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Mellanox ConnectX-4 Lx EN 25GbE (MCX4121A-ACAT) Dual-Port SFP28 Network Card

roberle_161
(896)
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US $70.00
ApproximatelyC $96.19
Condition:
Open box
People are checking this out. 2 have added this to their watchlist.
Breathe easy. Returns accepted.
Pickup:
Free local pickup from Hayward, California, United States.
Shipping:
US $7.10 (approx C $9.76) USPS Ground Advantage®.
Located in: Hayward, California, United States
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Delivery:
Estimated between Sat, Aug 9 and Wed, Aug 13 to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the shipping service selected, the seller's shipping history, and other factors. Delivery times may vary, especially during peak periods.
Returns:
30 days return. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.
Payments:
     Diners Club

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Seller assumes all responsibility for this listing.
eBay item number:187410330941
Last updated on Jul 13, 2025 15:27:32 EDTView all revisionsView all revisions

Item specifics

Condition
Open box: An item in excellent, new condition with no wear. The item may be missing the original ...
Compatible Brand
For GIGABYTE, Universal, Mellanox
External Interfaces
RJ-45, Ethernet/ Network Cards, Ethernet (RJ-45), PC Card (PCMCIA) Type I
MPN
MCX4121A-ACAT
Maximum Data Rate
50G
Compatible Product Line
Universal
Brand
Mellanox
Form Factor
Network Adapter
Type
Network Adapter
Number of Ports
2 Ports
Model
Mellanox ConnectX-4
Country/Region of Manufacture
China
Compatible Port
PCI Express, PCI Express x8
Internal Interfaces
SFP, SFP+, SFP28
UPC
100028806735

Item description from the seller

About this seller

roberle_161

100% positive feedback•968 items sold

Joined Dec 2015
Seller's other itemsContact

Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable shipping cost
4.9
Shipping speed
5.0
Communication
5.0

Seller feedback (406)

All ratings
Positive
Neutral
Negative
  • 2***a- Feedback left by buyer.
    Past 6 months
    Verified purchase
    SSDs and adapter were exactly as described and packed well in multiple layers of padding and boxes. Thank you to the seller for making a thorough and detailed listing
    4 WD IX SN530 2TB M.2 With 2.5 U.2 NVMe ADAPTER 8TB GEN 3X4 Viking Enterprise (#187143807947)
  • n***k (12)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Shipping was quick, packaging was great and kept my items safe, and item was perfect and as described. Great seller and very happy with my purchase.
    Vintage Eberhard Faber Microtomic 600 6H Box Of 12 Pencils USA (#186055288914)
  • e***e (483)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Fast shipping with great packaging. Just as described.
    Vintage Dixon El Dorado 201 Medium Indelible Box Of 12 Pencils USA (#186336934172)
See all feedback

Product ratings and reviews

Learn more
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
    Nov 11, 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
    Aug 30, 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
    Mar 15, 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
    Aug 01, 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
    Oct 21, 2024

    very good

    It's a very good product

    Verified purchase: YesCondition: Pre-OwnedSold by: nhlfy411

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