MCX512A-ACAT: NVIDIA/Mellanox ConnectX-5 Dual Port 25GbE SFP28 PCIe 3.0 Network Adapter
MPN: MCX512A-ACAT|By: NVIDIA/Mellanox

Starting from
$385
Indicative. Final pricing is confirmed with your quote.
In Stockships worldwide
- Condition:
- New (authorized channel)
- Warranty:
- Full manufacturer warranty
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Bulk order? Request volume pricing
Authorized & warrantied
Sourced through authorized distribution, with the full manufacturer warranty.
Compatibility checked
Validated against your server platform before dispatch.
Delivery & lead time
Confirmed with your quote, including expedited freight where available.
Business & public sector
POs, net terms and volume pricing for qualified organizations, government and edu.
Product overview
The NVIDIA/Mellanox ConnectX-5 dual port 25GbE SFP28 PCIe 3.0 network Adapter is supplied under part number MCX512A-ACAT. An adapter's driver and firmware support on the host operating system decides whether it is usable, not the slot it fits. This card is 25GbE. Tell us the OS and hypervisor version and we will confirm support before it ships.
If the part is wrong for your platform we will say so and suggest the one that is, which is cheaper for both of us than a return.
Specifications
General
- Manufacturer part number
- MCX512A-ACAT
- Product Type
- Network Adapters
- Manufacturer
- NVIDIA/Mellanox
Interfaces & connectivity
- Drive Interface
- PCIe
- Port Speed
- 25GbE
Specifications for MCX512A-ACAT as published by NVIDIA/Mellanox. Where a value is absent it is because we could not verify it, not because it does not exist. Ask and we will check.
Where the NVIDIA/Mellanox MCX512A-ACAT is deployed
- Swapping out a failed network adapter for MCX512A-ACAT under change control
- Replacing an adapter that is no longer driver-supported
- Adding a redundant network path to an existing host
Who this part is for
- Integrators building to a specified adapter and bracket height
- Engineers matching driver and firmware support to the installed OS
- Virtualisation teams needing SR-IOV or RDMA offload on a host
What you get ordering this from us
Ordered by part number
Quoted and supplied against MCX512A-ACAT specifically, so what arrives is what your build sheet asks for.
Correct bracket supplied
Low-profile or full-height is confirmed against the chassis so the lid closes on the first attempt.
Volume pricing
The listed price is per unit; tiered pricing applies at quantity and purchase orders are accepted.
Questions buyers ask about this part
Is MCX512A-ACAT genuine and is the warranty intact?
Yes. It ships new in NVIDIA/Mellanox packaging, which is what keeps the warranty and the firmware entitlement valid. Anything we cannot supply that way we tell you about before you order.
Will MCX512A-ACAT work in my server?
Send us the server model or service tag and we will confirm before you order. Part numbers alone do not always settle it: firmware revision and platform generation matter, and this is the check that prevents a return.
Do you accept purchase orders and quote at volume?
Yes. We quote against a purchase order and hold the price for the quote period, with tiered rates at quantity. Net terms are available once the account is approved.
Compare other Network Adapters we stock
| Model | Brand | Key spec | Availability | From |
|---|---|---|---|---|
| NVIDIA ConnectX-4 Lx 10/25GbE Dual-Port SFP28 Ethernet Network Adapter Card | NVIDIA Networking | Ports: 2x SFP28 | In Stock | $320 |
| Intel Ethernet Network Adapter X710-DA2 10GbE Dual-Port SFP+ | Intel | Ports: 2x SFP+ | In Stock | $320 |
| Broadcom NetXtreme-E P210P 10GbE Dual-Port SFP+ Ethernet Network Adapter Card | Broadcom | Speed: 10Gb/s | In Stock | $320 |
| Marvell QLogic FastLinQ QL41262 25GbE Dual-Port SFP28 Converged Network Adapter | Marvell | Speed: 25Gb/s | In Stock | $545 |
| Dell Broadcom 57414 25GbE Dual-Port rNDC Network Adapter for PowerEdge Servers | Dell Technologies | Speed: 25Gb/s | In Stock | $545 |
| HPE Ethernet 10Gb 2-Port 562FLR-SFP+ Network Adapter for ProLiant Servers | HPE | Speed: 10Gb/s | In Stock | $415 |
Browse all Network Adapters or everything we stock from NVIDIA/Mellanox.
Specifying a system, not just the part?
Most parts we ship go into a system we also build and support.
