Can a unifi SFP cable be connected to this card directly?

If you mean the copper SFP28 DAC cable, then yes. I am currently using that. For a fiber cable, you need a transceiver.

I have a qnap 873e w/qxg-10g1t add-in. will the mcx4121a-acat 25gigabit ethernet card support this using cat7? what speed could i expect?

This NIC uses SFP28 adaptor. If you use SFP+ transceiver with 10G base-T, you will get 10G speed

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ConnectX-4 Lx EN Network Adapter (MCX4121A-ACAT)

Product ID: 299179111

Details

Brand
Mellanox
Colour
Assorted
Compatible devices
Desktop
Data link protocol
Ethernet
Hardware interface
PCIE x 8

⚡25.6 Gbps blazing throughput

💼Multi-host tech for max ROI

🖧PCIe x8 high-speed interface

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€ 224.03

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In stock

Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Elevate your network game with ConnectX-4 Lx EN — where speed meets smart innovation!

OPEN COMPUTE PROJECT READY - Future-proof your infrastructure with OCP 2.0 form factor and standards compliance.
BLAZING 25 6 GBPS THROUGHPUT - Experience ultra-fast data transfer that powers seamless web access and storage.
UNIVERSAL SMART INTERCONNECT - Seamlessly integrates with x86, Power, ARM, and GPU platforms for versatile deployment.
CUTTING EDGE MULTI HOST TECHNOLOGY - Maximize your data center ROI with innovative rack designs and shared resources.
OPTIMIZED FOR VIRTUALIZED ENVIRONMENTS - Host more VMs per server with industry-leading low latency and CPU offload.

The ConnectX-4 Lx EN Network Adapter (MCX4121A-ACAT) delivers industry-leading 25.6 Gbps Ethernet throughput with ultra-low latency, optimized for virtualized server environments. Featuring multi-host technology and PCIe x8 interface, it supports diverse compute platforms including x86, Power, ARM, and GPU. Designed to OCP 2.0 standards, it maximizes data center ROI by enabling innovative rack designs and efficient CPU offloading.

Specifications

ASIN	B011HVAZ78
Best Sellers Rank	#17,258 in Computers ( See Top 100 in Computers ) #38 in Network Cards
Brand	Mellanox
Built-In Media	Mellanox network adapter
Color	Assorted
Compatible Devices	Desktop
Customer Reviews	1.0 1.0 out of 5 stars (1)
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 Count

Reviews

I**D

Israeli made!!!!!

27.07.2021

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