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

Winners Hardware

(1788)

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US $24.61

or Best Offer

Was US $25.90 (5% off)

Condition:

New

Quantity:

More than 10 available36 sold

Breathe easy. Returns accepted.

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Shipping:

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 Mon, Nov 17 and Fri, Nov 21 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:115872613250

Last updated on Oct 28, 2025 02:53:40 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

Country of Origin: Israel

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

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

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 (1,951)

This item (6)

All items (1,951)

*****- Feedback left by buyer.
Past 6 months
Verified purchase
Shipping took quite a long time as I didn't realize these were shipped from China, but they arrived in good condition and work great.
*****- Feedback left by buyer.
Past 6 months
Verified purchase
The card arrived in perfect condition, in its box just as it can be seen on the picture. The shipping was quicker than expected, great seller, definitely recommended from my side.
*****- Feedback left by buyer.
Past 6 months
Verified purchase
Amazing experience with this seller. Item was exactly as described, shipping was incredibly fast. EXTREMELY HAPPY!

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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