SKU: 57395840931

HPE® 817753-B21 alternative NVIDIA ConnectX-4 based NIC PCIe 3.0 x8 Dual Port 25GbE Open SFP28

Sale price$159.30 Regular price$177.00
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Ships within 48 hours · Estimated delivery Sep 28 - Oct 3

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Description

HPE® 817753-B21 alternative NVIDIA ConnectX-4 based NIC PCIe 3.0 x8 Dual Port 25GbE Open SFP28HPE 817753 B21 alternative NVIDIA ConnectX 4 NIC PCIe 3. 0 x8 Dual Port 25GbE SFP28 HPE 817753 B21 PCIe x8 NVIDIA Mellanox ConnectX 4 Dual Port 25G SFP28 adapter with 25Gb s Ethernet connectivity addresses virtualized infrastructure challenges for todays demanding markets and applications. Providing true hardware based I O isolation with unmatched scalability and efficiency, ConnectX 4 provides a cost effective and flexible Ethernet adapter solution

HPE® 817753-B21 alternative NVIDIA ConnectX-4 NIC PCIe 3.0 x8 Dual Port 25GbE SFP28

HPE® 817753-B21 PCIe x8 NVIDIA Mellanox ConnectX-4 Dual-Port 25G SFP28 adapter with 25Gb/s Ethernet connectivity addresses virtualized infrastructure challenges for today’s demanding markets and applications. Providing true hardware based I/O isolation with unmatched scalability and efficiency, ConnectX-4 provides a cost-effective and flexible Ethernet adapter solution for Web2.0, cloud, data analytics, database, and storage platforms. It provides a combination of 25G bandwidth, sub-microsecond latency and a 75 million packets per second message rate. It includes native hardware support for RDMA over Converged Ethernet (RoCE), Ethernet stateless offload engines, Overlay Networks, GPUDirect technology and Mellanox Multi-Host Technology.

System Requirements

  • Windows, RHEL/CentOS, FreeBSD, VMware, OpenFabrics Enterprise Distribution (OFED), OpenFabrics Windows Distribution (WinOF)
  • An available PCI Express x8/ x16 slot

Specification

  • Compliant with PCI Express Specification Revision 3.0, 2.0 and 1.1
  • 2.5, 5.0, or 8.0GT/s link rate x8
  • Auto-negotiates to x8, x4, x2, or x1
  • Support for MSI/MSI-X mechanisms
  • Supports dual-Port 25G, 10G, or 1G SFP+
  • IEEE802.3by, 25G supporting all FEC modes
  • IEEE802.3az Energy Efficient Ethernet 
  • IEEE802.3ap based auto-negotiation and KR start-up
  • Support Standards IEEE802.3ad, IEEE802.1ax, IEEE802.1Q, IEEE802.1P, IEEE802.1Qaz,  IEEE802.1Qbb, IEEE802.1Qbg, IEEE1588V2
  • Jumbo frame support 9.6KB
  • Independent NC-SI SMBus interface
  • Independent stand-by and wake-on-Lan signals
  • Hardware based reliable transport
  • Collective operation offloads
  • PeerDirect RDMA (aka GPUDirect communication acceleration)
  • 64/66 encoding
  • Extended reliable connected transport
  • Dynamically connected transport
  • RDMA over Converged Ethernet (RoCE)
  • TCP/UDP/IP stateless offload
  • LSO.LRO. checksum offload
  • Hardware offload of encapsulation and decapsulation of NVGRE and VXLAN  overlay networks
  • SR-IOV, Multi-function, Enhanced QoS, VMware support
  • SR-IOV up to 256 virtual functions
  • SR-IOV up to 8 physical functions per port
  • Guaranteed QoS for VMs 
  • OpenMPI, IBM PE, OSU MPI, Intel MPI protocol support
  • NC-SI over MCTP over SMBus and NC-SI over MCTP over PCIe-Baseboard  Management Controller interface
  • Remote boot over Ethernet, iSCSI, PXE, and UEFI
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 57395840931

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Reviewed in the United States on April 21, 2026
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Zheni N Goodrich
Lexington, US
★★★★★ 4
Good support but a little stiff
Color: Black, Size: 36DDD
The fit is great. I purchased 36 DDD. Just a little stiff and hurts after wearing for a long time.
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Reviewed in the United States on April 20, 2026
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Mama G
Los Angeles, US
★★★★★ 5
Comfortable fit, looks great
Color: Light Beige, Size: 38C, Color: Light Beige, Size: 38C
Perfect fit, fabulous summer bra, lightly lined. When I opened the bra and saw the wrinkles looking like a over washed bra, I had my concerns. My girls filled the cups and the wrinkles on the cups went smooth. The bra is comfortable from the box, no wearing in needed, as it should be.
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Reviewed in the United States on May 20, 2026
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M. Winters
Los Angeles, US
★★★★★ 3
Uncomfortable after several wears
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Reviewed in the United States on February 19, 2026

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