---
product_id: 279400873
title: "for Intel E10G42BTDA 82599ES Chip 10GbE Ethernet Converged Network Adapter X520-DA2/X520-SR2, PCI-E X8 Dual SFP+ Port"
brand: "10gtek"
price: "¥30785"
currency: JPY
in_stock: true
reviews_count: 5
category: "10 Gtek"
url: https://www.desertcart.jp/products/279400873-for-intel-e10g42btda-82599es-chip-10gbe-ethernet-converged-network-adapter
store_origin: JP
region: Japan
---

# 10GbE Speed Dual SFP+ Ports Easy Installation for Intel E10G42BTDA 82599ES Chip 10GbE Ethernet Converged Network Adapter X520-DA2/X520-SR2, PCI-E X8 Dual SFP+ Port

**Brand:** 10gtek
**Price:** ¥30785
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate Your Network Game with 10Gtek!

## Quick Answers

- **What is this?** for Intel E10G42BTDA 82599ES Chip 10GbE Ethernet Converged Network Adapter X520-DA2/X520-SR2, PCI-E X8 Dual SFP+ Port by 10gtek
- **How much does it cost?** ¥30785 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/279400873-for-intel-e10g42btda-82599es-chip-10gbe-ethernet-converged-network-adapter)

## 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

- • **Reliable Support:** Enjoy peace of mind with a 1-year warranty and lifetime tech support.
- • **Effortless Installation:** Includes low-profile bracket for easy setup in compact spaces.
- • **Versatile Compatibility:** Works effortlessly with Windows, Linux, and VMware ESX.
- • **Dual Ports for Maximum Flexibility:** Connect multiple devices with dual SFP+ ports for enhanced performance.
- • **Unleash Lightning-Fast Connectivity:** Experience blazing 10GbE speeds for seamless data transfer.

## Overview

The 10Gtek 10GbE Ethernet Converged Network Adapter is designed for high-performance networking, featuring dual SFP+ ports for versatile connectivity and compatibility with various operating systems. It includes a driver CD and installation brackets, ensuring a hassle-free setup. Backed by a 1-year warranty and lifetime support, this adapter is perfect for data center environments and professional setups.

## Description

P/N: X520-10G-2S (compare to Intel X520-DA2) Ethernet Controller(s): 10Gtek controllerConnector & Cable Medium:SFP+ Direct Attach Copper/SFP+ Cabling Type: SFP+ Direct Attached/LC Fiber Cable Twin Axial Cabling up to 10 m Ports: Dual Port Ethernet Converged Network and Server AdaptersConnectivity you can count onReliable Performance● Broad OS support ● Optimized for Intel`g Architecture ● Low latency Ethernet Best Choice for Virtualization● Leadership in virtual system scalability with Flexible, Port Partitioning (FPP) and intelligent offload ● Broad VM support (VMware ESXi*, Microsoft Hyper-V*,KVM* and Xen*) Unified Networking● Full line of 10GbE Converged Network Adapters (CNA) ● Fibre Channel over Ethernet ● iSCSI with trusted, native OS support ● Support for data center bridging with lossless Ethernet Platform Optimization● Integrated PCI Express* ● Direct Data I/O Technology

Review: Excelente producto - La tarjeta funciona perfectamente a 10 Gb
Review: Rock-Solid 10GbE Performance with Enterprise-Grade Reliability - The 10Gtek 10Gb PCI-E NIC with the Intel X540-BT1 controller is an outstanding network upgrade for anyone needing fast, stable, and reliable 10-gig connectivity. Installation was quick and seamless — plug it into a PCIe slot, install the drivers, and it’s instantly recognized. The Intel X540 chipset is known for its reliability, and this card absolutely lives up to that reputation. From a performance standpoint, it’s excellent. I consistently achieve full 10GbE speeds during large file transfers, virtualization workloads, and NAS-to-PC operations. Latency is extremely low, and there’s zero packet loss or connection instability. The onboard controller handles offloading efficiently, reducing CPU load and keeping system performance smooth even during heavy data transmission. Thermals are well-managed too — the heatsink keeps the card cool, and I haven’t experienced any throttling or heat-related issues. The RJ45 port is sturdy and compatible with Cat6a/Cat7 for maximum throughput. For home labs, servers, workstation builds, or high-speed content workflows, this NIC is a top-tier option at an excellent value. Enterprise-level hardware, flawless stability, and true 10Gb performance.

## Features

- Equipped with high quality controller which supports I/O virtualization and make the servers more stable.
- Compatible with Windows Server 2003/ 2008/ 2012, Windows7/8/10/Visa, Linux, VMware ESX.
- Dual SFP+ ports let you connect to 10 Gigabit SFP+ module/DAC/AOC for meeting the demands of data center environments. PCI-E X8 Lane is suitable for both PCI-E X8 and PCI-E X16 slots.
- Driver CD is included natively. With profile bracket and additional low profile bracket that makes it easy to install the card in a small form factor/low profile computer case/server.
- What You Get: 10Gtek 10GbE PCI-E X8 Network Card X520-10G-2S (compare to Intel X520-DA2 ) x1, Driver CD x1, Low-profile Bracket x1. Backed by 10Gtek 30 Days Free-returned, 1 Year Free Warranty and Lifetime Technology Support. PS: Due to the particularity in QNAP/Synology system, for QNAP/Synology users, please contact our customer service before purchase.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01DCZCA3O |
| Best Sellers Rank | #5 in Internal Computer Networking Cards |
| Brand | 10Gtek |
| Color | X520-10G-2S(2xSFP+) |
| Compatible Devices | Server, Desktop |
| Customer Reviews | 4.3 out of 5 stars 216 Reviews |
| Data Link Protocol | Ethernet |
| Data Transfer Rate | 10 Gigabytes Per Second |
| Hardware Interface | PCIE x 8 |
| Item Dimensions L x W x H | 10.35"L x 6.42"W x 2.17"H |
| Item Weight | 0.35 Pounds |
| Manufacturer | 10Gtek |
| Product Dimensions | 10.35"L x 6.42"W x 2.17"H |
| UPC | 603149407824 |

## Product Details

- **Brand:** 10Gtek
- **Hardware interface:** PCIE x 8
- **Colour:** X520-10G-2S (2x SFP+ Slot)
- **Compatible devices:** Desktop
- **Product dimensions:** 26.3L x 16.3W x 5.5H centimeters

## Images

![for Intel E10G42BTDA 82599ES Chip 10GbE Ethernet Converged Network Adapter X520-DA2/X520-SR2, PCI-E X8 Dual SFP+ Port - Image 1](https://m.media-amazon.com/images/I/61R4Uw22eJL.jpg)

## Questions & Answers

**Q: What's the difference between the x540-t2 and x550-t2 ?**
A: The X520 and X540 have a PCIe 2.0 x8 interface, which has 32Gbit/s bandwidth.
The X550 has a PCIe 3.0 x4 interface, which has 32Gbit/s bandwidth.

The single-port versions may be used in slower slots: X520-T1/DA1 or X540-T1/DA1 will work in a PCIe 2.0 x4 slot (at 16Gbit/s); the manual says the T550-T1 should work in a PCI 2.0 x4 slot as well, although I haven’t tried it.

**Q: Has anyone actually gotten close to the 10gbps connection speed for this card?  pcie 2.0 has limit of 5 gt/s or about 4gpbs max.  so can it be 10gb?**
A: The card is PCIe 2 with x8 lanes, which is 4 GigaByte per second. 4 GigaByte is the same as 32 GigaBit, so it should handle 10 GigaBit just fine.

**Q: Will this card negotiate down to a pcie gen 3 x2?  i think my only free x4 slot only runs in x2 mode which is why i'm asking.**
A: No, please kindly note that the X550-T1 supports PCIe v3.0 (8.0GT/s) (Compatible with 2.0 and 1.1) X4/X8/X16 Lane, and it does not support X2.

**Q: does this work with windows 11?**
A: I have not gotten it to work with windows 11. The seller says to install drivers 26.7 but those dont work

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excelente producto
*by A***R on 8 October 2019*

La tarjeta funciona perfectamente a 10 Gb

### ⭐⭐⭐⭐⭐ Rock-Solid 10GbE Performance with Enterprise-Grade Reliability
*by J***N on 1 December 2025*

The 10Gtek 10Gb PCI-E NIC with the Intel X540-BT1 controller is an outstanding network upgrade for anyone needing fast, stable, and reliable 10-gig connectivity. Installation was quick and seamless — plug it into a PCIe slot, install the drivers, and it’s instantly recognized. The Intel X540 chipset is known for its reliability, and this card absolutely lives up to that reputation. From a performance standpoint, it’s excellent. I consistently achieve full 10GbE speeds during large file transfers, virtualization workloads, and NAS-to-PC operations. Latency is extremely low, and there’s zero packet loss or connection instability. The onboard controller handles offloading efficiently, reducing CPU load and keeping system performance smooth even during heavy data transmission. Thermals are well-managed too — the heatsink keeps the card cool, and I haven’t experienced any throttling or heat-related issues. The RJ45 port is sturdy and compatible with Cat6a/Cat7 for maximum throughput. For home labs, servers, workstation builds, or high-speed content workflows, this NIC is a top-tier option at an excellent value. Enterprise-level hardware, flawless stability, and true 10Gb performance.

### ⭐⭐⭐ conseguir fazer funcionar no 10G
*by R***A on 8 January 2026*

Só conseguir fazer funcionar no 10G na 5ª formatação com windows 10 no 11 esquece. Recomendo 21H1 e anteriores para ficar estável apesar de funcionar na 22H2 com oscilações 1000/10g. obs. coloquem ventoinha! A X550 funciona bem no 11 23H2 e anteriores e é a próxima que vou adquirir.

## Frequently Bought Together

- 10Gtek 10Gb PCI-E NIC Network Card, Dual SFP+ Port, with Intel 82599ES Controller, PCI Express Ethernet LAN Adapter Support Windows Server/Linux/VMware, Compare to Intel X520-DA2(E10G42BTDA)
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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-08*