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

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

Product ID: 83883544

Details

Brand
Mellanox
Color
Assorted
Compatible Devices
Desktop
Data Link Protocol
Ethernet
Data Transfer Rate
25600
Global Trade Identification Number

⚡25.6 Gbps blazing throughput

💼multi-host tech for max ROI

🕒ultra-low latency for real-time response

₨2701

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Description

🚀 Elevate your data center game with Mellanox ConnectX-4 Lx EN — where speed meets smart savings!

MULTI HOST TECHNOLOGY - Revolutionize your rack design with multi-host support, slashing CAPEX and OPEX without compromise.
OPEN COMPUTE PROJECT READY - Built to OCP 2.0 specs, ensuring future-proof compatibility and industry-leading innovation.
BLAZING 25 6 GBPS THROUGHPUT - Experience lightning-fast data transfer that powers your high-demand web and storage apps.
ULTRA LOW LATENCY PERFORMANCE - Cut delays to near zero for seamless virtual machine hosting and real-time responsiveness.
CROSS PLATFORM SMART INTERCONNECT - Optimized for x86, Power, ARM, and GPU platforms to unify your compute and storage ecosystem.

The Mellanox ConnectX-4 Lx EN Network Adapter (MCX4121A-ACAT) delivers industry-leading 25.6 Gbps Ethernet throughput and ultra-low latency, optimized for virtualized environments. Featuring multi-host technology and Open Compute Project 2.0 form factor, it maximizes data center ROI by enabling innovative rack designs and seamless integration across x86, Power, ARM, and GPU platforms.

Specifications

ASIN	B011HVAZ78
Best Sellers Rank	#327 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	2.88 ounces
Manufacturer	INGB9 Music Vendor Code
Mfr Part Number	MCX4121A-ACAT
Model Number	MCX4121A-ACAT
Unit Count	1 Count
Warranty Description	Unspecified

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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₨2701

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Seychelles.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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