---
product_id: 122390375
title: "I/O CREST SI-PEX40129 Dual M.2 NVMe Ports to PCIe 3.0 x16 Bifurcation Riser Controller - Support Non-Bifurcation Motherboard"
brand: "syba"
price: "R9458"
currency: ZAR
in_stock: true
url: https://www.desertcart.co.za/products/122390375-i-o-crest-si-pex40129-dual-m-2-nvme-ports
store_origin: ZA
region: South Africa
---

# PCIe 3.0 x16 bandwidth Dual M.2 NVMe ports Up to 6500 MB/s transfer speed I/O CREST SI-PEX40129 Dual M.2 NVMe Ports to PCIe 3.0 x16 Bifurcation Riser Controller - Support Non-Bifurcation Motherboard

**Brand:** syba
**Price:** R9458
**Availability:** ✅ In Stock

## Summary

> 🚀 Unlock next-level storage speed and capacity—because your workstation deserves the best!

## Quick Answers

- **What is this?** I/O CREST SI-PEX40129 Dual M.2 NVMe Ports to PCIe 3.0 x16 Bifurcation Riser Controller - Support Non-Bifurcation Motherboard by syba
- **How much does it cost?** R9458 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/122390375-i-o-crest-si-pex40129-dual-m-2-nvme-ports)

## Best For

- syba enthusiasts

## Why This Product

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

## Key Features

- • **NVMe RAID Ready:** Supports motherboard chipset-based NVMe RAID for ultimate data performance and redundancy.
- • **Dual M.2 NVMe Ports:** Expand your storage effortlessly with two dedicated NVMe slots.
- • **Bypass Bifurcation Limits:** Works seamlessly on non-bifurcation motherboards—no CPU or chipset dependency.
- • **Unmatched Transfer Speeds:** Experience transfer rates up to 20x faster than SATA SSDs, maxing at 6500 MB/s.
- • **Maximized NVMe Performance:** Harness full PCIe 3.0 x16 bandwidth for blazing-fast SSD speeds.

## Overview

The I/O CREST SI-PEX40129 is a high-performance PCIe 3.0 x16 riser card featuring dual M.2 NVMe ports powered by ASM2824 switches. It delivers dedicated PCIe 3.0 x4 lanes per SSD without relying on CPU or chipset bifurcation, enabling transfer speeds up to 6500 MB/s—20 times faster than SATA SSDs. Compatible with non-bifurcation motherboards and supporting NVMe RAID, it’s the ultimate upgrade for professionals demanding accelerated secondary storage.

## Description

Make sure this fits by entering your model Number. As media's ASM2824 has a PCIe 3.0 x8 upstream port as well as 4 PCIe 3.0 x4 downstream ports. The switch is designed primarily for storage devices. SI-PEX40129 card uses ASM2824 switches and therefore does not rely on PCIe bifurcation supported by CPU or PCH (they will work on closed end systems that have limited PCIe bifurcation capabilities). dedicated PCIe 3.0 x16 bus bandwidth fully maximizes NVMe SSDs performance delivers unprecedented fast transfer speed via intelligently aggregated dual x16 PCIe 3.0 Bus bandwidth NVMe RAID is supported base on the motherboard chipsets the I/of crest SI-PEX40129 is a great accelerated secondary storage solution for any workstation with true PCIe 3.0 x8 bandwidth (x16 interface). It has two M.2 NVMe ports to accept two NVMe M.2 SSDs, so each NVMe M.2 SSD has dedicated PCIe 3.0 x4 bus bandwidth. It delivers transfer speeds 20 times faster than SATA SSDs. By by-passing the traditional PCIe 3.0 x4 NVMe solutions, Using the SI-PEX40129 will allow user add 2 m.2 NVMe into any non-bifurcation PCIe x16 slot to achieve their full potential with a bandwidth of up to 6, 500 MB/s. Unlike on-board DMI 3.0 based NVMe solutions or single NVMe PCI-E x4, which are forced to share a single PCIe 3.0 x4 lane with the motherboard's data ports, The SI-PEX40129 combines 2- m.2 drives to be able to run on PCIe 3.0 x16 lane. This unique architecture allows the drive to interface directly with the platform's CPU, which provides PCIe x4 bandwidth for each NVMe SSD!.

## Features

- As media's ASM2824 has a PCIe 3.0 x8 upstream port as well as 4 PCIe 3.0 x4 downstream ports. The switch is designed primarily for storage devices
- SI-PEX40129 card uses ASM2824 switches and therefore does not rely on PCIe bifurcation supported by CPU or PCH (they will work on closed end systems that have limited PCIe bifurcation capabilities)
- Dedicated PCIe 3.0 x16 bus bandwidth fully maximizes NVMe SSDs performance
- Delivers unprecedented fast transfer speed via intelligently aggregated dual x16 PCIe 3.0 Bus bandwidth
- Nvme RAID is supported base on the motherboard chipsets

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Syba |
| Product Dimensions | 21.59 x 12.83 x 2.54 cm; 408.23 g |
| Item model number | SI-PEX40129 |
| Manufacturer | SYBA Multimedia, Inc. |
| Series | SI-PEX40129 |
| Graphics Card Interface | PCI Express |
| Wattage | 1 |
| Operating System | Windows, Linux |
| Are Batteries Included | No |
| Item Weight | 408 g |
| Guaranteed software updates until | unknown |

## Product Details

- **Brand:** Syba
- **Hardware interface:** PCI, PCIE x 4
- **Style:** Traditional
- **Item weight:** 408 g
- **Compatible devices:** Personal Computer

## Images

![I/O CREST SI-PEX40129 Dual M.2 NVMe Ports to PCIe 3.0 x16 Bifurcation Riser Controller - Support Non-Bifurcation Motherboard - Image 1](https://m.media-amazon.com/images/I/51o+hCYOGAL.jpg)
![I/O CREST SI-PEX40129 Dual M.2 NVMe Ports to PCIe 3.0 x16 Bifurcation Riser Controller - Support Non-Bifurcation Motherboard - Image 2](https://m.media-amazon.com/images/I/51P8E72zrCL.jpg)
![I/O CREST SI-PEX40129 Dual M.2 NVMe Ports to PCIe 3.0 x16 Bifurcation Riser Controller - Support Non-Bifurcation Motherboard - Image 3](https://m.media-amazon.com/images/I/41W6L11h-ML.jpg)
![I/O CREST SI-PEX40129 Dual M.2 NVMe Ports to PCIe 3.0 x16 Bifurcation Riser Controller - Support Non-Bifurcation Motherboard - Image 4](https://m.media-amazon.com/images/I/5193AsbrCpL.jpg)
![I/O CREST SI-PEX40129 Dual M.2 NVMe Ports to PCIe 3.0 x16 Bifurcation Riser Controller - Support Non-Bifurcation Motherboard - Image 5](https://m.media-amazon.com/images/I/41ZT7ahwI5L.jpg)

## Frequently Bought Together

- I/O CREST SI-PEX40129 Dual M.2 NVMe Ports to PCIe 3.0 x16 Bifurcation Riser Controller - Support Non-Bifurcation Motherboard
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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-16*