--- product_id: 90938552 title: "Mellanox ConnectX-4 Lx EN Network Adapter (MCX4121A-XCAT)" brand: "mellanox" price: "VT65979" currency: VUV in_stock: true reviews_count: 2 category: "Mellanox" url: https://www.desertcart.vu/products/90938552-mellanox-connectx-4-lx-en-network-adapter-mcx4121a-xcat store_origin: VU region: Vanuatu --- # Low latency Multi-host tech High throughput Mellanox ConnectX-4 Lx EN Network Adapter (MCX4121A-XCAT) **Brand:** mellanox **Price:** VT65979 **Availability:** ✅ In Stock ## Summary > 🚀 Elevate Your Network Game! ## Quick Answers - **What is this?** Mellanox ConnectX-4 Lx EN Network Adapter (MCX4121A-XCAT) by mellanox - **How much does it cost?** VT65979 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/90938552-mellanox-connectx-4-lx-en-network-adapter-mcx4121a-xcat) ## Best For - mellanox enthusiasts ## Why This Product - Trusted mellanox brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Maximize Your ROI:** Leverage multi-host technology to enhance your data center's return on investment. - • **Virtualization Ready:** Cutting-edge performance in virtualized overlay networks for optimal efficiency. - • **Lightweight Powerhouse:** Weighing just 5.5 ounces, this adapter packs a punch without the bulk. - • **Unleash Unmatched Speed:** Experience industry-leading throughput and low latency for seamless web access and storage performance. - • **Versatile Compatibility:** Smart interconnect for x86, Power, ARM, and GPU-based platforms ensures flexibility. ## Overview The Mellanox ConnectX-4 Lx EN Network Adapter (MCX4121A-XCAT) is designed for high-performance computing environments, offering exceptional throughput and low latency. Its multi-host technology maximizes ROI for data centers, while its compatibility with various computing platforms ensures versatility. Weighing only 5.5 ounces, it delivers powerful performance in a compact form factor. ## Description With ConnectX-4 Lx EN, server and storage applications will achieve significant throughput and latency improvements resulting in faster access, real-time response and more virtual machines hosted per server. ConnectX-4 Lx EN for Open Compute Project (OCP) specification 2.0 improves network performance by increasing available bandwidth while decreasing the associated transport load on the CPU especially in virtualized server environments. Moreover, ConnectX-4 Lx EN introduces the multi-host technology, which enables a new innovative rack design that achieves maximum CAPEX and OPEX savings without compromising on network performance. ## Features - Open compute project form factor - Industry-leading throughput and low latency for web access and storage performance - Maximizing data centers' return on investment (ROI) with multi-host technology - Smart interconnect for x86, Power, ARM, and GPU-based compute and storage platform - Cutting-edge performance in virtualized overlay networks ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B019MRAM72 | | Best Sellers Rank | #959 in Internal Computer Networking Cards | | Brand | Mellanox | | Built-In Media | Mellanox network adapter | | Color | black | | Compatible Devices | Desktop, Laptop | | Customer Reviews | 4.6 out of 5 stars 5 Reviews | | Data Link Protocol | Ethernet | | Data Transfer Rate | 10240 Megabits Per Second | | Global Trade Identification Number | 07290107197878 | | Hardware Interface | PCIE x 8 | | Item Type Name | ConnectX-4 Lx EN Network Adapter | | Item Weight | 0.24 Pounds | | Manufacturer | INGB9 Music Vendor Code | | Mfr Part Number | MCX4121A-XCAT | | Model Number | MCX4121A-XCAT | | Unit Count | 1.0 Count | | Warranty Description | Unspecified | ## Product Details - **Brand:** Mellanox - **Hardware Interface:** PCIE x 8 - **Color:** black - **Compatible Devices:** Laptop, Desktop - **Data Link Protocol:** Ethernet - **Data Transfer Rate:** 10240 Megabits Per Second - **Global Trade Identification Number:** 07290107197878 - **Manufacturer:** INGB9 Music Vendor Code ## Images ![Mellanox ConnectX-4 Lx EN Network Adapter (MCX4121A-XCAT) - Image 1](https://m.media-amazon.com/images/I/51C6swxuCzL.jpg) ## Questions & Answers **Q: Does this come with half-height, full-height or both brackets?** A: The ones I received came with both brackets. **Q: Are the slots qsfp or sfp+?** A: They can support 10Gbps (sfp) and 25Gbps with SFP-128 cables that I use to connect server to Synology NAS (both with this Mellanox card). I don't believe that they support qsfp because I believe that would be 100Gbps (I believe you have to move up to the ConnectX-5 card for that). **Q: Can this card be installed in a "generic" server or only in an OCP system?** A: They can be installed in "generic" server if it has required slots. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by L***S on November 16, 2020* ### ⭐⭐⭐ Review *by S***N on May 24, 2017* ## Frequently Bought Together - Mellanox ConnectX-4 Lx EN Network Adapter (MCX4121A-XCAT) - 10GTEK 𝟭𝟬𝗚𝗕𝗮𝘀𝗲-𝗧 SFP+ to RJ-45 Transceiver, 10Gbe SFP+ Copper Ethernet CAT6a Module, up to 30m, for Cisco SFP-10G-T-S, Ubiquiti UniFi UF-RJ45-10G, Fortinet, TP-Link TL-SM5310-T and More - Mellanox ConnectX-4 Lx EN Network Adapter (MCX4121A-ACAT) --- ## 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.vu/products/90938552-mellanox-connectx-4-lx-en-network-adapter-mcx4121a-xcat](https://www.desertcart.vu/products/90938552-mellanox-connectx-4-lx-en-network-adapter-mcx4121a-xcat) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-05*