The HPE 764284-B21 is an HPE OEM ConnectX-3 VPI dual-port QSFP network adapter in standard PCIe full-height form factor, marketed as the HPE 544+QSFP adapter. The “+” designation indicates a full-height PCIe card with bracket, distinguishing it from the FLR (FlexibleLOM) mezzanine version. Supports InfiniBand FDR at 56Gb/s and 40GbE Ethernet (VPI). HP part number for HPE ProLiant Gen9 servers. This is original HPE-branded Mellanox hardware sold by T.E.S IT-SOLUTIONS (tes-itsolutions.com). Condition: refurbished.
Engineering
The HPE 764284-B21 (544+QSFP) uses the Mellanox ConnectX-3 VPI controller with two QSFP ports. Standard PCIe 3.0 x8 host interface with full-height bracket. InfiniBand FDR operates at 56Gb/s per port (4×14Gb/s lanes). In 40GbE Ethernet mode, each port operates at 40Gb/s. VPI architecture allows each port to be independently configured for InfiniBand or Ethernet mode via firmware. The HP 649281-B21 and HPE 764284-B21 are both PCIe bracket versions of ConnectX-3 VPI dual-port QSFP adapters for HP/HPE ProLiant servers, with the 764284-B21 being the newer ProLiant Gen9 variant.
Deployment
Used in HPE ProLiant Gen9 servers (DL360 Gen9, DL380 Gen9, DL560 Gen9, DL580 Gen9) requiring FDR InfiniBand or 40GbE Ethernet connectivity in a standard PCIe expansion slot. Common in HPE ProLiant deployments for HPC cluster node connectivity, 40GbE storage networking (NVMe-oF, iSCSI), and mixed InfiniBand + Ethernet VPI environments. The 544+ designation is HPE’s Gen9 branding; functionally equivalent to the 649281-B21 (Gen8 branding) at the ConnectX-3 VPI hardware level.
Specifications
HPE Part Number: 764284-B21
HPE Model Name: 544+QSFP
OEM: HPE (Hewlett Packard Enterprise)
Underlying Adapter: Mellanox ConnectX-3 VPI
Data Rate: 56Gb/s IB FDR per port / 40GbE per port
Port Count: 2
Connector: QSFP (both ports)
Host Interface: PCIe 3.0 x8
Form Factor: Full-height PCIe with bracket
Protocol: VPI — InfiniBand FDR + 40GbE Ethernet
Condition: Refurbished
Compatibility
Compatible with HPE ProLiant Gen9 servers in standard PCIe x8 or x16 slots (x8 electrical). Compatible with FDR InfiniBand QSFP switches and cables, and 40GbE QSFP Ethernet switches. Compatible with QSFP DAC cables and active fiber cables. NOT compatible with QSFP28 (100GbE/EDR) ports. NOT a FlexibleLOM card — the HP 649282-B21 is the FlexibleLOM (FLR) equivalent. Some HPE environments may require HPE firmware bundle for optimal BIOS/firmware integration. Verify vendor lock-in firmware policy before deployment in non-HPE servers. The functionally equivalent non-HPE OEM card is the NVIDIA MCX354A-FCBT.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a European reseller specializing in original and refurbished HPE OEM Mellanox adapters and NVIDIA Mellanox networking hardware, operating since 2011. Each HPE 764284-B21 is tested for PCIe link negotiation and port activity before shipment. Global shipping with 1–3 business day handling. Technical consultation available for HPE ProLiant NIC compatibility.