Mellanox CX4121A device auction prices

As of 6 November 2026, hammerhistory.com has recorded 8 auction sales of the Mellanox CX4121A device with a published hammer price, closed on 3 November 2026, on 1 auction site in 1 country. One sale is free to read: a Mellanox CX4121A device sold for AUD 205 on 3 November 2026.

Known model 8 sold with a price 0 at auction now 8 seen at auction

7 hammer prices are locked. See what every Mellanox CX4121A really sold for and know a fair price before you bid. Pay once, open at once, new sales included for a year.

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All sales 8

Sold	Built	Hours	Auction house	Place	Photos	Hammer price
2026-11-03 Mellanox (CX4121A) ConnectX-4 Lx 25GbE Dual-Port SFP28 PCIe Network In…	unknown	unknown	allbids.com.au	ALLBIDS Showroom Fyshwick, AU	1	EUR 126AUD 205 FREE
2026-11-03 Mellanox (CX4121A) ConnectX-4 Lx 25GbE Dual-Port SFP28 PCIe Network In…	unknown	unknown	Auction house	AU	1	in the report
2026-11-03 Mellanox (CX4121A) ConnectX-4 Lx 25GbE Dual-Port SFP28 PCIe Network In…	unknown	unknown	Auction house	AU	1	in the report
2026-11-03 Mellanox (CX4121A) ConnectX-4 Lx 25GbE Dual-Port SFP28 PCIe Network In…	unknown	unknown	Auction house	AU	1	in the report
2026-11-03 Mellanox (CX4121A) ConnectX-4 Lx 25GbE Dual-Port SFP28 PCIe Network In…	unknown	unknown	Auction house	AU	1	in the report
2026-11-03 Mellanox (CX4121A) ConnectX-4 Lx 25GbE Dual-Port SFP28 PCIe Network In…	unknown	unknown	Auction house	AU	1	in the report
2026-11-03 Mellanox (CX4121A) ConnectX-4 Lx 25GbE Dual-Port SFP28 PCIe Network In…	unknown	unknown	Auction house	AU	1	in the report
2026-11-03 Mellanox (CX4121A) ConnectX-4 Lx 25GbE Dual-Port SFP28 PCIe Network In…	unknown	unknown	Auction house	AU	1	in the report

Click a sale to see that device with its photos and details. A hammer price under EUR 100 is free to read.

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Mellanox CX4121A

IT, phones and consumer electronics

The CX4121A is a Mellanox ConnectX-4 Lx series network interface card, a dual port 25 gigabit Ethernet adapter using SFP28 connectors on a PCIe interface. It is designed for servers and data centre use, providing high throughput networking with features such as RDMA offload. It sits in Mellanox's mid range of NIC offerings between the lower speed ConnectX-3 cards and the higher throughput ConnectX-5 and later generations.

Built

since 2016

Replaced

ConnectX-3

Replaced by

ConnectX-5

We recognise this model across the auction sites and keep every one we see together.

On a used one

Check that the card is genuine Mellanox and not a relabelled OEM variant, confirm the firmware version and bracket type (low profile or full height), and ensure the SFP28 ports are undamaged and compatible with the intended switch and transceivers.

About Mellanox

Mellanox Technologies is an Israeli company known for developing high performance networking products, including InfiniBand and Ethernet adapters, switches and cables used in data centres and high performance computing environments. It became widely recognised for its ConnectX line of network interface cards. The company was acquired by Nvidia in 2020 and continues to operate as part of its networking division.

Founded 1999 · Yokneam, Israel · Part of Nvidia

All Mellanox models

8sold with a price

0at auction now

1auction sites

1countries

7 more hammer pricesin the report · EUR 9 once

sold, price lockedfree to read

Questions about Mellanox CX4121A auction prices

How many Mellanox CX4121A auction sales are on record?

8 sales with a published hammer price, closed on 3 November 2026, on 1 auction site in 1 country. 0 more closed without a sale.

Is a Mellanox CX4121A at auction now?

Not at the moment. The lots of this model that come to auction appear on this page while they are open, and every sale that closes with a price is added to the table.

Are the Mellanox CX4121A hammer prices free to read?

The oldest sale of every model is free to read, and so is every hammer price under the site's floor. The other 7 hammer prices of the Mellanox CX4121A open with an account: every sale of the model for a year, or one sale on its own.

Hammer prices are what the auction house recorded when the lot closed, before the buyer's premium, in the currency of the sale. A sale listed on a house's own site and on its platform counts once. Doubt a figure? Open the sale and its listing is linked there. How prices are recorded.