---
product_id: 618363204
title: "6 Port 2.5 Gigabit PCI-e x4 Ethernet Network Card"
brand: "io crest"
price: "€ 149.79"
currency: EUR
in_stock: true
reviews_count: 10
category: "Io Crest"
url: https://www.desertcart.de/products/618363204-6-port-2-5-gigabit-pci-e-x4-ethernet-network
store_origin: DE
region: Germany
---

# 2.5Gbps blazing speed 6 simultaneous ports Plug & Play PCIe x4 6 Port 2.5 Gigabit PCI-e x4 Ethernet Network Card

**Brand:** io crest
**Price:** € 149.79
**Availability:** ✅ In Stock

## Summary

> 🚀 Upgrade your network, upgrade your workflow!

## Quick Answers

- **What is this?** 6 Port 2.5 Gigabit PCI-e x4 Ethernet Network Card by io crest
- **How much does it cost?** € 149.79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/618363204-6-port-2-5-gigabit-pci-e-x4-ethernet-network)

## Best For

- io crest enthusiasts

## Why This Product

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

## Key Features

- • **Future-Proof Your Network:** Stay ahead with a cutting-edge adapter designed for high-demand environments and evolving connectivity needs.
- • **Blazing 2.5 Gigabit Speeds:** Experience data transfer rates 4x faster than standard Gigabit Ethernet for ultra-smooth streaming and rapid downloads.
- • **Six-Port Network Expansion:** Connect multiple devices effortlessly—perfect for multitasking pros and smart home setups alike.
- • **Effortless Plug-and-Play Setup:** Get your network upgraded in minutes with hassle-free PCIe x4 installation—no drivers or fuss required.
- • **Realtek RTL 8125B Chipset Power:** Industry-trusted chipset ensures rock-solid reliability and broad OS compatibility, from Windows to Linux.

## Overview

The 6 Port 2.5 Gigabit PCI-e x4 Ethernet Network Card by IO CREST leverages the powerful Realtek RTL 8125B chipset to deliver ultra-fast 2.5Gbps speeds across six ports. Designed for seamless plug-and-play installation, it supports multiple devices simultaneously and is compatible with Windows and Linux systems, making it an ideal choice for professionals seeking reliable, high-performance networking solutions.

## Description

Upgrade your network to the next level with our 6 Port 2.5 Gigabit Network Adapter featuring the Realtek RTL 8125B Chipset. Experience lightning-fast speeds, seamless connectivity, and effortless installation. Whether you're a home user or a business professional, this adapter is your ticket to a smoother, more efficient network experience.

Review: Gets HOT, but pulls data at 10GbE. Requires Thunderbolt, not just USB 4! - Have not used it for extended periods of time, but seems to work correctly when combined with a USB4 or Thunderbolt4 port. It does get HOT, so don't put anything on top of it. Windows 11 driver worked just fine out of the box, but I did tweak some settings. I do this on all my Ethernet adapters. If your USB4 port is not also Thunderbolt, this device will not show up as a network adapter. It uses the Aquantia chip. It will show up as a USB device with no function.
Review: Is revision 03, but be wary of Linux/BSD use - Edit: as of XigmaNAS 13.1.0.5.9725 this adapter is now recognized and works as-expected! Thanks to ms49434 and zoon01 for applying a kernel patch to accept the PHY that is present. Original review follows. The adapter arrived in a small, cardboard box. The heatsink is attached securely. A hardware check indicates that the chip is revision 03. Under Windows 10/11, the adapter is usable with no additional effort or configuration on the user's side. Under Linux/FreeBSD, the adapter may or may not work depending on the version of the driver used to attempt init. Under FreeBSD specifically, support for the I225 was added in 13.1 via 𝚒𝚐𝚌, however the driver performs an unnecessary PHY vendor ID check, which may fail if the adapter reports an ID that isn't listed in an internal table. The fix (recommended by Intel themselves) is to no longer perform this check and instead assume a PHY for all I225 adapters. This fix is available in FreeBSD 13.2 and/or 14, and would need to be backported if using anything earlier. Examples; TrueNAS Scale 22.12.0 supports this adapter, while XigmaNAS 13.1.0.5.9687 (latest as of this review) includes 𝚒𝚐𝚌, but fails to init with the adapter I received.

## Features

- Robust Realtek RTL 8125B Chipset: Powered by the renowned Realtek RTL 8125B chipset, this adapter guarantees exceptional performance, reliability, and compatibility with a wide range of devices and operating systems. Count on it for uninterrupted connectivity, whether you're running Windows or Linux
- 2.5 Gigabit Speeds: The 6 Port Network Adapter supports blazing-fast 2.5 Gigabit per second (2.5Gbps) data speeds, four times faster than traditional Gigabit Ethernet. This means faster downloads, smoother video streaming, and reduced latency for online applications.
- Versatile Connectivity: Featuring six high-speed ports, this adapter is your one-stop solution for expanding your network capabilities. Connect multiple devices simultaneously, from desktop computers and gaming consoles to NAS drives and more. Streamline your network infrastructure with ease.
- Plug-and-Play Installation: Setting up your network has never been easier. This adapter features a user-friendly plug-and-play design, ensuring a hassle-free installation process. Simply connect it to an available PCIe slot on your computer or server, and you're ready to go.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CHXF1YVX |
| Best Sellers Rank | #60 in Internal Computer Networking Cards |
| Customer Reviews | 4.0 4.0 out of 5 stars (1,085) |
| Date First Available | September 12, 2023 |
| Item Weight | 7.6 ounces |
| Manufacturer | IO CREST |
| Package Dimensions | 6.85 x 5.63 x 1.54 inches; 7.58 ounces |
| Release date | September 12, 2023 |
| Type of item | Electronics |

## Product Details

- **Brand:** IO CREST
- **Hardware Interface:** Ethernet, PCI
- **Compatible Devices:** Desktop, Gaming Console
- **Data Link Protocol:** Ethernet, Gigabit Ethernet Associate
- **Data Transfer Rate:** 2.5 Gigabits Per Second
- **Item Weight:** 0.22 Kilograms
- **UPC:** 850039353246
- **Manufacturer:** IO CREST

## Images

![6 Port 2.5 Gigabit PCI-e x4 Ethernet Network Card - Image 1](https://m.media-amazon.com/images/I/41ebmlNepRL.jpg)
![6 Port 2.5 Gigabit PCI-e x4 Ethernet Network Card - Image 2](https://m.media-amazon.com/images/I/41nVhrS9uLL.jpg)
![6 Port 2.5 Gigabit PCI-e x4 Ethernet Network Card - Image 3](https://m.media-amazon.com/images/I/51HOS99EjKL.jpg)
![6 Port 2.5 Gigabit PCI-e x4 Ethernet Network Card - Image 4](https://m.media-amazon.com/images/I/51iTJXk9j-L.jpg)
![6 Port 2.5 Gigabit PCI-e x4 Ethernet Network Card - Image 5](https://m.media-amazon.com/images/I/51uJ5qNVMKL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Gets HOT, but pulls data at 10GbE. Requires Thunderbolt, not just USB 4!
*by T***Y on June 22, 2025*

Have not used it for extended periods of time, but seems to work correctly when combined with a USB4 or Thunderbolt4 port. It does get HOT, so don't put anything on top of it. Windows 11 driver worked just fine out of the box, but I did tweak some settings. I do this on all my Ethernet adapters. If your USB4 port is not also Thunderbolt, this device will not show up as a network adapter. It uses the Aquantia chip. It will show up as a USB device with no function.

### ⭐⭐⭐⭐⭐ Is revision 03, but be wary of Linux/BSD use
*by E***Y on February 25, 2023*

Edit: as of XigmaNAS 13.1.0.5.9725 this adapter is now recognized and works as-expected! Thanks to ms49434 and zoon01 for applying a kernel patch to accept the PHY that is present. Original review follows. The adapter arrived in a small, cardboard box. The heatsink is attached securely. A hardware check indicates that the chip is revision 03. Under Windows 10/11, the adapter is usable with no additional effort or configuration on the user's side. Under Linux/FreeBSD, the adapter may or may not work depending on the version of the driver used to attempt init. Under FreeBSD specifically, support for the I225 was added in 13.1 via 𝚒𝚐𝚌, however the driver performs an unnecessary PHY vendor ID check, which may fail if the adapter reports an ID that isn't listed in an internal table. The fix (recommended by Intel themselves) is to no longer perform this check and instead assume a PHY for all I225 adapters. This fix is available in FreeBSD 13.2 and/or 14, and would need to be backported if using anything earlier. Examples; TrueNAS Scale 22.12.0 supports this adapter, while XigmaNAS 13.1.0.5.9687 (latest as of this review) includes 𝚒𝚐𝚌, but fails to init with the adapter I received.

### ⭐ Linux/Fast/Stable
*by D***N on July 28, 2025*

Linux plug and play. Works great on 6x kernels. 600MB/s to and from my TruNAS machine running four Hitachi 10TB platter drives in zraid. Performance is steady and stable. EDIT Nov.25 Updated to 1 star. Less if I could. I've had two of these burn out this year and had to return them. Still recognized as present but fail to connect or get an IP. Real pain too because I have to remove my 4090 bracket to remove the card. Truly happy this works because it's the only x1 card I could find. Most of my board is blocked off by my RTX4090 and brace. Only other exposed slot is x8 but it has a card with 4x m.2 nvme drives on it. EDIT 8/16/2025 The card lasted less than three weeks and died. Does not recognize that a cable is even plugged in. I bought two and the second is working in place of the failed nic. We will see how long that lasts.

## Frequently Bought Together

- 6 Port 2.5 Gigabit PCI-e x4 Ethernet Network Card
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- TRENDnet 5-Port 10G Switch, TEG-S750, 5 x 10G RJ-45 Ports, 100Gbps Switching Capacity, Supports 2.5G and 5G-Base-T Connections, Ethernet Splitter, NDAA & TAA Compliant, Lifetime Protection, Black

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-01-24*