--- product_id: 299854346 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: "B/.103" currency: PAB in_stock: true reviews_count: 13 category: "Ulansen" url: https://www.desertcart.com.pa/products/299854346-2-5gbase-t-pcie-network-adapter-rtl8125b-2500-1000-100mbps store_origin: PA region: Panama --- # 2.5Gbps ultra-fast LAN speed PCIe 1x slot compatibility Broad OS & PXE/WOL 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:** B/.103 **Availability:** ✅ In Stock ## Summary > 🚀 Upgrade your LAN game with 2.5G speed—because buffering is so last decade! ## 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?** B/.103 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/299854346-2-5gbase-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 - • **Blazing 2.5G Speed:** Experience lightning-fast data transfer up to 2.5Gbps over standard CAT5e cables—future-proof your network now. - • **Advanced Network Features:** Supports PXE boot, Wake on LAN, VLAN tagging, and energy-efficient Ethernet standards for professional-grade control. - • **Seamless PCIe Integration:** Fits effortlessly into any PCI Express x1, x4, x8, or x16 slot for versatile desktop and server upgrades. - • **Universal OS Compatibility:** Plug & play support across Windows, Linux, and macOS ensures zero hassle and instant connectivity. - • **Low Profile, High Performance:** Compact design with included low-profile bracket fits sleek builds without compromising speed or reliability. ## Overview The ULANSEN RTL8125B PCIe Network Adapter delivers blazing 2.5Gbps Ethernet connectivity via a single RJ45 port, compatible with PCI Express x1/x4/x8/x16 slots. Supporting a wide range of operating systems including Windows, Linux, and macOS, it features advanced networking protocols like PXE boot and Wake on LAN. Its low-profile design and plug-and-play ease make it the perfect upgrade for professionals seeking reliable, high-speed wired networking. ## 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: Good performance - Having got new broadband I was gutted to be restricted by my network card. This little number soon arrived from desertcart, was plug & play therefore i did not need additional drivers, Windows done all the work for me. I was soon at full speed with this great, value for money, NIC Review: It's good - Great. I've been using this on my desktop PC, and it's been flawless: it sends and receives data like a champ. ## Features - Compatible for X1,X4,X8,X16 - Comes with low profilce bracket - Support PXE function and 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 | 15,011 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 28 in Network Cards | | Brand | ULANSEN | | Brand Name | ULANSEN | | Compatible Devices | Laptop | | Compatible devices | Laptop | | Country of Origin | China | | Customer Reviews | 4.6 out of 5 stars 1,575 Reviews | | Hardware Interface | Ethernet | | Hardware interface | Ethernet | | Item Dimensions L x W x H | 7.1L x 5W x 0.2H centimetres | | Manufacturer | ULANSON | | Manufacturer Part Number | RTL8125B | | Model Number | RTL8125B | | Number of Items | 1 | | Number of items | 1 | | Operating System | ['Windows', 'macOS', 'Linux'] | | Product dimensions | 7.1L x 5W x 0.2H centimetres | | Style | Classic | | Style Name | Classic | ## Product Details - **Brand:** ULANSEN - **Compatible devices:** Laptop - **Hardware interface:** Ethernet - **Product dimensions:** 7.1L x 5W x 0.2H centimetres - **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 ### ⭐⭐⭐⭐⭐ Good performance *by R***S on 18 February 2026* Having got new broadband I was gutted to be restricted by my network card. This little number soon arrived from Amazon, was plug & play therefore i did not need additional drivers, Windows done all the work for me. I was soon at full speed with this great, value for money, NIC ### ⭐⭐⭐⭐⭐ It's good *by L***X on 10 October 2025* Great. I've been using this on my desktop PC, and it's been flawless: it sends and receives data like a champ. ### ⭐⭐⭐⭐⭐ Very quick connection. *by D***J on 13 April 2026* Very quick connection speed as described in the advert. Very pleased and would recommend it to anybody who wants a speedy connection. Easy to install. ## 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.com.pa/products/299854346-2-5gbase-t-pcie-network-adapter-rtl8125b-2500-1000-100mbps](https://www.desertcart.com.pa/products/299854346-2-5gbase-t-pcie-network-adapter-rtl8125b-2500-1000-100mbps) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-08-14*