Sell Your Mellanox ConnectX-6 Lx 25GbE Dual SFP28
Updated October 7, 2026
per unit, non-binding indicative range
Non-binding — firm quote in 4 business hours.
Selling more than one part? Add each one, then send a single quote — the total and a free label cover the whole shipment.
What condition pays what
| Condition | Means | Pays |
|---|---|---|
| Working | Verified on our bench | $85–$106 |
| Damaged | Declined politely | declined |
Payout history
The payout for a Mellanox ConnectX-6 Lx 25GbE Dual SFP28 is down 8% since September 28, 2026. Each row is the range we published on that date for a used, working unit.
| Date | Indicative range | Change |
|---|---|---|
| Oct 7, 2026 | $85–$106 | −8% |
| Sep 28, 2026 | $92–$115 | — |
Past ranges are a record, not an offer. Your firm quote is priced on the day you ask.
What this item is
The Mellanox ConnectX-6 Lx is a dual-port 25GbE SFP28 adapter on PCIe 4.0 x8, the current mainstream 25G server NIC in Dell, HPE, and Supermicro builds. Cards come to us in decom lots alongside the ConnectX-4 Lx and ConnectX-5 they replaced. We verify link on both ports; original brackets and intact SFP cages help the grade. Sell ConnectX-6 Lx cards in any quantity: prepaid label, payment within 48 hours of testing. Look for MCX631102AN-ADAT.
Part numbers we buy
- MCX631102AN-ADAT
- MCX631102AS-ADAT
- MCX631102AC-ADAT
- MCX631102AE-ADAT
- CX631102A
- P42044-B21
- P42934-001
- 4XC7A62580
Don't see yours? Paste it into the quote form — we match variants daily.
How it works
- Firm quote by email within 4 business hours (7 days a week, 7am–8pm ET).
- Ship free with our prepaid label — postmark within your lock window.
- Paid by Zelle, PayPal, or check within 48 hours of testing.
If testing disagrees with your description, you get photo evidence and a choice: revised offer or free return.
Questions
How much is a Mellanox ConnectX-6 Lx 25GbE Dual SFP28 worth in 2026?
Our current indicative payout is $85-$106 per unit in used working condition, with the firm number emailed within 4 business hours of your quote request. The range moves with the market — the Payout Index tracks the price we pay week over week.
Is a single card worth mailing in?
Yes — network adapters have strong value density, and there is no order minimum, so even a single card is worth sending. The label is free either way, so the math is just the payout.
How fast do I actually get paid?
Zelle or PayPal within 48 hours of test completion; typical mail-to-money is 5-7 days end to end. Your quote locks before you ship, and if the market drops after we quote, we pay the quote anyway.