What is the host interface for the HPE 10Gb 2-port SFP+ adapter 779800-B21?

The host interface for this adapter is PCI Express 3.0 x8. It belongs to the category of PCI Express 3.0 x8 dual-port 10GbE SFP+ network adapters. This requires a server with an available PCIe 3.0 x8 slot or compatible mechanical slot that can support the adapter electrically.

What network speed does the HPE 779800-B21 support?

The adapter supports 10Gb Ethernet connectivity. It is specifically identified as a 10Gb 2-port SFP+ PCIe 3.0 x8 Network Adapter, indicating that each SFP+ port is designed for 10Gb operation. This makes it suitable for environments where 10GbE is required for server network links.

How many network connections can a single HPE 779800-B21 provide?

A single HPE 779800-B21 provides two network connections. The model is described as a 10Gb 2-port SFP+ PCIe 3.0 x8 Network Adapter, which means it includes two SFP+ ports. These two ports can be used for separate networks, link aggregation, or redundancy, depending on system configuration.

What is the product identifier for this HPE 10Gb SFP+ network adapter?

The product identifier is 779800-B21. It is associated with the HPE 10Gb 2-port SFP+ PCIe 3.0 x8 Network Adapter. Using this SKU helps ensure the correct adapter is specified in bills of materials, purchase orders, and deployment documentation in larger environments.

779800-B21 - HPE 779800-B21 10Gb 2-port SFP+ PCIe 3.0 x8 adapter

Name: HPE 779800-B21 10Gb 2-port SFP+ PCIe 3.0 x8 adapter
Brand: HP
SKU: 779800-B21

779800-B21 - HPE 779800-B21 10Gb 2-port SFP+ PCIe 3.0 x8 adapter | US IT Hardware

Product overview

The HPE 10Gb 2-port SFP+ PCIe 3.0 x8 Network Adapter 779800-B21 is designed as a dual-port 10GbE SFP+ solution for data center and enterprise networking needs. It integrates two 10Gb SFP+ network ports, allowing administrators to deploy high-speed network links or redundant connections in server environments. The adapter uses a PCI Express 3.0 x8 interface, providing a suitable bus connection for modern server platforms that require higher bandwidth. As a network adapter with dual 10Gb SFP+ connectivity, it supports fiber-based or direct-attach copper SFP+ modules, depending on system requirements and transceiver selection. This design provides flexibility for different network topologies and cabling plants where 10GbE SFP+ is standardized. With its dual-port configuration and PCIe 3.0 x8 interface, the HPE 779800-B21 helps IT teams standardize on 10Gb SFP+ connectivity across servers in managed environments.

Dual 10Gb SFP+ network ports on a single adapter
PCI Express 3.0 x8 host interface
HPE branded 10Gb 2-port SFP+ adapter
SKU 779800-B21 for precise identification
Supports 10GbE connectivity via SFP+
Designed as a PCIe network adapter

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	779800-B21
Brand	HP
Condition	New
Model	779800-B21
Series	HPE 530SFP+ Ethernet Adapter family
Technology	Dual-port 10Gb Ethernet adapter based on QLogic/Cavium 57810S single-chip solution
Card Height	Low profile
Form Factor	Plug-in card
FCoE Support	Fibre Channel over Ethernet (FCoE) protocol support
Flow Control	IEEE 802.3x flow control
Intended Use	Designed for HPE ProLiant rack, tower and blade servers for high performance computing, server virtualization and network-intensive applications

Best for

10Gb SFP+ servers
Suitable for servers that require 10Gb connectivity using SFP+ interfaces, leveraging the HPE 10Gb 2-port SFP+ design for standardized 10GbE links.
Dual-port 10GbE networking
Useful for deployments needing two 10Gb network connections per adapter, taking advantage of the 2-port 10Gb SFP+ configuration for link redundancy or network separation.
PCIe 3.0 x8 expansion slots
Intended for systems with available PCI Express 3.0 x8 slots, ensuring the network adapter can be installed and operated using its specified bus interface.
SFP+ based cabling plants
Fits environments standardized on SFP+ networking, aligning with the 10Gb SFP+ ports for use with compatible SFP+ modules and cabling infrastructure.
Data center server networking
Appropriate for data center servers that need 10GbE connectivity through dual SFP+ ports using a PCIe 3.0 x8 network adapter form factor.

Frequently asked questions

What type of network ports does the HPE 779800-B21 adapter provide?

Details

Shipping, warranty & returns

Customer reviews

No reviews yet — be the first to review this part.

Product Line	HPE Ethernet 10Gb SFP+ Adapters

Product Type	Network adapter

VLAN Support	IEEE 802.1Q VLAN tagging and VLAN trunking

Bus Type Detail	PCI Express 2.0 (Gen 2) electrical interface

Data Link Protocols	10 Gigabit Ethernet and 1 Gigabit Ethernet

Full Duplex Support	Full duplex only

Offload Technologies	TCP/IP stateless offloads including Large Send Offload, Large Receive Offload, checksum offload, Receive Side Scaling

Time Synchronization	IEEE 1588 Precision Time Protocol (PTP) support

Priority Flow Control	IEEE 802.1Qbb Priority-based Flow Control

iSCSI Offload Support	iSCSI boot and iSCSI acceleration support

Cabling Type Supported	10GbE SFP+ direct attach copper (DAC) and fiber optic cables

Connectivity Technology	Wired 10 Gigabit Ethernet

Virtualization Features	SR-IOV and VMware NetQueue support

Auto-Negotiation Support	Operates at 1 Gbps or 10 Gbps with auto-negotiation on both ports

Supported Operating Systems	Microsoft Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, VMware vSphere releases as listed for 530SFP+ adapters

Data Center Bridging Support	Data Center Bridging features including ETS and PFC (802.1Qaz, 802.1Qbb)

SFP+ Transceiver Compatibility	Designed to be used with HPE 10GbE SFP+ transceivers

Performance

Data Transfer Rate	10 Gbps
Maximum Throughput	Near line-rate 10GbE performance on both ports
Theoretical Bandwidth Per Port	20 Gb/s bi-directional per port
Aggregate Theoretical Bandwidth	40 Gb/s bi-directional per adapter

Maximum Power Consumption	9 W maximum at full load
Typical Power Consumption	Approximately 7–8 W typical under normal operation

Networking Ports & Interfaces

Ports	2 x SFP+
Interface	PCI Express 3.0 x8
Port Type	SFP+
Bus Interface	PCI Express 3.0 x8
LED Indicators	Per-port link and activity status LEDs
Number of Ports	2 ports
Network Interface	10 Gigabit Ethernet
Network Processor	Cavium QLogic 57810S controller
Supported Ethernet Standards	IEEE 802.3, 802.3ae, 802.3x, 802.3ad, 802.1Qaz, 802.1Qau, 802.1Qbb, 802.1ax
Host Interface Signaling Rate	PCIe 2.0 x8 providing up to 40 Gb/s aggregate bi-directional bandwidth to host

HPE 779800-B21 10Gb 2-port SFP+ PCIe 3.0 x8 adapter