ServerDukan
Intel X520-DA2 Dual Port 10Gb SFP+ Server Network Adapter – Refurbished
Intel X520-DA2 Dual Port 10Gb SFP+ Server Network Adapter – Refurbished
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The Industry Standard for 10G Networking: Intel X520-DA2 Dual Port Adapter
Upgrade your server bandwidth with the legendary Intel X520-DA2 Dual Port 10GbE SFP+ Adapter. Powered by the robust Intel 82599ES Controller, this network interface card (NIC) is the "gold standard" for stability and compatibility in data centers worldwide. It provides a flexible, high-performance upgrade path from 1GbE to 10GbE without the high latency.
At ServerDukan, we know that network stability is non-negotiable. Our refurbished X520-DA2 cards are pulled from working enterprise environments and rigorously tested for throughput and packet loss. Whether you are building a virtualization cluster, a high-speed NAS, or a DIY router, get genuine Intel reliability at the best price in India.
Why Buy from ServerDukan?
- Genuine Intel Hardware: Avoid cheap knock-offs. We sell authentic Intel boards with the original holographic Yottamark.
- Flexible Connectivity: Supports both Direct Attach Copper (DAC) cables for short racks and Optical Transceivers (SR/LR) for longer distances.
- Includes Brackets: Ships with both Low-Profile (for 1U/2U servers) and Full-Height brackets for maximum chassis compatibility.
| Brand | Intel |
| Model Number | X520-DA2 (E10G42BTDA) |
| Controller / Chipset | Intel 82599ES 10 Gigabit Ethernet Controller |
| Ports | Dual Port (2x SFP+ Cages) |
| Interface | PCI Express 2.0 x8 (Compatible with PCIe 3.0/4.0 slots) |
| Cabling Support | Twinaxial DAC (up to 10m) or LC Fiber Optic (SR/LR) |
| Virtualization Tech | VMDq, SR-IOV, Intel VT-c |
| Warranty | 1-Year ServerDukan Replacement Warranty |
Compatibility & Supported Systems
The Intel X520-DA2 uses a standard PCIe interface and is widely supported by almost every Operating System and Server Manufacturer.
Server Hardware Support:
- Dell PowerEdge: Fully compatible with R620, R720, R720xd, R630, R730, T620, T630. (Also known as Dell Part Numbers: XYT17, 942V6).
- HP ProLiant: Works with DL380p Gen8, DL360p Gen8, DL360 Gen9, DL380 Gen9, ML350 Gen9.
- Whitebox / Custom Builds: Compatible with Supermicro, ASRock Rack, and Gigabyte server motherboards.
Operating System & Software Support:
- Virtualization: Native driver support in VMware ESXi (6.5, 6.7, 7.0), Microsoft Hyper-V, and Proxmox VE.
- Software Routing (SD-WAN): The #1 choice for pfSense, OPNsense, and VyOS builds due to excellent FreeBSD driver support.
- Storage OS: Fully supported by TrueNAS Core, TrueNAS Scale, and Unraid.
Ideal Workloads
- Server Virtualization: Use Single Root I/O Virtualization (SR-IOV) to assign dedicated network resources to your Virtual Machines, reducing CPU overhead.
- High-Speed NAS: saturate the throughput of your SSD arrays or ZFS pools by moving from 1Gbps (100MB/s) to 10Gbps (1000MB/s+) transfer speeds.
- iSCSI SAN: Perfect for connecting your server to iSCSI storage targets for block-level storage access.
Required Accessories
This card has empty SFP+ cages. You will need one of the following to connect it:
- 10G SFP+ DAC Cables: The most cost-effective way to connect this card to a switch within the same rack (1m to 3m).
- 10G SR Optical Modules: For longer distances (up to 300m), pair this card with generic or Intel-coded 10G SR Multi-Mode optics.
- OM3/OM4 Fiber Patch Cords: Required if you are using Optical Modules.
The ServerDukan Guarantee:
Don't risk your network uptime with untested hardware. Every Intel X520-DA2 from ServerDukan is cleaned, bracket-fitted, and tested for traffic flow. We back this product with a 1-Year India-Wide Replacement Warranty and secure shipping to ensure it arrives ready to perform.

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Tested & Certified
25-Point Stress Test
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Instant Shipping
Dispatched within 24hrs.
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GST Invoice
B2B Billing Available