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🚀 Elevate your data center game with Mellanox ConnectX-4 Lx EN — where speed meets smart innovation!
The Mellanox ConnectX-4 Lx EN Network Adapter (MCX4121A-ACAT) delivers industry-leading 25.6 Gbps Ethernet throughput with ultra-low latency, designed for Open Compute Project 2.0 form factor. Featuring PCIe x8 interface and multi-host technology, it optimizes data center ROI by enabling advanced rack designs and supporting diverse compute platforms including x86, Power, ARM, and GPU. Ideal for virtualized environments, it boosts network performance and maximizes VM density per server.
| ASIN | B011HVAZ78 |
| Best Sellers Rank | #190 in Internal Computer Networking Cards |
| Brand | Mellanox |
| Built-In Media | Mellanox network adapter |
| Color | Assorted |
| Compatible Devices | Desktop |
| Customer Reviews | 3.8 out of 5 stars 9 Reviews |
| Data Link Protocol | Ethernet |
| Data Transfer Rate | 25600 Megabits Per Second |
| Global Trade Identification Number | 07290107197861 |
| Hardware Interface | PCIE x 8 |
| Item Type Name | ConnectX-4 Lx EN Network Adapter |
| Item Weight | 0.18 Pounds |
| Manufacturer | INGB9 Music Vendor Code |
| Mfr Part Number | MCX4121A-ACAT |
| Model Number | MCX4121A-ACAT |
| Unit Count | 1.0 Count |
| Warranty Description | Unspecified |
A**T
Simplest installation experience you could possibly expect
Installation literally couldn't be simpler. I popped one of these into a PowerEdge R340 and another into an R720xd with zero fussing from either machine's BIOS (but if you're still cheaping-out by not buying the sliding rails, stop that. Go buy the rails with this, so that you can install them while you have that honking beast pulled out. Then, at least next time, you can enjoy the benefits of civilized rack life). Debian and BSD bare-metal recognized this card immediately. No driver install or configuration of any sort was required. It was 100% automatic*. Next, I popped in a couple of Cisco-branded 10Gbps fiber transceivers and some LX cable and they were chatting like old friends. Benchmarks between servers on the same network chatting via a Cisco 3850 (one having a trunk interface, the other an "access"-type) showed transfer rates getting very close to 10Gbps. I think it was 9.8-something Gbps. Very nice! I'm aware that procedure probably sounds really difficult to the average person. But I assume that if you're spending a portion of the precious time you have left on Earth reading reviews on a Mellanox card, you're quite far from average in more ways than one! It's ok, man. You're among family here. We understand. Now stop stressing, buy the card, and be happy. * OK, I'm lying, you do of course have to configure the network address and all of that on the interface, but I'm ASSuMEing that you know that to be true of any card you get.
T**R
Bad firmware
Card came with incompatible firmware. Packaging looked new or possibly refurbished, however on two systems (Win 11, and RHEL 9) the card was getting only 1 GbE link. I had to manually find the driver on NVidia's website and download the correct firmware and burn it to the card using their terminal utility. The firmware that was on the card was a version that was not documented as released or in beta, NVidia provided feedback that it is highly suspicious.
S**L
Best high speed high end network card.
I installed it in a RHEL 7 system and it drivers detected the card without any issues.
S**A
Great inexpensive 2x 10/25 card
Great inexpensive 2x 10/25 card for server needs. Using with dual DAC cables, works reliably in a 24/7 environment.
L**S
Fantastic card provides both 10G and newer 25G Ethernet speeds
Right now the best buy on the market for 10/25G card. I found the 10G performance to be about 10% faster then equivalent Intel card and 25G performance was even better. My go to card.
Trustpilot
1 week ago
2 weeks ago