Home/Network & Accessories/Network Adapters/851226-B21 - HP Single-Port 100Gb/s Omni-Path Arch...
851226-B21 - HP Single-Port 100Gb/s Omni-Path Architecture 860Z PCI Express 3.0 x16 FIO Network Adapter

Safe checkout

Secure payments

Fast dispatch

1–2 day handling

Free shipping

U.S. ground

Warranty & RMA

Support after delivery

851226-B21 - HP Single-Port 100Gb/s Omni-Path Architecture 860Z PCI Express 3.0 x16 FIO Network Adapter

SKU 851226-B21
Brand HP
  • Type: Optical Passive Adapter (OPA)
  • Speed: 100Gbps
  • Port Configuration: 1-Port (1P)
  • Interface: Mezzanine
  • Designed for HP ProLiant Servers
  • High-speed interconnectivity
  • Low latency
  • Passive cooling design
In Stock
$132.68

Was $155.74 · You save $23.06

Key specifications

See full specs ↓
Manufacturer
HP
Part Number
851226-B21
Adapter Type
Optical Passive Adapter (OPA)
Speed
100Gbps
Ports
1
Form Factor
Mezzanine

Product details

The HP 851226-B21 is an Optical Passive Adapter (OPA) Mezzanine card with a single port (1P) operating at 100Gbps. It is designed for high-performance networking in HP server environments.

Technical Information

ManufacturerHP
Part Number851226-B21
Adapter TypeOptical Passive Adapter (OPA)
Speed100Gbps

Additional Specifications

Ports1
Form FactorMezzanine
Connector TypeQSFP28 (typically)
CompatibilitySpecific HP Server models

Description

The HP 851226-B21 is a specialized network adapter designed for high-density, high-performance computing environments. As an Optical Passive Adapter (OPA) Mezzanine card, it leverages optical technology to achieve extremely high data transfer rates of 100 Gigabits per second (Gbps). The 'passive' nature suggests it relies on the server's chassis for cooling and power, simplifying its design and potentially reducing power consumption. This adapter features a single port (1P), typically utilizing a QSFP28 connector, which is the standard for 100Gbps optical transceivers. Its mezzanine form factor allows it to be integrated directly onto the server's motherboard or a dedicated mezzanine slot, providing a compact and efficient solution for network connectivity. It is engineered to meet the demanding bandwidth requirements of modern data centers, high-performance computing (HPC) clusters, and large-scale enterprise networks. The primary purpose of the 851226-B21 is to facilitate ultra-fast interconnectivity between servers or between servers and high-speed network fabrics. Its low latency and high throughput make it ideal for applications such as large-scale data analysis, distributed computing, storage networking, and AI/ML workloads where rapid data movement is critical. Compatibility is typically limited to specific HP server generations and models that support this type of mezzanine adapter.

Condition: Refurbished

Free U.S. ground shipping

Typically 1–2 days handling, 3–7 days in transit.

Purchase orders accepted

Government, enterprise, data center and small business.

Warranty & RMA support

See warranty and returns.

Buying 10+ units?

Get volume pricing and availability for 851226-B21.

Questions about this part?

Compatibility, condition, lead times — ask a specialist.

(888) 988-8093

Related products

Loading related inventory…