HPE 876449-B21 Synergy 4820C 10/20/25Gb Adapter

HPE 876449-B21 Synergy 4820C 10/20/25Gb Converged Network Adapter

The HPE 876449-B21 Synergy 4820C 10/20/25Gb Converged Network Adapter provides high-speed Ethernet and storage networking connectivity for compatible HPE Synergy compute modules. With two network ports supporting 10Gb, 20Gb or 25Gb operation, it helps organisations maintain flexible connectivity across their Synergy infrastructure.

Built around the Marvell QL45604 network processor, the 4820C supports converged networking technologies including Ethernet, Fibre Channel over Ethernet (FCoE) and iSCSI. It is designed for the HPE Synergy architecture rather than installation as a conventional stand-up PCIe card in a rack server.

HPE 876449-B21 Technical Specifications

Bandwidth note: The maximum supported Ethernet rate is 25Gbps per port. HPE’s published 50Gbps per-port bidirectional figure combines simultaneous transmit and receive capacity; it does not indicate a 50Gbps connection in one direction.

Key Features and Benefits

• Flexible network speeds: Supports 10Gb, 20Gb and 25Gb operation with qualified Synergy interconnects.
• Two network ports: Provides independent connections for supported network and storage configurations.
• Converged networking: Enables Ethernet and supported storage protocols to share the Synergy networking infrastructure.
• SR-IOV: Supports virtualised networking in qualified server and operating system environments.
• RoCEv2: Enables supported low-latency RDMA workloads.
• Synergy integration: Works with supported HPE Synergy compute modules and fabric interconnects.

HPE Synergy Compatibility

The 876449-B21 is intended for HPE Synergy systems. HPE’s networking adapter QuickSpecs list compatibility with selected Synergy compute modules, including the HPE Synergy 660 Gen10 Compute Module.

Support for additional compute modules and interconnect combinations depends on the relevant platform generation and HPE support documentation.

Before purchasing, verify the exact compute module, mezzanine slot, interconnect module and installed firmware. Also check the operating system support matrix and HPE OneView configuration.

The 4820C should not be purchased as a replacement for a standard PCIe network adapter such as the HPE 562T or 562SFP+. Those products use different installation architectures.

Converged Ethernet and Storage Networking

A major advantage of the 4820C is its ability to support different network traffic types through a converged adapter.

In qualified configurations, the adapter can carry standard Ethernet traffic alongside FCoE or iSCSI storage traffic. This may help reduce the number of separate networking components required in a Synergy deployment.

However, support for a particular storage protocol depends on the interconnect, operating system, driver, firmware and network configuration.

Important: FCoE support does not make the 4820C a native Fibre Channel HBA with a physical FC optical port. Storage connectivity must be designed around the supported Synergy fabric.

Virtualisation and RDMA Features

The HPE Synergy 4820C supports SR-IOV, allowing compatible virtualisation platforms to expose network resources to virtual machines with reduced software processing overhead.

HPE also documents RoCEv2 support, which can benefit suitable low-latency applications and workloads using RDMA.

DPDK and network offload capabilities are available for supported software environments. These features require appropriate operating system, driver and network configuration.

Compatibility with Virtual Connect SE 100Gb F32

HPE documents the 4820C within the Synergy networking ecosystem, which includes the Virtual Connect SE 100Gb F32 Module.

The Virtual Connect module provides fabric connectivity and management, while the 4820C provides network connectivity at the compute-module level.

They perform complementary roles and should not be treated as interchangeable hardware.

Before combining these components, verify the supported firmware, interconnect configuration and required cabling in the relevant HPE QuickSpecs.

Installation and Replacement Considerations

Installation should follow the maintenance instructions for the relevant HPE Synergy compute module.

Before replacing an existing adapter, record the current network configuration, firmware version and adapter identification. Confirm that the replacement part number is 876449-B21.

After installation, verify that the adapter is detected by the system and that its network connections are correctly mapped through the Synergy interconnect infrastructure.

HPE’s standard option kit documentation lists an installation card and product warranty statement. Supplied contents may differ for separately packaged or Refurbished hardware.

New and Refurbished HPE 876449-B21

New: New or unused 4820C adapters may be suitable for expanding or maintaining supported Synergy infrastructure. Confirm packaging, availability, warranty and applicable firmware requirements before ordering.

Refurbished: A Refurbished adapter can provide a cost-effective option for replacing an existing 4820C. Buyers should request confirmation of hardware testing, physical condition and successful detection in a compatible system.

For both conditions, confirm the supplied part number, warranty coverage and UK delivery arrangements.

Related HPE Networking and Server Products

Explore other HPE infrastructure components available through Euroland IT Store:

• HPE 867796-B21 Virtual Connect SE 100Gb F32 Module – A Synergy fabric interconnect used in qualified configurations.
• HPE 817738-B21 Ethernet 10Gb 2-Port 562T Adapter – A conventional RJ-45 server network adapter.
• HPE 840137-001 Ethernet 562T Adapter – The replacement spare for the 562T adapter family.
• HPE 784304-001 Dual-Port 10GbE SFP+ Adapter – A separate SFP+ server networking option.
• HPE J9995A Aruba 5400R Smart Rate Module – An Ethernet switch expansion module for a different platform.

Related products are provided for browsing and are not necessarily direct replacements or compatible accessories for 876449-B21.

Buy HPE 876449-B21 Synergy Adapter in the UK

Euroland IT Store helps UK businesses source HPE Synergy networking adapters, interconnect modules and enterprise IT hardware.

Contact our team to confirm HPE 876449-B21 availability, New or Refurbished condition, warranty, pricing and UK delivery.

For compatibility assistance, provide your Synergy compute module model, existing adapter part number, interconnect module and firmware details.

Request a Quote for HPE 876449-B21

Frequently Asked Questions

1. What is HPE 876449-B21?

HPE 876449-B21 is the Synergy 4820C 10/20/25Gb Converged Network Adapter, designed for Ethernet and supported storage networking in compatible HPE Synergy compute modules.

2. How many ports does the HPE Synergy 4820C have?

It has two network ports, each supporting 10Gb, 20Gb or 25Gb operation with qualified Synergy infrastructure.

3. Does HPE 876449-B21 support FCoE and iSCSI?

Yes. HPE documents FCoE and iSCSI capabilities for the 4820C, subject to compatible software, firmware and interconnect configurations.

4. Can HPE 876449-B21 be installed in a standard ProLiant PCIe slot?

No. It is a Synergy mezzanine adapter designed for compatible HPE Synergy compute modules, not a conventional stand-up PCIe network card.

5. Can I purchase HPE 876449-B21 in New or Refurbished condition?

New and Refurbished options may be available through Euroland IT Store. Contact the team to confirm availability, testing, warranty and UK delivery.