Mellanox MCX311A-XCAT CX311A ConnectX-3 EN 10G Ethernet 10GbE SFP+ PCIe NIC

Winners Hardware

(1752)

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US $24.61/ea

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Was US $25.90

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Condition:

New

Sale ends in: 2d 19h

Quantity:

More than 10 available544 sold

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Buy 4 or more for 23.87 each one

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US $5.00 eBay SpeedPAK Standard.

Located in: Shenzhen, China

This item includes applicable import fees—you won’t pay anything extra after checkout.

Delivery:

Estimated between Wed, Sep 17 and Tue, Sep 23 to 94104

Returns:

30 days returns. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.

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eBay item number:115724338965

Last updated on Aug 20, 2025 01:41:22 PDTView all revisionsView all revisions

Item specifics

Condition: New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. See all condition definitionsopens in a new window or tab

External Interfaces: Cable, SFP, PCI, Network card

Custom Bundle: No

MPN: CX311A, MCX311A-XCAT

Maximum Data Rate: 10 Gbps

Brand: Mellanox

Form Factor: CompactFlash

Type: Network Interface Controller

Number of Ports: 1 Port

Manufacturer Warranty: 1 Year

Model: Mellanox MCX311A-XCAT CX311A ConnectX-3 EN

Country/Region of Manufacture: China

Compatible Port: PCI Express x16, PCI Express x4, PCI Express x8

Internal Interfaces: SFP

Item description from the seller

About this seller

Joined Nov 2007

Usually responds within 24 hours

Winners was founded in 2006. It is your excellant source for server, storage, networking and communication products, such as sfp,sfp+,sfp28,qsfp,qsfp28, network card, HBA,expansion card, raid ...

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Detailed seller ratings

Average for the last 12 months

Accurate description

5.0

Reasonable shipping cost

5.0

Shipping speed

5.0

Communication

5.0

QSFP/SFPAOC Cable w/ TransceiversNetwork CardRaid CardsMPOQSFP+ to SFP+ AdapterLC CableOther

Seller feedback (1,908)

This item (53)

All items (1,908)

*****- Feedback left by buyer.
Past year
Verified purchase
These work great, they are infact pcie 4x so they can be used fully with a m.2 nvme socket as long as it can do genuine pcie 4x, I have this modded into a jonsbo n2 along with a dual port 25gb sfp nic to bridge my 10gb network to a 25gb local lan setup, it works great
Reply from: nhlfy411- Feedback replied by seller nhlfy411.- Feedback replied by seller nhlfy411.
hank you so much for taking the time to share your positive experience with our product! Your feedback truly brightens our day and reinforces our commitment to delivering exceptional quality and service. We’re thrilled to hear that the product met your expectations, and it’s customers like you who make our efforts worthwhile. Please don’t hesitate to reach out if you need anything—we’re here to help!
*****- Feedback left by buyer.
Past 6 months
Verified purchase
Fast delivery, the card seems new. The package wasn't too big so it could easily fit into my mail box. I didn't have the time to properly test it. I think it would need a firmware update (not sure tho). good price, recommend 100%
*****- Feedback left by buyer.
Past year
Verified purchase
Received with fiber transceivers installed (bought in a separate purchase from Winners Hardware). All working perfectly. Good value and arrived in excellent condition. Will buy from again! Thank you!
Reply from: nhlfy411- Feedback replied by seller nhlfy411.- Feedback replied by seller nhlfy411.
Thank you so much for taking the time to share your positive experience with our product! Your feedback truly brightens our day and reinforces our commitment to delivering exceptional quality and service. We’re thrilled to hear that the product met your expectations, and it’s customers like you who make our efforts worthwhile. Please don’t hesitate to reach out if you need anything—we’re here to help!

See all feedback

Product ratings and reviews

4.5

8 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
1 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 8 reviews

by hani_6429
Mar 29, 2024
Great card, doesn't like e-cores on 12th-13th Gen Intel CPU based systems...
Great value for a ConnectX-3 PCIex 3.0 x4 single port card. Windows 10/11 have a driver that will get you going, but i highly recommend you get the last provided one from nVidia. There is also an issue, on 12th and 13th gen Intel CPUs where you will have to disable e-cores for the system to boot under Windows. The last drivers nVidia provided do not handle e-cores at all and will cause the system to crash reliably. This card works with all of the 10gig SR optics and DAC cables i have. I just probably should have gone with a ConnectX-4 or 5 card, as they're not much more than these are. ConnectX-5 cards are the oldest nVidia still supports with updated drivers. All older cards are left to the mercy of the last provided drivers.Great value for a ConnectX-3 PCIex 3.0 x4 single port card. Windows 10/11 have a driver that will get you going, but i highly recommend you get the last provided one from nVidia. There is also an issue, on 12th and 13th gen Intel CPUs where you will have to disable e-cores for the system to boot under Windows. The last drivers nVidia provided do not handle e-cores at all and will cause the system to crash reliably. This card works with all of the 10gig SR optics and DAC cables i have. I just probably should have gone with a ConnectX-4 or 5 card, as they're not much more than these are. ConnectX-5 cards are the oldest nVidia still supports with updated drivers. All older cards are left to the mercy of the last provided drivers.
Verified purchase: YesCondition: Pre-OwnedSold by: pcsworld0812
by cden3780
May 23, 2024
Cheap entry into 10Gbe that works
Installed it into my TrueNAS Core server running X470D4U ASRock Rack motherboard and it was detected just fine after changing a BIOS setting .. I have it connected via a 10Gbe copper DAC SFP+ cable into a cheap unmanaged switch that has 4 x 2.5GB ports + 2 x 10GB SFP+ ports. I can't test actual throughput though as my PC's are only 2.5GB
Verified purchase: YesCondition: NewSold by: nhlfy411
by toest2
Jan 31, 2024
It just works!
One of the best ways to add sfp+ to your Windows or Linux computer. Windows and Linux will load the driver automatically so you don't need to worry about finding it online. You can also upgrade the firmware on the card but I haven't noticed a difference so I probably wouldn't bother (unless you're having issues).
Verified purchase: YesCondition: Pre-OwnedSold by: pcsworld0812
by briahil3
Aug 01, 2025
Works great. Had older firmware, but eas...
Works great. Had older firmware, but easy to reflash.
Verified purchase: YesCondition: Pre-OwnedSold by: jb-electronic
by johanjohanfirdi
Nov 25, 2020
great product, stable and reliable.
good product, stable and smooth.
Verified purchase: YesCondition: Pre-OwnedSold by: xuanwen-2011

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