EUR 
USD Mellanox ConnectX-5 Dual Port 100GB QSFP28 Low Profile Network Card - MCX556A-ECAT
Price match guarantee
Every Bytestock refurbished product completes a rigorous refurbishment process that includes full testing. Our refurbished hardware offers extensive savings, typically anywhere from 30%-70% off the MSRP.
| Manufacturer | MELLANOX |
|---|---|
| Network Ports | 2 Port Dual |
Technical Specifications
The Mellanox ConnectX-5 (MCX556A-ECAT) is a dual-port, 100Gb/s Ethernet (or Infiniband-capable) network adapter in a low-profile PCIe slot. It uses QSFP28 connectors and supports PCIe Gen 3/4 depending on the variant. With ultra-low latency (≈ 750 ns), hardware offloads for NVMe-over-Fabric, RDMA support, and optimisations for virtual switching, this card delivers high throughput per watt and pushes CPU load well down.
Use Cases and Applications
This NIC is ideal where high network performance and efficiency are essential. It excels in storage clusters or NVMe-oF setups where network overhead must be minimised. In virtualised infrastructure, it offloads packet processing to cut CPU usage. For telco or cloud environments, it supports SR-IOV and advanced overlay/offload features, enabling many tenants or virtual machines to share resources without bottleneck. It’s also perfect for high-speed interconnects between servers, traffic-intensive compute workloads, or AI/data science environments that shuffle large volumes of data.
Bytestock Reliability and Support
Every MCX556A-ECAT card is refurbished, validated and tested by Bytestock’s engineering team to ensure enterprise-level reliability. All units carry a 5-year return-to-base warranty and are shipped with secure packaging. With Bytestock, you're getting not just the hardware, but confidence that the NIC will stay up under intensive load, integrate smoothly into existing infrastructure, and contribute to performance and scalability targets.
Delivery Information
- We Ship Worldwide
Shipping quotes are calculated at checkout using our discounted rates with DHL, based on weight and location.
- Parts Orders
Despatched same day with DHL, providing your order and payment are both received before 4pm, Monday to Friday (except bank holidays).
- System Orders
If ordered before 4pm we endeavour to ship your configured system that same day. However, if your order is particularly large or complex, we’ll take a bit more time to ensure you receive the best possible product.
- DHL UK Express
Next business day delivery during the day to the UK mainland if ordered before 4pm.
- DHL UK Express Pre 12pm
Next day delivery by 12:00 noon to UK mainland addresses.
- DHL Express Worldwide
2-3 day delivery during the day to almost all European business centres and 2-4 days for most other worldwide addresses (some shipments to EU addresses may face delays outside of our control due to customs charges).
- Collection / Own Shipping Account
If you wish to collect your order in person or use your own shipping account (UPS, DHL, TNT and FedEx). Please add your shipping instructions to your order at checkout, or speak to our team on LiveChat or +44 (0) 1753 965 777.
Up to 5-Year Warranty
1-Year Warranty
Extended Warranty Option (3 and 5 Years)
For older generation products that come with a 1-year warranty, we offer the option to extend the warranty to 3 or 5 years for an additional charge.
