VPI Network Adapter Mellanox MCX456A-ECAT ConnectX-4 VPI EDR IB 100GbE Dual QSFP28 Adapter Card Dual-Port QSFP28, PCIe 3.0 x16, Support EDR InfiniBand & 100GbE RoCEv2 Why Buy This ✓ Model: MCX456A-ECAT ConnectX-4 VPI Dual-Port QSFP28 Network Adapter ✓ VPI technology: auto switch EDR 100Gb/s InfiniBand / 100GbE Ethernet ✓ PCIe 3.0 x16, hardware RoCEv2, SR-IOV, GPUDirect, tunnel offload ✓ Fully tested for HPC, AI cluster, storage & cloud virtualization environment What You'll Get
Genuine Mellanox MCX456A-ECAT ConnectX-4 VPI dual-port adapter card. Equipped with Virtual Protocol Interconnect (VPI), each port supports EDR 100Gb/s InfiniBand or 100GbE Ethernet, flexible for mixed IB/Ethernet clusters.
Supports RoCE v1/v2, SR-IOV virtualization, GPUDirect, VXLAN/NVGRE hardware offload, ultra-low latency for high-performance computing, AI training cluster, parallel storage and datacenter virtualization.
QSFP28 transceivers, DAC/AOC cables are NOT included.
Key Features
- Part Number: MCX456A-ECAT ConnectX-4 VPI
- Ports: 2×QSFP28, EDR 100Gb/s InfiniBand / 100GbE Ethernet per port
- Host Interface: PCIe 3.0 x16 (backward compatible PCIe 2.0/1.1)
- Virtualization: SR-IOV, up to 128 virtual functions, hardware I/O virtualization
- Network Offload: RoCEv1/v2, GPUDirect, VXLAN/Geneve/NVGRE tunnel offload
- Form Factor: Full-height (Tall) bracket, low-profile bracket not included
- Application: HPC Cluster, AI Compute, Parallel Storage, Cloud & Virtualization
Specifications Item Detail Model MCX456A-ECAT ConnectX-4 VPI Port Configuration Dual QSFP28 Protocol Support EDR 100Gb/s IB / 100GbE RoCE PCIe Bus PCIe 3.0 x16 Bracket Full Height Standard Bracket Included Accessories Card only, transceivers & cables excluded Condition Server pulled Mellanox adapter card, fully functional, complete testing before shipment.
- Full testing: PCIe detection, link training, RoCE, virtual function stability verification
- No liquid damage, no burnt traces, no repair or rework history
- PCIe gold fingers and QSFP28 cages clean and intact
- SFP28 transceivers, DAC/AOC optical cables are NOT included
- Ships inside anti-static protective bag
⚠ Important — Read Before Buying:
Model MCX456A-ECAT VPI dual-port card. Transceivers and network cables not included. VPI mode requires firmware configuration to switch between InfiniBand or Ethernet. Please confirm host OS, driver and firmware compatibility. We take no responsibility for incompatibility caused by improper firmware or unsupported platform. Package Includes
1 × Mellanox MCX456A-ECAT ConnectX-4 VPI Network Adapter + anti‑static protective bag
Warranty & Returns Warranty 30‑day functional warranty from delivery date Returns 30‑day returns accepted (buyer pays return shipping if not DOA) Testing Every unit fully tested before dispatch for stable operation Shipping
- Dispatched within 1–3 business days after payment
- Tracking number provided for every order
- Standard & Expedited options at checkout
- International shipping via Global Shipping Program
Why Buy From Us
- Real stock — what you see is what ships
- Tested inventory — no dead‑on‑arrival surprises
- Fast response — message us anytime before or after purchase
- Trusted seller — serving HPC & AI networking customers worldwide
FAQ
Q: Can I switch between InfiniBand and Ethernet mode?
A: Yes, VPI function supports mode switch via mstflint firmware configuration, each port works either IB or Ethernet.
Q: Does this card come with QSFP28 transceivers?
A: No, transceivers and cables are not included, only adapter card.
Q: Is it compatible with multi-GPU AI training cluster?
A: Yes, supports GPUDirect & RoCEv2, widely used in HPC and distributed AI compute environments.
Questions about compatibility? Message us before ordering — we reply fast.
