---
product_id: 551901057
title: "RTL8125-2.5G-4T-X4"
brand: "10gtek"
price: "$461366"
currency: COP
in_stock: null
reviews_count: 9
category: "10 Gtek"
url: https://www.desertcart.co/products/551901057-rtl8125-2-5g-4t-x4
store_origin: CO
region: Colombia
---

# 2.5G multi-gigabit speed Broad OS compatibility Quad RJ-45 ports RTL8125-2.5G-4T-X4

**Brand:** 10gtek
**Price:** $461366
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Quad-port 2.5G NIC: Upgrade your network, upgrade your game!

## Quick Answers

- **What is this?** RTL8125-2.5G-4T-X4 by 10gtek
- **How much does it cost?** $461366 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/551901057-rtl8125-2-5g-4t-x4)

## Best For

- 10gtek enthusiasts

## Why This Product

- Trusted 10gtek brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Blazing 2.5G Speeds:** Experience lightning-fast network throughput with Realtek RTL8125BG controller, perfect for bandwidth-hungry workflows.
- • **Jumbo Frame Support:** Optimize large data transfers and reduce CPU load for smoother, professional-grade networking.
- • **Plug & Play Powerhouse:** Seamlessly integrates with Windows, Linux, VMware, and more—no hassle, just instant connectivity.
- • **Wake-on-LAN & DPDK Ready:** Advanced features like WOL and DPDK empower remote management and high-performance packet processing.
- • **Four Ports, Endless Possibilities:** Quad RJ-45 ports let you connect multiple devices simultaneously, maximizing your network flexibility.

## Overview

This 100M/1000M/2.5G quad-port NIC equipped with the Realtek RTL8125BG controller delivers multi-gigabit speeds and broad OS support including Windows, Linux, and VMware. Designed for professional environments, it supports jumbo frames, Wake-on-LAN, and DPDK, making it ideal for high-performance networking setups requiring reliable, flexible connectivity.

## Description

Buy 100M/1000M/2.5G NIC Network Card, Quad RJ-45 Port, with Realtek RTL8125BG Controller, Support Windows/Windows Server/Linux/Ubuntu/Centos/Vmware: Network Cards - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Love these, working as intended. - Used these as an extra NIC on my proxmox cluster that is comprised of Lenovo mini PC's, they work great at the speeds they are rated for. Fit inside of a vga sized cutout that was unpopulated, so they were plug and play, no case mods needed.
Review: WOOOO - I used this in a SFF build that only had a small wireless card port. I'm getting nearly full 2.5 gigabit speeds with this little guy. Works great!

## Features

- Controller(s)：Realtek RTL8125BG + ASMedia ASM1812.
- Quad RJ-45 Ports.(Note: Four ports working at the same time, the rate can not be full.)
- PCIe2.1, x4 Lane.
- Support Jumbo FramesWOL, DPDK, iSCSI, FCoE. Not-support PXE, VLAN.
- Compatible with Windows 7/8/10/11, Windows Server 2008 R2/2012/2016/2019, Linux 2.6.x to 5.x, Centos 6/7/8, Ubuntu 16/18/19/20, VMware ESXi 6. NOT SUPPORT ESXI 7/8, FREEBSD and HOT SWAPING.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BQ32FVKR |
| Best Sellers Rank | #82 in Internal Computer Networking Cards |
| Customer Reviews | 4.1 4.1 out of 5 stars (86) |
| Date First Available | December 14, 2022 |
| Item Weight | 5.9 ounces |
| Item model number | RTL8125-2.5G-4T-X4-US |
| Manufacturer | 10Gtek |
| Package Dimensions | 8.9 x 5.98 x 1.26 inches |

## Product Details

- **Brand:** 10Gtek
- **Color:** PCIe-X4
- **Compatible Devices:** Server, Desktop
- **Data Link Protocol:** Ethernet
- **Data Transfer Rate:** 2.5 Gigabytes Per Second
- **Hardware Interface:** PCIE x 4
- **Item Weight:** 0.17 Kilograms
- **Manufacturer:** 10Gtek

## Images

![RTL8125-2.5G-4T-X4 - Image 1](https://m.media-amazon.com/images/I/61jSmjyYwVL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Love these, working as intended.
*by K***Y on February 15, 2026*

Used these as an extra NIC on my proxmox cluster that is comprised of Lenovo mini PC's, they work great at the speeds they are rated for. Fit inside of a vga sized cutout that was unpopulated, so they were plug and play, no case mods needed.

### ⭐⭐⭐⭐⭐ WOOOO
*by F***N on January 27, 2026*

I used this in a SFF build that only had a small wireless card port. I'm getting nearly full 2.5 gigabit speeds with this little guy. Works great!

### ⭐⭐⭐⭐ Works in Lenovo M700 Tiny with Unraid 7.1.4
*by S***Y on August 26, 2025*

Very niche product that works for my very specific use case. I wanted to upgrade my Lenovo M700 Tiny with some higher speed networking as it has a DAS attached storage and Unraid on it. I was able to install it in the wireless card class that was close to the power button. The very tight fit, but was able to fold the cable under the card and route it to the back. I was able to pull the PCI brackets off the Ethernet port and use the screws and holes to attach it to an unused serial slot punch out. I used a piece of electrical tape to cover the bottom of the Ethernet port PCB to keep from shorts. It looks factory! Unraid 7.1.4 picked it up without any issue and able to see 2500 Mbps connection. (Router confirms as well) Initial speed tests seem to confirm it. Hopeful that the RTL8125 will be reliable as the Intel I219-V has been. Three complaints. First is on Amazon, the packed was crushed. Luckily it was packed in a strong plastic case. Second, the cable is very short. Even in my tiny client PC, it took some creative routing. I would appreciate a bit more length on the cable. Third, please include a screw for the M.2 please. I can understand a commodity SSD not including a screw, but this is a bit more niche. Even a cheap screw driver was included. Overall, a great way to add higher speed networking to a mini PC. Unraid worked out of the box.

## Frequently Bought Together

- 100M/1000M/2.5G NIC Network Card, Quad RJ-45 Port, with Realtek RTL8125BG Controller, Support Windows/Windows Server/Linux/Ubuntu/Centos/Vmware
- 10Gtek 10Gb Dual RJ45 Port Network Card with X540 Controller, PCIe Ethernet LAN Adapter for Windows/Linux/ESX Servers, Compare to Intel X540-T2

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-03-09*