HPE 652503-B21 10Gb 2-port 530SFP+ server accessory

Dual-Port 10Gb Ethernet Adapter

The HPE 652503-B21 is a PCIe x8 server accessory that provides two SFP+ ports for 10Gb Ethernet connectivity. It uses a Broadcom NetXtreme II single-chip design to deliver full line-rate performance across both ports while reducing power draw. The adapter targets ProLiant Gen8 rack and tower servers running virtualisation, high-performance computing or consolidation workloads. Aggregate full-duplex throughput reaches 40Gb/s for demanding network traffic.

Upgrade From Single-Port Or 1Gb Links

This card replaces older single-port 10Gb adapters or dual-port 1Gb NICs when a server needs twice the 10Gb port density without consuming extra PCIe slots. The jump is worth it when virtual machine density or storage replication saturates existing 1Gb uplinks or when a single 10Gb port creates a failover bottleneck. Buyers who need more than two 10Gb ports or require 25Gb speeds should consider higher-density alternatives.

Straightforward PCIe Installation

Installation consists of seating the card into an available PCIe x8 slot and inserting compatible SFP+ transceivers or direct-attach cables. The low-profile bracket fits Gen8 rack and tower chassis without modification. Common issues include using unsupported third-party optics that the firmware rejects and neglecting to enable SR-IOV in the BIOS for virtualisation workloads. Driver support is mature across major hypervisors and operating systems.