--- product_id: 287314742 title: "2.5GBase-T PCIe Network Adapter RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card RJ45 LAN Controller Support PXE for Windows/Linux/MAC with Low Profile" brand: "ulansen" price: "€ 36.55" currency: EUR in_stock: true reviews_count: 13 category: "Ulan Se N" url: https://www.desertcart.it/products/287314742-2-5gbase-t-pcie-network-adapter-rtl8125b-2500-1000-100mbps store_origin: IT region: Italy --- # 2.5Gbps blazing speed Low profile, cool & compact design PCIe x1/x4/x8/x16 versatile slot support 2.5GBase-T PCIe Network Adapter RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card RJ45 LAN Controller Support PXE for Windows/Linux/MAC with Low Profile **Brand:** ulansen **Price:** € 36.55 **Availability:** ✅ In Stock ## Summary > 🚀 Upgrade your network, upgrade your hustle. ## Quick Answers - **What is this?** 2.5GBase-T PCIe Network Adapter RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card RJ45 LAN Controller Support PXE for Windows/Linux/MAC with Low Profile by ulansen - **How much does it cost?** € 36.55 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/287314742-2-5gbase-t-pcie-network-adapter-rtl8125b-2500-1000-100mbps) ## Best For - ulansen enthusiasts ## Why This Product - Trusted ulansen brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek Low Profile Design:** Compact form factor with included low-profile bracket fits small form factor PCs without compromising performance or cooling. - • **Blazing 2.5 Gigabit Speed:** Experience lightning-fast data transfers and ultra-smooth 4K streaming with 2.5GBase-T throughput—double the standard gigabit speed. - • **Cross-Platform Powerhouse:** Plug & play support for Windows, macOS, Linux, and legacy systems ensures your network stays future-proof and flexible. - • **Advanced Remote Management:** Wake-on-LAN and PXE boot support empower IT pros with remote control and network boot capabilities. - • **Universal PCIe Compatibility:** Fits seamlessly into any PCIe slot (x1, x4, x8, x16), making upgrades effortless across desktops and servers. ## Overview The 2.5GBase-T PCIe Network Adapter RTL8125B delivers a powerful 2.5Gbps Ethernet connection compatible with multiple PCIe slots and operating systems. Featuring advanced remote management tools like Wake-on-LAN and PXE, plus a low-profile design for compact builds, it’s the perfect professional-grade upgrade for millennial managers seeking faster, reliable, and versatile networking solutions. ## Description Product description Suitable for Host Sever and Personal PC PCI Express RTL8125B 2.5G network adapter is combines a four-speed IEEE802.3 compatible Media Access controller with a four-speed Ethernet transceiver, it is complies with the IEEE802.3u specification for 10/100Mbps Ethernet,the IEEE802.3ab specification for 1000Mbps Ethernet and IEEE802.3bz specification for 2500Mbps Ethernet. Product Feature. It offers high-speed transmission over CAT5e UTP cable OR CAT3 UTP(10Mbps only)cable .it is suitable for multiple market segments and emerging applications, such as desktop, workstation, server, communications platforms, and embedded applications. Specification Chipset：RTL8125B Port number：1* RJ45 Standard：IEEE 802.3、IEEE 802.3u、IEEE 802.3ab、IEEE 802.3az、IEEE 802.3bz Network media：10Base-T,cat3 or above UTP,1000Base-Tx,cat5 or above UTP Data rate：PCI Express 1x slot Auto MDIX：YES Full Duplex Support：YES LED Indicator：100M/1G/2.5G Link/Act Dimension：71.5*50*1.6mm Support OS：Windows 10(32/64), Win7 (32/64), Win8,8.1 (32/64)，Windows Server,2012,2008，Linux，Mac OS Support PXE function. Support Wake on LAN Support 2.5G and 1G Lite mode Compatible with NBASE-T Alliance PHY Specification Supports PCI Express 2.1 Supports 1-Lane 2.5G/5Gbps PCI Express Bus Compliant with IEEE 802.3,IEEE 802.3u,IEEE 802.3ab Supports IEEE 802.1P Layer 2 Priority Encoding Supports IEEE 802.1Q VLAN tagging Supports IEEE802.3az(Energy Efficient Ethernet) Supports IEEE802.3bz(2.5GBASE-T) Supports Full Duplex flow control(IEEE 802 .3x) Packing list 1xPCIE 2.5G LAN Card 1x Low profile Bracket Review: A Speedy Upgrade for My Network Setup! - I recently purchased the 2.5GBase-T PCIe Network Adapter with RTL8125B chipset, and it has been a game-changer for my home network. This little powerhouse of a network card has made a significant difference in my data transfer speeds and overall network performance. Installation was a breeze, as the card fits perfectly into a PCIe slot on my motherboard. The drivers were easy to find and install, and I was up and running in no time. I was pleasantly surprised by the compatibility and stability of this card with my system. The most impressive aspect of this network adapter is, of course, its speed. The 2.5 Gigabit per second throughput is a substantial upgrade from my previous 1Gbps network card. I've noticed a significant improvement in file transfer speeds, online gaming, and 4K video streaming. Whether I'm transferring large files or enjoying lag-free online gameplay, this card has consistently delivered. The RTL8125B chipset seems to be doing a fantastic job in managing network traffic. I haven't experienced any connectivity issues, and it's been rock-solid since I installed it. It also supports various advanced features like Wake-on-LAN, which is a handy addition for remote management. Additionally, this network card remains cool and doesn't heat up excessively, even under heavy usage. It also features an efficient power management system, which is great for energy-conscious users. In conclusion, the 2.5GBase-T PCIe Network Adapter with the RTL8125B chipset is an excellent addition to any PC or server setup. If you're looking for a cost-effective way to upgrade your network speeds and improve overall network performance, this card is a solid choice. I couldn't be happier with my purchase, and I highly recommend it to anyone looking to make the leap to faster networking speeds without breaking the bank. Kudos to the makers of this fantastic product! Review: Works great. - Easy to install, worked with windows without installing drivers. Fast speed. ## Features - Compatible for X1,X4,X8,X16，Comes with low profilce bracket - Support PXE function an Wake on LAN - Support DSM,PVE,ikuai,unraid6.9.2, OpenWrt ESXI6.7 (Doesn’t support ESXI 7.0) - Freely compatible, the network card can support multiple system: Windows ME/98SE/2000/XP, Win7 / Win8 / Win10 / Vista / Sever 2003/2008 / 2012 /2016/ Linux / DOS/MAC OS ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08V1HG47H | | Best Sellers Rank | #85 in Internal Computer Networking Cards | | Brand | ULANSeN | | Compatible Devices | Laptop | | Customer Reviews | 4.5 out of 5 stars 1,586 Reviews | | Hardware Interface | Ethernet | | Item Dimensions L x W x H | 2.8"L x 1.97"W x 0.08"H | | Manufacturer | ULANSON | | Mfr Part Number | RTL8125B | | Model Number | RTL8125B | | Operating System | ['Windows', 'macOS', 'Linux'] | | Product Dimensions | 2.8"L x 1.97"W x 0.08"H | | Style | Classic | | Style Name | Classic | ## Product Details - **Brand:** ULANSeN - **Compatible Devices:** Laptop - **Hardware Interface:** Ethernet - **Product Dimensions:** 2.8"L x 1.97"W x 0.08"H - **Style:** Classic ## Images ![2.5GBase-T PCIe Network Adapter RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card RJ45 LAN Controller Support PXE for Windows/Linux/MAC with Low Profile - Image 1](https://m.media-amazon.com/images/I/61jNjSNSj3L.jpg) ![2.5GBase-T PCIe Network Adapter RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card RJ45 LAN Controller Support PXE for Windows/Linux/MAC with Low Profile - Image 2](https://m.media-amazon.com/images/I/61pjFqNuvhL.jpg) ![2.5GBase-T PCIe Network Adapter RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card RJ45 LAN Controller Support PXE for Windows/Linux/MAC with Low Profile - Image 3](https://m.media-amazon.com/images/I/61VLgIRJoUL.jpg) ![2.5GBase-T PCIe Network Adapter RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card RJ45 LAN Controller Support PXE for Windows/Linux/MAC with Low Profile - Image 4](https://m.media-amazon.com/images/I/516JzO1pfEL.jpg) ![2.5GBase-T PCIe Network Adapter RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card RJ45 LAN Controller Support PXE for Windows/Linux/MAC with Low Profile - Image 5](https://m.media-amazon.com/images/I/51JX83Z4DNL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ A Speedy Upgrade for My Network Setup! *by J***A on October 18, 2023* I recently purchased the 2.5GBase-T PCIe Network Adapter with RTL8125B chipset, and it has been a game-changer for my home network. This little powerhouse of a network card has made a significant difference in my data transfer speeds and overall network performance. Installation was a breeze, as the card fits perfectly into a PCIe slot on my motherboard. The drivers were easy to find and install, and I was up and running in no time. I was pleasantly surprised by the compatibility and stability of this card with my system. The most impressive aspect of this network adapter is, of course, its speed. The 2.5 Gigabit per second throughput is a substantial upgrade from my previous 1Gbps network card. I've noticed a significant improvement in file transfer speeds, online gaming, and 4K video streaming. Whether I'm transferring large files or enjoying lag-free online gameplay, this card has consistently delivered. The RTL8125B chipset seems to be doing a fantastic job in managing network traffic. I haven't experienced any connectivity issues, and it's been rock-solid since I installed it. It also supports various advanced features like Wake-on-LAN, which is a handy addition for remote management. Additionally, this network card remains cool and doesn't heat up excessively, even under heavy usage. It also features an efficient power management system, which is great for energy-conscious users. In conclusion, the 2.5GBase-T PCIe Network Adapter with the RTL8125B chipset is an excellent addition to any PC or server setup. If you're looking for a cost-effective way to upgrade your network speeds and improve overall network performance, this card is a solid choice. I couldn't be happier with my purchase, and I highly recommend it to anyone looking to make the leap to faster networking speeds without breaking the bank. Kudos to the makers of this fantastic product! ### ⭐⭐⭐⭐⭐ Works great. *by S***R on November 20, 2025* Easy to install, worked with windows without installing drivers. Fast speed. ### ⭐⭐⭐⭐⭐ Seamless Installation and Perfect Performance! *by R***S on February 9, 2025* I couldn't be happier with this network adapter! It was incredibly easy to install—literally plug and play. I didn't have to deal with complicated drivers or troubleshooting, which made the whole process a breeze. Once installed, it worked perfectly. My internet connection has been fast and stable, with no drops or interruptions. Whether I'm streaming, gaming, or just browsing, it performs flawlessly. For the price, this adapter is a steal, and it’s been a great upgrade for my setup. Highly recommend it for anyone looking for a hassle-free, reliable network adapter! ## Frequently Bought Together - 2.5GBase-T PCIe Network Adapter RTL8125B 2500/1000/100Mbps PCI Express Gigabit Ethernet Card RJ45 LAN Controller Support PXE for Windows/Linux/MAC with Low Profile - UGREEN USB to Ethernet Adapter 2.5Gb, Ethernet to USB Adapter, Aluminum, USB 3.0 to RJ45 Computer Network Internet LAN Ethernet Dongle for Laptop, Compatible for MacBook Air/Pro, XPS, Windows, macOS - Cat 8 Ethernet Cable, 1.5Ft 3Ft 6Ft 10Ft 15Ft 20Ft 30Ft 40Ft 50Ft 60Ft 100Ft Heavy Duty High Speed Internet Network Cable, Professional LAN Cable Shielded in Wall, Indoor&Outdoor --- ## 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.it/products/287314742-2-5gbase-t-pcie-network-adapter-rtl8125b-2500-1000-100mbps](https://www.desertcart.it/products/287314742-2-5gbase-t-pcie-network-adapter-rtl8125b-2500-1000-100mbps) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-13*