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Mellanox ConnectX-4 MCX4121A-ACAT 2-Ports SFP28 25Gbps PCI-E 3.0 Network Adapter

cloudtech-0
(27)
PrivateRegistered as a private seller
Consumer protection regulations resulting from EU consumer law are therefore not applicable. eBay buyer protection still applies to most purchases.
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US $83.80
Approximately£63.42
or Best Offer
Condition:
Used
4 available
Breathe easy. Returns accepted.
Postage:
Free USPS Priority Mail®.
Located in: Pittsburgh, Pennsylvania, United States
Delivery:
Estimated between Sat, 6 Dec and Fri, 12 Dec to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the delivery service selected, the seller's delivery history and other factors. Delivery times may vary, especially during peak periods.
Returns:
30 days return. Buyer pays for return postage. If you use an eBay delivery label, it will be deducted from your refund amount.
Payments:
    Diners Club

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eBay item number:397036415511
Last updated on 22 Oct, 2025 11:31:34 BSTView all revisionsView all revisions

Item specifics

Condition
Used: An item that has been previously used. The item may have some signs of cosmetic wear, but is ...
Brand
Mellanox
Form Factor
Plug-in-Module
Type
Network Adapter Card
External Interfaces
Ethernet/ Network Cards
Number of Ports
2 Ports
Model
Mellanox Connectx-4
MPN
MCX4121A-ACAT
Internal Interfaces
SFP28
Maximum Data Rate
25 Gbps
UPC
Does Not Apply
Category

Item description from the seller

About this seller

cloudtech-0

100% positive Feedback•70 items sold

Joined Jun 2023
Usually responds within 24 hours
Registered as a private sellerThereby, consumer rights stemming from EU consumer protection law do not apply. eBay buyer protection still applies to most purchases.
Seller's other itemsContact

Seller Feedback (8)

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5.0
7 product ratings
  • 7 users rated this 5 out of 5 stars
  • 0 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 7 reviews
  • by hi-networks
    11 Nov, 2024

    It's working on my QNAP TS-464.

    I am using it with my QNAP TS-464. It works perfectly. I am getting transfer speeds of close to 10Gbps, at less than half the price of genuine QNAP products.

    Verified purchase: YesCondition: NewSold by: nhlfy411

  • by gritz1975
    30 Aug, 2024

    Powerful, yet not expensive.

    I bought 2, for Proxmox and Truenas. In a direct connection between the two I managed to get around 2GB/s transfer rates. Depending on your hardware and tuning of course.

    Verified purchase: YesCondition: Pre-ownedSold by: hkebl-002

  • by d6zilcv5shy@deleted
    15 Mar, 2019

    good condition & performance

    1.very good condition, like a new card. 2.good performance, up to 25Gb/s.

    Verified purchase: YesCondition: Pre-ownedSold by: central_valley_computer_parts_inc

  • by olehenrikj
    01 Aug, 2025

    Worked without issues in my Unraid serve...

    Worked without issues in my Unraid server, using 10GbE.

    Verified purchase: YesCondition: NewSold by: nhlfy411

  • by awake666
    21 Oct, 2024

    very good

    It's a very good product

    Verified purchase: YesCondition: Pre-ownedSold by: nhlfy411

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