Specifications for HPE CX455A Network Adapter
The part identifiers (CX455A, SN: IL270600PK, SKU#: 825110-B21) refer to an HPE-branded Mellanox ConnectX-4 100Gb/s network adapter, specifically the HPE InfiniBand EDR/Ethernet 100Gb 1-port 840QSFP28 Adapter (HPE Spare #: 828107-001). This is a high-performance PCIe card designed for enterprise servers, supporting both InfiniBand EDR (Enhanced Data Rate) and Ethernet protocols for low-latency, high-bandwidth networking in data centers, HPC (High-Performance Computing), and cloud environments. The serial number (IL270600PK) is unique to this unit for tracking and warranty purposes.
Here’s a breakdown of the key specifications based on HPE’s product data and compatible listings:
Specification Details
Manufacturer HPE (OEM: Mellanox/NVIDIA)
Part Number CX455A (Mellanox model); 825110-B21 (HPE SKU/Option Part #); 828107-001 (HPE Spare Part #); 825315-001 (Assembly/Board #)
Capacity/Speed 100 Gb/s (single port)
Interface Type InfiniBand EDR (100 Gb/s) or Ethernet (100GbE); dual-mode configurable via firmware
Connector 1x QSFP28 (Quad Small Form-factor Pluggable 28) port; supports DAC cables, AOC, and transceivers
Form Factor PCIe 3.0 x16 (low-profile or full-height bracket; configurable)
Power Consumption ~15-20W (typical under load)
Features RDMA over Converged Ethernet (RoCE), iWARP, NVMe over Fabrics (NVMe-oF), hardware offloads for TCP/IP, VLAN tagging, Jumbo Frames; ECC memory on board for error correction
Chipset Mellanox ConnectX-4 MT27700 (28nm MTN289080-MTF)
Compatibility HPE ProLiant servers including DL360/380 Gen9 & Gen10, DL560/580 Gen10, Apollo systems; VMware 8/Server 2022 certified; PCIe 3.0/2.0 compatible
Dimensions Standard PCIe card: ~10.5” x 2.7” (full-height); low-profile option available (6.6” x 2.7”)
Operating Temperature 0°C to 55°C (32°F to 131°F)
Use Case High-speed storage networking, clustering, virtualization; ideal for AI/ML workloads, big data analytics
Key Notes:
* Performance: Delivers up to 100 Gbps offerirectional throughput with sub-1µs latency in InfiniBand mode. Ethernet mode supports 100GbE for seamless integration with existing networks. Firmware updates (e.g., to 2020 versions) can switch between modes easily.
* Compatibility: Primarily for HPE ecosystems but works in non-HPE PCIe x16 slots. Ensure BIOS/firmware support for Mellanox drivers (available via HPE or NVIDIA sites). Not compatible with Gen11+ servers without adapters.
