIe-Bifurcation x16 to x8x8 with 20mm Spaced Slots CPU4P Power Supply Port (with 4Pin Cable Higher) by jmt
- **How much does it cost?** S$330 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/644159843-pci-e-4-0-x16-1-to-2-expansion-card)

## Best For

- jmt enthusiasts

## Why This Product

- Trusted jmt brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Optimized Spacing:** 20mm slot spacing supports larger cards and PCIe extension cables without compromise.
- • **Robust Build Quality:** 5U thick gold fingers and dust-proof Gen4 connectors ensure reliable, long-lasting performance.
- • **Smart Power Management:** Includes CPU4P auxiliary power port and power-on LED for stable and visible operation.
- • **Maximize Your Expansion:** Split one PCIe x16 slot into two x8 slots for ultimate multi-device setups.
- • **Future-Proof Connectivity:** Compatible with PCIe Gen3 and Gen4 protocols to keep pace with evolving tech.

## Overview

The JMT PCI-E 4.0 x16 to dual x8 expansion card enables professional users to bifurcate a single PCIe x16 slot into two x8 slots, supporting PCIe Gen3 and Gen4 protocols under compatible BIOS settings. Featuring enhanced gold finger thickness, dust-proof Gen4 connectors, a CPU4P auxiliary power port, and a power-on LED, it’s designed for stable, high-bandwidth multi-device configurations with optimal 20mm slot spacing.

## Description

JMT PCI-E 4.0 x16 1 to 2 Expansion Card Gen*3 Split Card PCIe-Bifurcation x16 to x8x8 with 20mm Spaced Slots CPU4P Power Supply Port Features: 1, PCIE X16 full bandwidth 4. 0 , GEN*3 protocol, compatible with gen3\gen4(Specific circumstances are required to fully operate in GEN4 state). 2,Conditions of use: Motherboard BlO*S supports changing PCIE operating mode to X8X8. 2,Gold finger sinking process, increase gold thickness to 5U. 3,Adopt new generation GEN*4 connector with dust plug and snap. 4,With clock splitting IC. 5,With power on LED indicator. 6,With CPU4P auxiliary power supply port. 7, 2cm slot spacing. Supports PCIE extension cable adapter.

Review: Stated 4.0 but read on from the title. As i think the lister of the item is trying to hit search results. This is for Gen3 and as such it will ever not work, like in my situation, or you will have slower speeds.
Review: J'ai une carte mATX pour construire mon DIY NAS. Je n'ai qu'un port PCIE x16 sur cette carte mère. - il y a un port X4 pour une carte intel 2 ports RJ45 10Gb/s - un port nvme transformé en port PCIE x4 pour une carte SFP+ 10Gb/s Pas besoin de carte graphique, donc j'aimerais utilisé ce port (16 lignes) pour autre chose. 1 carte HBA (4X4 ports SATA) pour les disques, c'est bien, mais c'est une carte x8 et n'est pas optimal pour du disque en miroir. 2 HBA seraient plus utiles, mais il faut 2 ports x8. Et ben voilà, cette carte est exactement fait pour ça : diviser x16 en x8 + x8. bien sûr, il faut activer la bifurcation dans le BIOS en fonction du résultat voulu : ici 2 fois x8. j'ai essayé le 4 fois X4, mais d'après mes lectures, certaine puces intel ne permettent que x8x4x4. Sur les photos, on voit (CPU watercoolé): - cable rizer pour brancher cette carte de bifurcation pcie - 2 carte HBA SAS sur cette carte de bifurcation - NAS boitier fermé à moins de 30° en vitesse de croisière.

## Features

- PCIE X16 full bandwidth 4. 0 , GEN*4 protocol, compatible with gen3 /gen4(Specific circumstances are required to fully operate in GEN4 state).
- Conditions of use: Motherboard BlO*S supports changing PCIE operating mode to X8X8.
- Gold finger sinking process, increase gold thickness to 5U.
- Adopt new generation GEN*4 connector with dust plug and snap. 2cm slot spacing. Supports PCIE extension cable adapter.
- With clock splitting IC. With power on LED indicator. With CPU4P auxiliary power supply port.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CRR77TB2 |
| Batteries Included | No |
| Batteries Required | No |
| Brand | JMT |
| Compatible Devices | Personal Computer, Laptop |
| Country of Origin | USA |
| Customer Reviews | 3.0 3.0 out of 5 stars (14) |
| Date First Available | 9 April 2024 |
| Hardware Interface | PCI Express 3.0 |
| Item Weight | 68 g |
| Item model number | F47986 |
| Manufacturer | JMT |
| Model | F47986 |
| Number of items | 1 |
| Operating System | Windows, macOS, Linux |
| Package Dimensions | 23.01 x 16.99 x 3.99 cm; 68.04 g |

## Product Details

- **Brand:** JMT
- **Compatible Devices:** Personal Computer, Laptop
- **Hardware Interface:** PCI Express 3.0
- **Item Weight:** 68 g
- **Style:** Classic

## Images

![PCI-E 4.0 x16 1 to 2 Expansion Card Gen3 Split Card PCIe-Bifurcation x16 to x8x8 with 20mm Spaced Slots CPU4P Power Supply Port (with 4Pin Cable Higher) - Image 1](https://m.media-amazon.com/images/I/51hMAWL0nxL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐ Review
*by M***G on 15 April 2025*

Stated 4.0 but read on from the title. As i think the lister of the item is trying to hit search results. This is for Gen3 and as such it will ever not work, like in my situation, or you will have slower speeds.

### ⭐⭐⭐⭐⭐ Review
*by N***N on 22 May 2024*

J'ai une carte mATX pour construire mon DIY NAS. Je n'ai qu'un port PCIE x16 sur cette carte mère. - il y a un port X4 pour une carte intel 2 ports RJ45 10Gb/s - un port nvme transformé en port PCIE x4 pour une carte SFP+ 10Gb/s Pas besoin de carte graphique, donc j'aimerais utilisé ce port (16 lignes) pour autre chose. 1 carte HBA (4X4 ports SATA) pour les disques, c'est bien, mais c'est une carte x8 et n'est pas optimal pour du disque en miroir. 2 HBA seraient plus utiles, mais il faut 2 ports x8. Et ben voilà, cette carte est exactement fait pour ça : diviser x16 en x8 + x8. bien sûr, il faut activer la bifurcation dans le BIOS en fonction du résultat voulu : ici 2 fois x8. j'ai essayé le 4 fois X4, mais d'après mes lectures, certaine puces intel ne permettent que x8x4x4. Sur les photos, on voit (CPU watercoolé): - cable rizer pour brancher cette carte de bifurcation pcie - 2 carte HBA SAS sur cette carte de bifurcation - NAS boitier fermé à moins de 30° en vitesse de croisière.

### ⭐ Review
*by A***J on 17 January 2026*

Mine did not work. The PC would not boot with it plugged in. The SATA power port and PCI-E x16 Slots were very loose. I believe the soldering job was poor and losing contact. Wasted $45. I wouldn't recommend this product.

## Frequently Bought Together

- JMT PCI-E 4.0 x16 1 to 2 Expansion Card Gen3 Split Card PCIe-Bifurcation x16 to x8x8 with 20mm Spaced Slots CPU4P Power Supply Port (with 4Pin Cable Higher)
- AsiaHorse New PCIE 3.0 16x High Speed Flexible Extender Riser Cable Card Extension Port Adapter 200mm(90 Degree Angle Black)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-04*