--- product_id: 381914347 title: "NICGIGA 2.5G PCIe Network Card, RTL8125B 2.5Gbps PCIe Ethernet Adapter" brand: "nicgiga" price: "$37.99" currency: USD in_stock: true reviews_count: 13 category: "Nicgiga" url: https://www.desertcart.us/products/381914347-nicgiga-2-5g-pcie-network-card-rtl8125b-2-5gbps-pcie store_origin: US region: United States of America --- # 2.5Gbps blazing speed Advanced heat sink cooling PCIe x1/x4/x8/x16 slot compatible NICGIGA 2.5G PCIe Network Card, RTL8125B 2.5Gbps PCIe Ethernet Adapter **Brand:** nicgiga **Price:** $37.99 **Availability:** ✅ In Stock ## Summary > ⚡ Upgrade Your Network, Upgrade Your Game ## Quick Answers - **What is this?** NICGIGA 2.5G PCIe Network Card, RTL8125B 2.5Gbps PCIe Ethernet Adapter by nicgiga - **How much does it cost?** $37.99 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/381914347-nicgiga-2-5g-pcie-network-card-rtl8125b-2-5gbps-pcie) ## Best For - nicgiga enthusiasts ## Why This Product - Trusted nicgiga brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Blazing 2.5Gbps Speed:** Experience lightning-fast data transfers that crush 1Gbps bottlenecks for gaming, streaming, and heavy workloads. - • **Stay Cool Under Pressure:** Built-in heat sink ensures stable, lag-free connections even during marathon gaming or streaming sessions. - • **Sleek Dual-Bracket Design:** Includes standard and low-profile brackets for versatile installation in desktops, servers, and mini towers. - • **Plug & Play on Windows 10+:** No driver hassle on Windows 10/11—just install and dominate your network with ease. - • **Universal PCIe Compatibility:** Fits seamlessly into any PCIe slot (x1 to x16), transforming your desktop into a multi-gig powerhouse. ## Overview The NICGIGA 2.5G Base-T PCIe Network Adapter leverages the Realtek RTL8125B chipset to deliver up to 2.5Gbps Ethernet speeds, tripling standard gigabit performance. Compatible with PCIe slots x1 through x16, it supports Windows, Linux, and Mac OS with minimal driver setup. Designed for gamers and professionals demanding stable, high-bandwidth connections, it features a dual-bracket design and heat sink for versatile installation and reliable cooling. This adapter is a cost-effective upgrade for anyone looking to future-proof their wired network with multi-gigabit speed. ## Description Buy NICGIGA 2.5G PCIe Network Card, RTL8125B 2.5Gbps PCIe Ethernet Adapter | Convert to RJ45 LAN Port, 2.5G/1G/100M Multi-Gigabit Network Adapter for Gaming PC & Desktop, Supports Windows & Linux: Network Cards - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Solid Budget 10GbE NIC (AQC113) – Works Great with Full Line-Speed - ⭐️ Solid Budget 10GbE NIC (AQC113) – Works Great with Full Line-Speed I picked up this NICGIGA 10G Base-T PCIe card (Marvell AQC113 controller) for a 10Gb direct link setup, and overall it’s been a great value. ## 👍 What works well * **Full 10Gb performance** I’m consistently hitting ~9.8–9.9 Gbps with `iperf3`, which is basically line rate for 10Gb. * **Stable connection** Once configured, it’s rock solid. No drops, no renegotiation issues. * **Multi-gig support** Handles 2.5 / 5 / 10 Gb speeds properly with auto-negotiation. * **Standard drivers (Windows/Linux)** Works out of the box on Windows 10/11 and modern Linux kernels (AQC113 support is built in). * **Great for direct attach** I’m using it NIC-to-NIC (no switch), and latency is extremely low (~0.2 ms). --- ## ⚠️ Things to know * **Runs warm** Like most 10Gb cards, it gets hot. Make sure you have airflow. * **Driver quirks on niche systems** Works great on standard PCs, but on locked-down systems (like Synology DSM) you may need manual driver binding. * **Cable quality matters** For 10Gb, use good Cat6a or better. Lower-quality cables can limit speed. --- ## 💡 My setup * Direct 10Gb link between PC and NAS * MTU 9000 (jumbo frames enabled) * Dedicated subnet (no gateway) Result: * ~9.9 Gbps throughput * ~0.2 ms latency --- ## 🚀 Performance note If you’re not seeing full speed, it’s usually not the NIC—it’s: * disk speed (HDD RAID will bottleneck) * SMB/file copy limitations * CPU or driver settings The NIC itself is capable of full throughput. --- ## 👍 Final verdict **Pros** * Excellent performance for the price * Reliable once set up * Works well on modern systems **Cons** * Needs decent cooling * Not truly plug-and-play on every platform --- ## 🧾 Bottom line If you want an affordable 10GbE upgrade and are comfortable with basic setup/tuning, this card delivers full performance and is a great buy. For plug-and-play enterprise environments, you might look at Intel/Mellanox—but for most setups, this does the job perfectly. Review: Solid 10G card for Unraid + x1 riser (funny name though) - Works great in Unraid on a PCIe x1 riser. Installed this NICGIGA (yes, the name is… something) AQC113 10G card in my Unraid box using a short PCIe 1x riser cable. Detected immediately, atlantic driver loaded with zero extra packages or fiddling. Had to reconfigure networking since it came up as eth1 and mess with the onboard 2.5G, but once set up it’s been solid. Getting consistent 5–6.4 Gbps over the x1 riser (exactly what you’d expect from PCIe 3.0 x1 bandwidth). No heat issues, easy install, good driver compatibility, and feels decently built. Funny name aside, it does the job well for a multi-gig upgrade when you’re stuck with an x1 slot. ## Features - [Super-fast 2.5Gbps Networking] High up to 2.5x-speed with Realtek RTL8125B chip, much faster data-transfer speeds for gaming, living broadcasts and downloads in bandwidth-demanding tasks. - [Complete Compatibility] Seamless backward compatibility for 2.5Gbps/1Gbps/100Mbps, Support Windows11/10/8.1/8/7, MAC OS and Linux, no dirver needed on Windows10, easily download the driver in Realtek official website for other OS. - [PCIe to 2.5G RJ45] This 2.5GBASE-T PCIe Network Adater convers a PCIe slot(X1/X4/X8/16) into a 2.5G RJ45 Ethernet Port. Note: Only work with PCIe slot, not for PCI slot. - [Widely Use with Heat Sink]Comes with standard bracket and low-profile-bracket to meet the needs of different cases such as desktop, workstation, server, mini tower computer and so on. Excellent heat dissipation can reduce the temperature quickly and maintain the stability of network transmission. - [Customer Service]Friendly service for lifetime technical supporte. If you encounter any problems, please contact us, our customer team will slove the problem for you within 24 hours. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09HGRK5XB | | Best Sellers Rank | #18 in Internal Computer Networking Cards | | Brand | NICGIGA | | Color | black | | Compatible Devices | Desktop | | Compatible Operating System Family | Linux, Windows | | Customer Reviews | 4.3 out of 5 stars 932 Reviews | | Data Link Protocol | Ethernet | | Data Transfer Rate | 2500 megabits_per_second | | Hardware Interface | Ethernet, PCI | | Item Dimensions L x W x H | 3.94"L x 2.36"W x 0.79"H | | Item Highlight | Convert to RJ45 LAN Port, 2.5G/1G/100M Multi-Gigabit Network Adapter for Gaming PC & Desktop, Supports Windows & Linux | | Item Weight | 0.09 kg | | Manufacturer | NICGIGA | | Mfr Part Number | NIC-2.5G | | Model Number | NIC-2.5G | | Number of Items | 1 | | Product Dimensions | 3.94"L x 2.36"W x 0.79"H | | UPC | 756166630512 | | Unit Count | 1 Count | | Warranty Description | 1 Year Manufacturer | ## Product Details - **Brand:** NICGIGA - **Color:** black - **Compatible Devices:** Desktop - **Data Link Protocol:** Ethernet - **Data Transfer Rate:** 2500 Megabits Per Second - **Hardware Interface:** Ethernet, PCI - **Item Weight:** 0.09 Kilograms - **Manufacturer:** NICGIGA - **Product Dimensions:** 3.94"L x 2.36"W x 0.79"H - **UPC:** 756166630512 ## Images ![NICGIGA 2.5G PCIe Network Card, RTL8125B 2.5Gbps PCIe Ethernet Adapter - Image 1](https://m.media-amazon.com/images/I/61tebFtcfnL.jpg) ![NICGIGA 2.5G PCIe Network Card, RTL8125B 2.5Gbps PCIe Ethernet Adapter - Image 2](https://m.media-amazon.com/images/I/71Cwh8PRnWL.jpg) ![NICGIGA 2.5G PCIe Network Card, RTL8125B 2.5Gbps PCIe Ethernet Adapter - Image 3](https://m.media-amazon.com/images/I/71gEGQhcGNL.jpg) ![NICGIGA 2.5G PCIe Network Card, RTL8125B 2.5Gbps PCIe Ethernet Adapter - Image 4](https://m.media-amazon.com/images/I/61l64Z6DKWL.jpg) ![NICGIGA 2.5G PCIe Network Card, RTL8125B 2.5Gbps PCIe Ethernet Adapter - Image 5](https://m.media-amazon.com/images/I/71cOGIAkjjL.jpg) ## Available Options This product comes in different **Set** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Solid Budget 10GbE NIC (AQC113) – Works Great with Full Line-Speed *by B***. on May 5, 2026* ⭐️ Solid Budget 10GbE NIC (AQC113) – Works Great with Full Line-Speed I picked up this NICGIGA 10G Base-T PCIe card (Marvell AQC113 controller) for a 10Gb direct link setup, and overall it’s been a great value. ## 👍 What works well * **Full 10Gb performance** I’m consistently hitting ~9.8–9.9 Gbps with `iperf3`, which is basically line rate for 10Gb. * **Stable connection** Once configured, it’s rock solid. No drops, no renegotiation issues. * **Multi-gig support** Handles 2.5 / 5 / 10 Gb speeds properly with auto-negotiation. * **Standard drivers (Windows/Linux)** Works out of the box on Windows 10/11 and modern Linux kernels (AQC113 support is built in). * **Great for direct attach** I’m using it NIC-to-NIC (no switch), and latency is extremely low (~0.2 ms). --- ## ⚠️ Things to know * **Runs warm** Like most 10Gb cards, it gets hot. Make sure you have airflow. * **Driver quirks on niche systems** Works great on standard PCs, but on locked-down systems (like Synology DSM) you may need manual driver binding. * **Cable quality matters** For 10Gb, use good Cat6a or better. Lower-quality cables can limit speed. --- ## 💡 My setup * Direct 10Gb link between PC and NAS * MTU 9000 (jumbo frames enabled) * Dedicated subnet (no gateway) Result: * ~9.9 Gbps throughput * ~0.2 ms latency --- ## 🚀 Performance note If you’re not seeing full speed, it’s usually not the NIC—it’s: * disk speed (HDD RAID will bottleneck) * SMB/file copy limitations * CPU or driver settings The NIC itself is capable of full throughput. --- ## 👍 Final verdict **Pros** * Excellent performance for the price * Reliable once set up * Works well on modern systems **Cons** * Needs decent cooling * Not truly plug-and-play on every platform --- ## 🧾 Bottom line If you want an affordable 10GbE upgrade and are comfortable with basic setup/tuning, this card delivers full performance and is a great buy. For plug-and-play enterprise environments, you might look at Intel/Mellanox—but for most setups, this does the job perfectly. ### ⭐⭐⭐⭐⭐ Solid 10G card for Unraid + x1 riser (funny name though) *by A***S on August 14, 2026* Works great in Unraid on a PCIe x1 riser. Installed this NICGIGA (yes, the name is… something) AQC113 10G card in my Unraid box using a short PCIe 1x riser cable. Detected immediately, atlantic driver loaded with zero extra packages or fiddling. Had to reconfigure networking since it came up as eth1 and mess with the onboard 2.5G, but once set up it’s been solid. Getting consistent 5–6.4 Gbps over the x1 riser (exactly what you’d expect from PCIe 3.0 x1 bandwidth). No heat issues, easy install, good driver compatibility, and feels decently built. Funny name aside, it does the job well for a multi-gig upgrade when you’re stuck with an x1 slot. ### ⭐⭐⭐⭐⭐ Plug and play with speeds as advertised *by S***C on March 17, 2026* I installed this into my AMD motherboard on Windows 11. It was immediately recognized on my machine -- with no drivers needing to be installed -- and easily achieved over 2 Gbps. It has a very small footprint with no heat issues. ## Frequently Bought Together - NICGIGA 2.5G Base-T PCIe Network Adapter, Realtek RTL8125B 2.5Gbps/1Gbps/100Mbps PCI Express Gigabit Network Card Convert to Ethernet RJ45 LAN Port for Gaming/Office, Support Windows/Linux - 5 Port 2.5GB Ethernet Switch Unmanaged Network Switch | 5 x 2.5 Gigabit | 1 x 10G SFP+ | Multigig Switch 10-100-1000Mbps | 45G Bandwidth | Plug & Play | Fanless Metal Internet Switch | NOT Support VPN - UGREEN 2.5Gb USB to Ethernet Adapter - Aluminum, USB 3.0 to RJ45 Dongle for Laptop, Compatible with MacBook, XPS, Windows, macOS --- ## 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.us/products/381914347-nicgiga-2-5g-pcie-network-card-rtl8125b-2-5gbps-pcie](https://www.desertcart.us/products/381914347-nicgiga-2-5g-pcie-network-card-rtl8125b-2-5gbps-pcie) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-10-16*