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 Megabits
Global Trade Identification Number

⚡25.6 Gbps blazing throughput

💼multi-host tech for max ROI

🕒ultra-low latency for real-time response

$262.12

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Description

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

OCP 2 0 FORM FACTOR - Future-proof your infrastructure with industry-standard open compute compatibility.
MULTI HOST TECHNOLOGY - Maximize your data center ROI with innovative rack designs and shared resources.
BLAZING 25 6 GBPS THROUGHPUT - Experience lightning-fast data transfer that keeps your network ahead of the curve.
ULTRA LOW LATENCY PERFORMANCE - Cut delays to near zero for seamless virtualized and real-time applications.
CROSS PLATFORM SMART INTERCONNECT - Seamlessly integrates with x86, Power, ARM, and GPU compute/storage platforms.

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 server environments. Featuring Open Compute Project 2.0 form factor and multi-host technology, it enables innovative rack designs that maximize data center ROI by reducing CPU load and supporting diverse compute platforms including x86, Power, ARM, and GPU. Ideal for professionals demanding cutting-edge network performance and efficiency.

Specifications

ASIN	B011HVAZ78
Best Sellers Rank	#189 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

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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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

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Fantastic experience overall. Will recommend to friends and family.

1 month ago

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$262.12

Duties & taxes included

In stock

Sold byAmazon EcuadorDelivered 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 Ecuador.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

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Best international shipping I've ever tried. Worth every penny!

3 days ago

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