• HPE 874253-B21 100GbE QSFP28 PCIe 3.0 x16 green black network card with heatsinks
1 1

HPE

HPE 874253-B21 | 100GbE 1x QSFP28 PCIe 3.0 x16 adapter (ConnectX-5 EN), SR-IOV, RoCEv2, PTP

874253-B21

Stock Status: Enquire

Request Quote
Sale Sold out
Shipping calculated at checkout.
20-min response

Need a quote or bulk pricing? Answered within 20 minutes, Sydney business hours.

Description

Single-port 100GbE server adapter based on ConnectX-5 EN silicon, providing a QSFP28 interface for high-performance fabrics and modern virtualization stacks. Supports advanced offloads such as SR-IOV and RoCEv2 for low latency, with a PCIe 3.0 x16 host interface for full 100G bandwidth. Compatible with QSFP28 optics and DAC/AOC for flexible deployment.

Features

- Line-rate 100GbE performance on a single QSFP28 port
- Low-latency RDMA (RoCEv2) for HPC, storage, and AI workloads
- Rich virtualization and overlay offloads reduce CPU overhead
- Flexible media: QSFP28 optics or DAC/AOC to suit any reach
- Hardware timestamping for precise time-sensitive applications

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

View full details

specs-tabs

Technical Specifications

FAQs

Technical Specifications

- Port configuration: 1x 100GbE QSFP28
- Host interface: PCIe 3.0 x16
- ASIC: ConnectX-5 EN class
- Virtualization: SR-IOV support
- RDMA: RoCEv2 support for low-latency networking
- Timing: IEEE 1588 PTP hardware timestamping
- Overlay offloads: VXLAN/NVGRE/GRE
- Jumbo frames and advanced checksum/TSO/LRO offloads
- QSFP28 media support: 100GBASE-SR4 (850 nm MPO-12, up to ~100 m OM4), 100GBASE-LR4 (1310 nm LC, up to 10 km), 100G CWDM4 (LC, up to 2 km), QSFP28 DAC/AOC
- Cable/optic connector: QSFP28 cage (media dependent MPO-12 or LC)

FAQs

Q: What slot do I need?
A: A PCIe 3.0 x16 (or better) slot is required to sustain full 100GbE throughput.

Q: Which transceivers or cables are compatible?
A: QSFP28 100G optics (SR4, LR4, CWDM4) and QSFP28 DAC/AOC are supported; match media to your link distance and switch capability.

Q: Does it support SR-IOV and RDMA?
A: Yes, SR-IOV and RoCEv2 are supported for high-performance virtualization and low latency.

Q: Is this adapter low profile or full height?
A: Bracket type may vary by option; verify bracket height for your server chassis.

Q: Can it downshift to 40GbE or 25GbE?
A: Speed negotiation depends on optics/cables and switch capabilities; 100GbE operation is primary.

Related Products

View all Server Accessories & Modules

Recently Viewed

  • Request a Quote

    Looking for competitive pricing? Submit a request, and our team will provide a tailored quote that fits your needs.

  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Call us Now  

  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Contact us