---
product_id: 250139618
title: "Syba Quad M.2 NVMe Ports to PCIe 3.0 x16 Interface x8 Bandwidth Bifurcation Riser Controller - Support Non-Bifurcation Motherboard (SI-PEX40157)"
brand: "syba"
price: "65806 kr"
currency: ISK
in_stock: true
reviews_count: 9
category: "Syba"
url: https://www.desertcart.is/products/250139618-syba-quad-m-2-nvme-ports-to-pcie-3-0
store_origin: IS
region: Iceland
---

# PCIe 3.0 x8 upstream bandwidth 4x M.2 NVMe ports with dedicated x4 lanes Up to 6,500 MB/s transfer speed Syba Quad M.2 NVMe Ports to PCIe 3.0 x16 Interface x8 Bandwidth Bifurcation Riser Controller - Support Non-Bifurcation Motherboard (SI-PEX40157)

**Brand:** syba
**Price:** 65806 kr
**Availability:** ✅ In Stock

## Summary

> 🚀 Unlock PCIe 3.0 NVMe speeds like never before — because your storage deserves the fast lane!

## Quick Answers

- **What is this?** Syba Quad M.2 NVMe Ports to PCIe 3.0 x16 Interface x8 Bandwidth Bifurcation Riser Controller - Support Non-Bifurcation Motherboard (SI-PEX40157) by syba
- **How much does it cost?** 65806 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/250139618-syba-quad-m-2-nvme-ports-to-pcie-3-0)

## 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

- • **Quad M.2 NVMe Powerhouse:** Harness full PCIe 3.0 x8 bandwidth for blazing-fast storage expansion.
- • **Maximized SSD Performance:** Each M.2 slot gets dedicated PCIe 3.0 x4 lanes, unlocking true NVMe speed potential.
- • **Future-Proof Your Workflow:** Supports NVMe RAID via motherboard chipsets for scalable, high-speed storage arrays.
- • **Effortless High-Speed Storage Upgrade:** Transform any PCIe x16 slot into a quad NVMe SSD powerhouse with up to 20x SATA speeds.
- • **Plug & Play on Non-Bifurcation Boards:** No need for complex motherboard PCIe bifurcation support—works seamlessly anywhere.

## Overview

The Syba SI-PEX40157 is a PCIe 3.0 x16 x8 bandwidth riser card featuring ASMedia ASM2824 switches, enabling four M.2 NVMe SSDs to run at full PCIe 3.0 x4 speeds independently. It bypasses motherboard PCIe bifurcation limitations, delivering up to 6,500 MB/s transfer speeds and supporting NVMe RAID configurations via chipset. Ideal for professionals seeking to maximize storage throughput on non-bifurcation systems, this card transforms a single PCIe slot into a high-performance multi-drive NVMe array.

## Description

The I/O CREST SI-PEX40157 is a great accelerated secondary storage solution for any workstation with true PCIe 3.0 x8 bandwidth (x16 Interface). It has four 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-PEX40157 will allow user add 4 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 onboard 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-PEX40157 combines 4 - 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!

Review: if you are looking for the maximum performance out of your PCIe 3.0 M.2's this is THE card for you. - I purchased two of these boards. Each board has the option for two M.2 drives. They provide amazing performance on my older i7 board which only has PCIe 2.0a support. My previous M.2 board did not have the onboard chip which is apparently a PCIe lane "switch" which basically allows more use of the slot bus. The M.2 cards I installed are PCIe 3.0 x4 cards so on my old card this would translate to PCIe 2.0 x4 since the motherboard did not support PCIe 3.0. Due to the fact that each PCIe 3.0 "lane" is twice the speed of a PCIe 2.0 lane I would not get half the performance. The onboard "switch" processor allows use of more lanes and allows near PCIe 3.0 performance. Keep in mind that having two M.2's on one card mean they still share the slot bandwidth. Windows does not support booting from software created striped volumes and the cards don't have a RAID chip on them to create hardware RAID. Actually, I wish this card did support hardware RAID such as striped volumes, it would be a great feature. What I did is purchase two cards and placed four M.2's on them. I placed my C drive on one (Windows). Then I placed a smaller cheaper M.2 on the second card as extra storage because due to the PCIe "lane switching" placing only one M.2 on the card will cause lockups and system freezes. In slot two on both cards I place high speed 1TB M.2's and created a striped volume. Placing them on separate cards allow them to utilize separate "switch" processors to ensure maximum performance. Then I reinstalled Windows and interrupted the installation to set the Users and Program folders to my striped volume. Then on my first login, I moved the page file to my striped volume. Now I have maximum performance out of my two M.2's with a total 2 TB on the striped volume. Thus far the setup works great HDD access is amazingly fast and probably faster than anything the creators of this motherboard expected. Also, I created a large 50-100 GB swap file because the drive is really fast so paging does not provide a noticeable slow down and effectively gives me all the memory space I need. I typically just leave everything open and running allowing me to quickly return to things. Overall, if you are looking for the maximum performance out of your PCIe 3.0 M.2's this is THE card for you. Pros: - On a PCIe 2.0 system this is likely the fastest way to add an M.2 HDD - Allows extreme performance even on a PCIe 3.0 slot. - PCIe lane Switch processor allows nearly full use of the slot - M.2 Cooling features like thermal pads heat spreader and fan. - Allows two (or more) M.2's in one slot (a lot of other cheaper cards have one M.2 one slot) Cons: - Does not have hardware RAID, I realize this may require a different processor, but it is a big feature. - Requires both M.2 slots to be populated due the PCIe lane switching. - While the SATA hard drive interface comes on the motherboard this requires the purchase of a 200 dollar card.
Review: Good value - Incidible value if you can find m.2 SSDs for cheap. Useful to add fast storage in the bottom pcie slot of your motherboard if you need it and have the extra pcie lanes. Careful with adding a 5th drive however, especially if you do a redundant raid configuration. All five drives under load will slow the whole array down due lane constraints. It works best in a storage pool without redundancy.

## 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-PEX40157 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 x8 bus bandwidth fully maximizes NVMe SSDs performance
- Delivers unprecedented fast transfer speed via intelligently aggregated QUAD x4 PCIe 3.0 bus bandwidth
- NVMe RAID is supported base on the motherboard chipsets

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08L8J3MBT |
| Best Sellers Rank | #1,344 in Computer Motherboards |
| Brand | Syba |
| Customer Reviews | 4.0 4.0 out of 5 stars (187) |
| Date First Available | October 14, 2020 |
| Item Dimensions LxWxH | 8.5 x 5.05 x 1 inches |
| Item Weight | 1.17 pounds |
| Item model number | SI-PEX40157 |
| Manufacturer | Syba |
| Operating System | Windows, Linux |
| Product Dimensions | 8.5 x 5.05 x 1 inches |
| Series | SI-PEX40157 |

## Product Details

- **Brand:** Syba
- **Compatible Devices:** Personal Computer, Server
- **Hardware Interface:** PCI, PCIE x 4
- **Style:** 4-Port M2 NVMe
- **UPC:** 857426008642

## Images

![Syba Quad M.2 NVMe Ports to PCIe 3.0 x16 Interface x8 Bandwidth Bifurcation Riser Controller - Support Non-Bifurcation Motherboard (SI-PEX40157) - Image 1](https://m.media-amazon.com/images/I/61HFgR4msqL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ if you are looking for the maximum performance out of your PCIe 3.0 M.2's this is THE card for you.
*by A***A on June 5, 2021*

I purchased two of these boards. Each board has the option for two M.2 drives. They provide amazing performance on my older i7 board which only has PCIe 2.0a support. My previous M.2 board did not have the onboard chip which is apparently a PCIe lane "switch" which basically allows more use of the slot bus. The M.2 cards I installed are PCIe 3.0 x4 cards so on my old card this would translate to PCIe 2.0 x4 since the motherboard did not support PCIe 3.0. Due to the fact that each PCIe 3.0 "lane" is twice the speed of a PCIe 2.0 lane I would not get half the performance. The onboard "switch" processor allows use of more lanes and allows near PCIe 3.0 performance. Keep in mind that having two M.2's on one card mean they still share the slot bandwidth. Windows does not support booting from software created striped volumes and the cards don't have a RAID chip on them to create hardware RAID. Actually, I wish this card did support hardware RAID such as striped volumes, it would be a great feature. What I did is purchase two cards and placed four M.2's on them. I placed my C drive on one (Windows). Then I placed a smaller cheaper M.2 on the second card as extra storage because due to the PCIe "lane switching" placing only one M.2 on the card will cause lockups and system freezes. In slot two on both cards I place high speed 1TB M.2's and created a striped volume. Placing them on separate cards allow them to utilize separate "switch" processors to ensure maximum performance. Then I reinstalled Windows and interrupted the installation to set the Users and Program folders to my striped volume. Then on my first login, I moved the page file to my striped volume. Now I have maximum performance out of my two M.2's with a total 2 TB on the striped volume. Thus far the setup works great HDD access is amazingly fast and probably faster than anything the creators of this motherboard expected. Also, I created a large 50-100 GB swap file because the drive is really fast so paging does not provide a noticeable slow down and effectively gives me all the memory space I need. I typically just leave everything open and running allowing me to quickly return to things. Overall, if you are looking for the maximum performance out of your PCIe 3.0 M.2's this is THE card for you. Pros: - On a PCIe 2.0 system this is likely the fastest way to add an M.2 HDD - Allows extreme performance even on a PCIe 3.0 slot. - PCIe lane Switch processor allows nearly full use of the slot - M.2 Cooling features like thermal pads heat spreader and fan. - Allows two (or more) M.2's in one slot (a lot of other cheaper cards have one M.2 one slot) Cons: - Does not have hardware RAID, I realize this may require a different processor, but it is a big feature. - Requires both M.2 slots to be populated due the PCIe lane switching. - While the SATA hard drive interface comes on the motherboard this requires the purchase of a 200 dollar card.

### ⭐⭐⭐⭐⭐ Good value
*by T***S on December 18, 2025*

Incidible value if you can find m.2 SSDs for cheap. Useful to add fast storage in the bottom pcie slot of your motherboard if you need it and have the extra pcie lanes. Careful with adding a 5th drive however, especially if you do a redundant raid configuration. All five drives under load will slow the whole array down due lane constraints. It works best in a storage pool without redundancy.

### ⭐ Caused unstable Mac Pro computer
*by J***. on October 10, 2019*

Installed in 2009 Mac Pro tower with 2 AData 512GB NVMe SSDs, planning to use one for Mac OS and the other for Windows 10 Pro. Initially worked great as speedy non-boot drives. Attempts to use as a Bootcamp drive for Windows 10 completed install but would not boot. As a Mac OS 10.13.16 High Sierra boot disk it would boot with significant delay, resulting in a slower boot time than my Sata SSD. Occasionally the system would refuse to boot. I'd have to use the startup option key and force boot from the Sata SSD. After 2 months, the drives disappeared from the desktop and then the machine would not boot if the card was installed. I separately tested the SSDs and they were fine. I am assuming it is broken - a waste of money.

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-03-08*