Product Description
IBM EJ20 PCIe x16 to CXP Optical or Cu Converter Adapter for PCIe3 Expansion Drawer (CCIN 2CF5, P/N 02WF001)
The IBM EJ20 is a PCIe Gen3 x16 to CXP converter adapter designed for IBM Power Systems servers. This full-height card converts a PCIe Gen3 x16 slot into a single CXP port, enabling high-speed optical (AOC) or copper (Cu) cable connectivity to PCIe3 I/O expansion drawers (#ELMX, #ELMY, #ELMZ, #ELC1, #ELC2, etc.), providing scalable PCIe lane expansion for additional adapters, NVMe SSDs, NICs, or HBAs in AIX, IBM i, Linux, and VIOS environments on Power8, Power9, and select Power10 systems.
Product Description
The IBM EJ20 (feature code EJ20, CCIN 2CF5, part number 02WF001) is a PCIe Gen3 x16 host-side converter adapter that installs in a server PCIe slot and outputs to one CXP port (QSFP+ compatible). It supports active optical cables (AOC) for long-reach (up to 100 m) or copper DAC cables for short-reach connectivity to PCIe3 expansion drawers, extending PCIe Gen3 x16 bandwidth (up to 128 Gbps aggregate, 8 GT/s per lane) with minimal latency. The adapter includes retimers and signal conditioning for reliable transmission and is engineered for attaching remote PCIe3 I/O drawers to add extra PCIe slots or storage/networking capabilities without consuming additional host slots. It is fully IBM-qualified for low-latency, high-throughput expansion in Power Systems, making it ideal for high-density virtualization, large databases, AI/ML training, and mission-critical workloads requiring remote drawer placement on AIX, IBM i (iSeries/AS/400), Linux, and VIOS platforms.
Features
- PCIe Gen3 x16 host interface with one CXP port output
- Supports active optical cables (AOC) for long-distance, low-latency connectivity
- Compatible with copper DAC cables for short-reach applications
- Up to 128 Gbps aggregate bandwidth (PCIe Gen3 x16)
- Designed for attachment to PCIe3 I/O expansion drawers (#ELMX, #ELMY, #ELMZ, etc.)
- Hot-plug cable support for zero-downtime maintenance
- Signal retiming and conditioning for reliable optical/copper transmission
- Full IBM firmware integration and qualification for Power8/Power9/Power10
- Backward compatible with select Gen2 configurations (reduced bandwidth)
Technical Specifications
- Feature Code: EJ20
- CCIN: 2CF5
- Part Number: 02WF001
- Interface (Host): PCIe Gen3 x16
- Interface (Device): 1 × CXP port (QSFP+ compatible, 4-lane)
- Bandwidth: Up to 128 Gbps aggregate (PCIe Gen3 x16, 8 GT/s per lane)
- Form Factor: PCIe full-height, half-length card
- Cable Support: Active Optical Cables (AOC, e.g., ECC8 pair); copper DAC (short reach)
- Reach: Up to 100 meters (AOC fiber, typical); copper limited to ~3–5 m
- Power Consumption: ~12–20 W typical
- Cooling: Passive heatsink; relies on server airflow
- Compatibility: Power8, Power9, select Power10 models with PCIe Gen3 slots
Compatibility
The IBM EJ20 PCIe x16 to CXP Converter Adapter is compatible with:
- Power Systems Models:
- Power8: S814 (8286-41A), S822/S824 (8284-22A), E870/E880 (9119-MME/MHE), and others
- Power9: S914 (9009-41A/41G), S922 (9009-22A/22G), S924 (9009-42A), E950/E980, and related models
- Power10: S1012/S1014/S1022/S1022s/S1024 (scale-out), E1080 (enterprise), and other Power10 models with backward-compatible PCIe Gen3 slots
- Operating Systems: AIX 7.1+ / 7.2+ / 7.3+, IBM i 7.1+ / 7.2+ / 7.3+ / 7.4+ / 7.5+, Linux (RHEL/SUSE/Ubuntu), VIOS
- Attachment: PCIe Gen3 x16 slot on host server; connects to PCIe3 expansion drawers via ECC8 AOC pair or compatible cables
- Expansion Drawers: PCIe3 I/O Expansion Drawers (#ELMX, #ELMY, #ELMZ, #ELC1, #ELC2, and older PCIe3 drawers)
- Limitations: Requires compatible PCIe Gen3 x16 host slot and expansion drawer; optical AOC recommended for 10 m reach (copper limited to short distances); performance limited in Gen2 slots; not for direct SAS drive attachment (use SAS-specific adapters)
Verify exact slot requirements, cable part numbers, firmware levels, and OS patch levels via IBM Sales Manual or resources for your specific Power Systems model.
Warranty
This product comes with a 60-day warranty covering parts and functionality.
