Product Description
IBM EN26 PCIe4 4-Port 25/10/1 GbE RoCE SFP28 Adapter (CCIN EC2A, P/N 03HD066)
The IBM EN26 is a high-performance PCIe4 quad-port Ethernet adapter featuring four SFP28 ports that support 25 Gb/s Ethernet with automatic fallback to 10 Gb/s and 1 Gb/s speeds. This full-height adapter delivers RDMA over Converged Ethernet (RoCE) for low-latency, high-throughput data transfer, alongside standard Ethernet NIC functionality. Designed for IBM Power Systems servers with PCIe Gen4 infrastructure, it uses SFP28 transceivers for flexible fiber or DAC connectivity, making it ideal for modern data center networking, virtualization, cloud workloads, and accelerated storage access in AIX, IBM i, Linux, and VIOS environments.
Features
- Four SFP28 ports supporting 25 Gb/s Ethernet (with auto-negotiation/fallback to 10 Gb/s and 1 Gb/s)
- PCIe 4.0 x16 interface for maximum bandwidth and reduced latency
- RDMA over Converged Ethernet (RoCE) support for ultra-low latency data transfers and CPU offload
- Ethernet NIC functionality with advanced offloads including TCP/UDP/IP checksum, large send/receive offload, RSS, and VLAN tagging
- Support for SFP28 transceivers: short-range optics (SR), direct attach copper (DAC), or active optical cables (AOC)
- Jumbo frame support (up to 9,600 bytes) for improved network efficiency
- SR-IOV capability for virtualization and multi-tenant environments
- Short, full-height form factor with bracket for standard PCIe4 slots
Technical Specifications
- Feature Code: EN26
- Part Number: 03HD066
- CCIN: EC2A
- Bus Interface: PCIe Express 4.0 x16
- Ports: 4 × 25 Gb Ethernet (SFP28)
- Speeds: 25 Gb/s, 10 Gb/s, 1 Gb/s per port (auto-negotiating/fallback)
- Protocols: Ethernet NIC, RDMA over Converged Ethernet (RoCE)
- Cabling Supported: SFP28-compatible (SR optics multimode fiber, DAC/AOC cables; distances vary by transceiver)
- Form Factor: Short, full-height PCIe adapter
- Warranty: This product comes with a 60-day warranty covering parts and functionality.
Compatibility
Fully compatible with select IBM Power Systems models supporting PCIe4 slots, running AIX, IBM i (with appropriate tech refresh levels), Linux, or VIOS:
- 9080-HEU (Power E1080)
- 9105-22A (Power S1022)
- 9208-22B (Power S1022)
- 9043-MRX (Power E1050)
- 9223-42H / 9223-42S
- 9824-22A / 9824-42A
- 9856-22H / 9856-42H
- Additional Power10 and later models with PCIe4 infrastructure (consult system documentation for exact placement, slot priorities, and OS requirements)
Warranty
This product comes with a 60-day warranty covering parts and functionality.
