# 10Gb Network Card Single SFP+ Port PCIE Ethernet Server for Intel X520-DA1 82599EN Chip Support Windows 7

> Lemspum 10GbE NIC with Intel X520 82599EN chip, single SFP+ port, PCIe V2.0 x8/x16, broad OS support incl

Tags: network_card, 10gbe, intel-x520, sfp+, pcie, lemspum
Source: https://www.amazon.co.jp/dp/B0BF9STWVT
Article page: https://web-autoai.com/articles/10gb-network-card-single-sfp-port-pcie-ethernet-server-for?lang=en

Prices and ratings change over time — check the article page for the current values.

---

## Overview
It supports data rates of 10/100/1000/10000Mbps through one SFP+ port, giving you a straightforward path to 10-gigabit networking without the cost of a multi-port enterprise card.
This card is designed for both desktop and server environments, using a PCI Express V2.0 x8/x16 interface. It works with SFP+ Direct Attach Cables, SFP+ modules, and SFP+ AOC, so you can match the physical connection to your existing switching gear. For users looking to move beyond gigabit Ethernet on a budget, this is a practical entry point.

## Connectivity & Compatibility
The card uses a PCI Express V2.0 x8/x16 lane interface, so it physically requires an x8 or x16 slot. It will not fit into x1 or x4 slots. The single SFP+ port means you need to supply your own SFP+ module, DAC cable, or AOC, which is a common consideration when purchasing 10GbE adapters.
For Windows 11, Intel's Release_28.0. zip driver pack is recommended to get the card recognized.
Both low-profile and standard brackets are included, so the card can be installed in slim desktops as well as full-tower cases.

## Product Info
This NIC is positioned at the entry level of the 10GbE adapter market. It uses the Intel X520 82599EN controller, which is an established chip design commonly found in refurbished or third-party server NICs. The exact release date is not clearly documented, but the product has been available through online retail channels for several years.
The package includes the NIC itself, a low-profile bracket, and a standard bracket. The seller offers a 30-day return or refund window and a 3-year warranty for quality issues, along with lifetime technical support.

## Best Use Cases
Home lab and small office users with a 10GbE switch or NAS will benefit the most from this card. If you're constantly moving large files between workstations and shared storage, upgrading from 1GbE to 10GbE eliminates a major bottleneck and makes backups and project transfers noticeably faster.
Creative professionals handling video editing or 3D rendering with multiple PCs accessing a central NAS will also see real gains. The higher throughput shortens render times and reduces waiting when pulling assets from a shared drive.
If you don't have 10GbE networking gear around the card, however, this investment won't deliver speed improvements, so check your infrastructure first.

### Product Disclosure (Amazon)
- Manufacturer: Splensun
- Brand: Lemspum
- Seller: Amazon US
- Fulfilled by: Amazon US
- ASIN: B0BF9STWVT
- Note: This article covers a manufacturer-made product based on Amazon listing details.