--- product_id: 551901057 title: "RTL8125-2.5G-4T-X4" brand: "10gtek" price: "Β£68.73" currency: GBP in_stock: true reviews_count: 10 category: "10 Gtek" url: https://www.desertcart.co.uk/products/551901057-rtl8125-2-5g-4t-x4 store_origin: GB region: United Kingdom --- # 2.5Gbps ultra-fast transfer Quad RJ-45 ports for multi-device connectivity PCIe 2.1 x4 lane for seamless integration RTL8125-2.5G-4T-X4 **Brand:** 10gtek **Price:** Β£68.73 **Availability:** βœ… In Stock ## Summary > πŸš€ Quad-port speed meets pro-level power β€” don’t get left buffering! ## Quick Answers - **What is this?** RTL8125-2.5G-4T-X4 by 10gtek - **How much does it cost?** Β£68.73 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/551901057-rtl8125-2-5g-4t-x4) ## Best For - 10gtek enthusiasts ## Why This Product - Trusted 10gtek brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Quad-Port Powerhouse:** Connect up to four devices simultaneously without compromising on performance. - β€’ **Blazing 2.5Gbps Speeds:** Experience lightning-fast data transfer that keeps your network ahead of the curve. - β€’ **Compact PCIe x4 Design:** Fits perfectly in mini slots, ideal for sleek desktops and compact servers. - β€’ **Plug & Play Versatility:** Seamlessly compatible with Windows, Linux, VMware, and more for effortless deployment. - β€’ **Optimized for Pro Setups:** Supports Jumbo Frames, WOL, DPDK, iSCSI, and FCoE to maximize your network efficiency. ## Overview The 100M/1000M/2.5G NIC Network Card by 10Gtek features a Realtek RTL8125BG controller with quad RJ-45 ports, delivering up to 2.5Gbps data transfer via PCIe 2.1 x4 interface. Compatible across major OS platforms including Windows, Linux, and VMware, it supports advanced networking protocols like Jumbo Frames and iSCSI, making it a versatile, high-performance solution for professional and server environments. ## Description Product description Review: good product, worked out the box, recommended! - works out the box. no problems. gave nas transfer speeds of ~280Mb/s on private network. nice that it uses PCIE-X4 so it can fit in the mini slots on the motherboard. happy with the purchase! Review: Love these, working as intended. - Used these as an extra NIC on my proxmox cluster that is comprised of Lenovo mini PC's, they work great at the speeds they are rated for. Fit inside of a vga sized cutout that was unpopulated, so they were plug and play, no case mods needed. ## Features - Controller(s)：Realtek RTL8125BG + ASMedia ASM1812. - Quad RJ-45 Ports.(Note: Four ports working at the same time, the rate can not be full.) - PCIe2.1, x4 Lane. - Support Jumbo FramesWOL, DPDK, iSCSI, FCoE. Not-support PXE, VLAN. - Compatible with Windows 7/8/10/11, Windows Server 2008 R2/2012/2016/2019, Linux 2.6.x to 5.x, Centos 6/7/8, Ubuntu 16/18/19/20, VMware ESXi 6. NOT SUPPORT ESXI 7/8, FREEBSD and HOT SWAPING. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BQ32FVKR | | Best Sellers Rank | #57 in Internal Computer Networking Cards | | Brand | 10Gtek | | Color | PCIe-X4 | | Compatible Devices | Server, Desktop | | Customer Reviews | 4.2 out of 5 stars 96 Reviews | | Data Link Protocol | Ethernet | | Data Transfer Rate | 2.5 Gigabytes Per Second | | Hardware Interface | PCIE x 4 | | Item Weight | 0.17 Kilograms | | Manufacturer | 10Gtek | | Mfr Part Number | RTL8125-2.5G-4T-X4-US | | Model Number | RTL8125-2.5G-4T-X4-US | ## Product Details - **Brand:** 10Gtek - **Color:** PCIe-X4 - **Compatible Devices:** Server, Desktop - **Data Link Protocol:** Ethernet - **Data Transfer Rate:** 2.5 Gigabytes Per Second - **Hardware Interface:** PCIE x 4 - **Item Weight:** 0.17 Kilograms - **Manufacturer:** 10Gtek ## Images ![RTL8125-2.5G-4T-X4 - Image 1](https://m.media-amazon.com/images/I/61jSmjyYwVL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ good product, worked out the box, recommended! *by P***M on April 29, 2026* works out the box. no problems. gave nas transfer speeds of ~280Mb/s on private network. nice that it uses PCIE-X4 so it can fit in the mini slots on the motherboard. happy with the purchase! ### ⭐⭐⭐⭐⭐ Love these, working as intended. *by K***Y on February 15, 2026* Used these as an extra NIC on my proxmox cluster that is comprised of Lenovo mini PC's, they work great at the speeds they are rated for. Fit inside of a vga sized cutout that was unpopulated, so they were plug and play, no case mods needed. ### ⭐⭐⭐⭐ Works in Lenovo M700 Tiny with Unraid 7.1.4 *by S***Y on August 26, 2025* Very niche product that works for my very specific use case. I wanted to upgrade my Lenovo M700 Tiny with some higher speed networking as it has a DAS attached storage and Unraid on it. I was able to install it in the wireless card class that was close to the power button. The very tight fit, but was able to fold the cable under the card and route it to the back. I was able to pull the PCI brackets off the Ethernet port and use the screws and holes to attach it to an unused serial slot punch out. I used a piece of electrical tape to cover the bottom of the Ethernet port PCB to keep from shorts. It looks factory! Unraid 7.1.4 picked it up without any issue and able to see 2500 Mbps connection. (Router confirms as well) Initial speed tests seem to confirm it. Hopeful that the RTL8125 will be reliable as the Intel I219-V has been. Three complaints. First is on Amazon, the packed was crushed. Luckily it was packed in a strong plastic case. Second, the cable is very short. Even in my tiny client PC, it took some creative routing. I would appreciate a bit more length on the cable. Third, please include a screw for the M.2 please. I can understand a commodity SSD not including a screw, but this is a bit more niche. Even a cheap screw driver was included. Overall, a great way to add higher speed networking to a mini PC. Unraid worked out of the box. ## Frequently Bought Together - 100M/1000M/2.5G NIC Network Card, Quad RJ-45 Port, with Realtek RTL8125BG Controller, Support Windows/Windows Server/Linux/Ubuntu/Centos/Vmware - 10Gtek 10Gb Dual RJ45 Port Network Card with X540 Controller, PCIe Ethernet LAN Adapter for Windows/Linux/ESX Servers, Compare to Intel X540-T2 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/551901057-rtl8125-2-5g-4t-x4](https://www.desertcart.co.uk/products/551901057-rtl8125-2-5g-4t-x4) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-07-05*