--- product_id: 686776977 title: "QFly 2.5G Base-T PCIe Network Adapter,RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card,1x RJ45 LAN Port 2.5G Network Card,Compatible with Windows/Linux" brand: "qfly" price: "£2.66" currency: GBP in_stock: false url: https://www.desertcart.co.uk/products/686776977-qfly-2-5g-base-t-pcie-network-adapter-rtl8125b-2500 store_origin: GB region: United Kingdom --- # 2.5 Gbps blazing speed Auto-negotiation multi-speed Wide OS & slot compatibility QFly 2.5G Base-T PCIe Network Adapter,RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card,1x RJ45 LAN Port 2.5G Network Card,Compatible with Windows/Linux **Brand:** qfly **Price:** £2.66 **Availability:** ❌ Out of Stock ## Summary > 🚀 Upgrade your network, upgrade your hustle! ## Quick Answers - **What is this?** QFly 2.5G Base-T PCIe Network Adapter,RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card,1x RJ45 LAN Port 2.5G Network Card,Compatible with Windows/Linux by qfly - **How much does it cost?** £2.66 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/686776977-qfly-2-5g-base-t-pcie-network-adapter-rtl8125b-2500) ## Best For - qfly enthusiasts ## Why This Product - Trusted qfly brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Blazing 2.5G Speed:** Experience 2.5x faster transfers than standard Gigabit Ethernet for seamless HD streaming and lag-free gaming. - • **Flexible Installation:** Includes both standard and low-profile brackets to fit any PC chassis, from full towers to compact builds. - • **Smart Auto-Negotiation:** Effortlessly adapts between 2.5G, 1G, and 100Mbps networks to keep you connected without a hitch. - • **Universal Compatibility:** Works flawlessly with Windows (XP to 11), Linux kernels 4.5-6.12, and all PCIe x1/x4/x8/x16 slots. - • **Reliable Support & Warranty:** Backed by 1-year warranty and 24/7 expert technical support to keep your network running smooth. ## Overview The QFly 2.5G Base-T PCIe Network Adapter leverages the RTL8125B chipset to deliver ultra-fast 2.5 Gbps Ethernet speeds, supporting multi-speed auto-negotiation for seamless compatibility across modern and legacy networks. Designed for professionals demanding high bandwidth, it supports a wide range of Windows and Linux operating systems and fits all PCIe slots with included brackets. Perfect for high-performance streaming, gaming, and large file transfers, it comes with reliable driver support and a 1-year warranty. ## Description 2.5G Base-T PCIe Network Adapter, RTL8125B chipset PCI Express 2.5 Gigabit Ethernet Card, self-negotiation 2500Mbps/1000Mbps/100Mbps multi-speed,1x RJ45 Port, Compatible with Windows/Linux ## Features - 【Featuring 2.5G Base-T technology】: This 2.5G PCIe network card delivers blazing-fast speeds up to 2.5 Gbps, 2.5x the bandwidth of traditional Gigabit Ethernet, to meet high-bandwidth demands like large file transfers, HD live streaming, and lag-free gaming. - 【Multiple Speed Auto-Negotiation】: Seamlessly adapts to multi-speed networks (2.5G/1G/100Mbps) with auto-negotiation technology. The 2.5G Ethernet port intelligently adjusts between high-speed and legacy connections, ensuring effortless compatibility with both modern and older devices. - 【Supported Operating Systems】: Support Windows 11/10/8/8.1/7/XP/Vista, Windows Server 2012/2008 R2/2008/2003, UEFI, Linux kernel 4.5 - 6.12 - 【Great Compatibility】: Compatible with x1, x4, x8, x16 PCIe slots. Standard and low-profile brackets are both provided, suitable for standard and mini PC cases. - 【Free Driver Downloads】: Please visit Realtek's official website to obtain the latest drivers, and download and install them according to your operating system version. - 【Reliable Technical Support】: Provide 1 year warranty service and enjoy 24/7 free advanced technical support. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | QFly | | Manufacturer | QFly | | Model | 2.5G PCIe | | Package Dimensions | 15.19 x 13.41 x 3.71 cm; 107 g | | Item model number | 2.5G PCIe | | Operating System | Windows, Linux | | Hardware Interface | PCI Express x1 | | Compatible Devices | Personal Computer | | Mounting Hardware | standard bracket, low-profile bracket, screwdriver, screws | | Number of items | 1 | | Batteries Included | No | | Batteries Required | No | | Data Transfer Rate | 2500 Megabytes Per Second | | Data Link Protocol | Ethernet, Gigabit Ethernet | | Manufacturer | QFly | | Item Weight | 107 g | ## Product Details - **Brand:** QFly - **Hardware Interface:** PCI Express x1 - **Style:** Modern - **Item Weight:** 107 Grams - **Compatible Devices:** Personal Computer ## Images ![QFly 2.5G Base-T PCIe Network Adapter,RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card,1x RJ45 LAN Port 2.5G Network Card,Compatible with Windows/Linux - Image 1](https://m.media-amazon.com/images/I/71E5UDxCNTL.jpg) ![QFly 2.5G Base-T PCIe Network Adapter,RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card,1x RJ45 LAN Port 2.5G Network Card,Compatible with Windows/Linux - Image 2](https://m.media-amazon.com/images/I/71AjLuTIf-L.jpg) ![QFly 2.5G Base-T PCIe Network Adapter,RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card,1x RJ45 LAN Port 2.5G Network Card,Compatible with Windows/Linux - Image 3](https://m.media-amazon.com/images/I/714LFgqJZLL.jpg) ![QFly 2.5G Base-T PCIe Network Adapter,RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card,1x RJ45 LAN Port 2.5G Network Card,Compatible with Windows/Linux - Image 4](https://m.media-amazon.com/images/I/71ytWWBp9dL.jpg) ![QFly 2.5G Base-T PCIe Network Adapter,RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card,1x RJ45 LAN Port 2.5G Network Card,Compatible with Windows/Linux - Image 5](https://m.media-amazon.com/images/I/71xOeojJs4L.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/686776977-qfly-2-5g-base-t-pcie-network-adapter-rtl8125b-2500](https://www.desertcart.co.uk/products/686776977-qfly-2-5g-base-t-pcie-network-adapter-rtl8125b-2500) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-24*