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HPE 100Gbps single-port PCIe 3.0 x16 QSFP28 network adapter card

HPE

HPE 874253-B21 100Gbps Single Port PCIe 3.0 x16 842QSFP28 Adapter

SKU CH-NDMQ-GS0KN

A 100 Gbps single-port Ethernet adapter using a PCIe 3.0 x16 slot and an 842QSFP28 interface

  • Speed100Gbps
  • InterfacePCI Express
  • 100Gbps throughput for high-bandwidth server workloads
  • Single 842QSFP28 port simplifies high-speed cabling
  • PCIe 3.0 x16 interface delivers full 100Gbps line rate
  • Designed for HPE ProLiant server compatibility
  • Part 874253-B21 for precise ordering and support

HPE 100Gbps Single Port Adapter

The HPE 874253-B21 is a single port network adapter built for servers that need 100Gbps Ethernet connectivity. It fits a PCIe 3.0 x16 slot and uses an 842QSFP28 interface for copper cabling. This card targets ProLiant customers who require high throughput on a single link.

PCIe 3.0 x16 Bandwidth Limit

The adapter operates on a PCI Express 3.0 x16 interface, which sets the practical ceiling for host to card data movement. While the port signals at 100Gbps, sustained throughput cannot exceed the electrical bandwidth of the x16 generation 3.0 link. Copper QSFP28 reach and signal integrity also bound real world distance and error rate.

Low Profile Installation Notes

The card installs into any standard PCIe 3.0 x16 slot with no additional power cables required. Common issues include seating the QSFP28 transceiver firmly until the latch clicks and verifying the server BIOS enables the slot at x16 width. Driver support must match the operating system kernel in use.

Highlights

  • 100Gbps throughput for high-bandwidth server workloads
  • Single 842QSFP28 port simplifies high-speed cabling
  • PCIe 3.0 x16 interface delivers full 100Gbps line rate
  • Designed for HPE ProLiant server compatibility
  • Part 874253-B21 for precise ordering and support

Specifications

BrandHPE
Part Number874253-B21
Speed100Gbps
InterfacePCI Express

Questions about this item

Does the 874253-B21 come in other port counts or speeds?

This model is a single-port 100Gbps adapter. HPE offers other adapters with different port counts or speeds under separate part numbers.

What real-world throughput can I expect from the 100Gbps rating?

The 100Gbps figure is the Ethernet line rate. Actual payload throughput will be slightly lower due to protocol overhead and system configuration.

What does the PCIe 3.0 x16 interface mean for bandwidth limits?

The adapter uses a PCIe 3.0 x16 slot. The slot provides the electrical connection for the 100Gbps Ethernet port.

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